Natural sources of radiation

Natural Background Sources NRC

Natural Background Sources. Natural background radiation comes from the following three sources: Cosmic Radiation; Terrestrial Radiation; Internal Radiation; Cosmic Radiation. The sun and stars send a constant stream of cosmic radiation to Earth, much like a steady drizzle of rain There are three groupings of naturally occurring radiation, mostly based on where the. The composition of the earth's crust is a major source of natural radiation. The main contributors are natural deposits of uranium, potassium and thorium which, in the process of natural decay, release small amounts of ionizing radiation. Uranium and thorium are ubiquitous, meaning they are found essentially everywhere Natural radiation is radiation whose source can be traced to be of either terrestrial, solar or astronomical nature and as such is typically found in our everyday life. This chapter presents an account of only a handful of the most common natural radiation sources: the cosmic background radiation, the cosmic and solar radiation and the natural.

The majority of background radiation occurs naturally and a small fraction comes from man-made elements. sources: The radioactive gases radon and thoron, which are created when other naturally occurring elements undergo radioactive... Space (cosmic radiation). Naturally occurring radioactive. In flight there are two principal sources of natural radiation to consider: Galactic Cosmic Rays which are always present, and Solar Proton Events, sometimes called Solar Cosmic Ray (SCR) events, which occur sporadically. The dose rate from cosmic radiation varies in different parts of the world and it depends strongly on the geomagnetic field, altitude, and solar cycle

The Sun. Cosmic radiation is one of the three major sources of naturally occurring radiation and comes from the sun and outer space, consisting of positively charged particles, as well as gamma radiation. The sun, powered by a continuous nuclear reaction, gives off a great deal of radiation. Luckily, most of the energy given off by the sun is. It's no surprise that sources of drinking water in the U.S. contain low levels of radiation. It comes from rivers and lakes (if you live in an urban area) or wells (if you live in a rural area).. Many radioactive elements such as radium 224, uranium 235, uranium 238, thorium 232, radon 222, potassium 40 and carbon 14 occur in rocks, soil and water

In addition to terrestrial and cosmic sources of natural radioactivity, substances in the human body also produce radiation. The array of radioactive isotopes found in the human body have a terrestrial source, since they have been ingested through food, water, or air. They include carbon-14, potassium-40, uranium, thorium, radium, and some others On average, it is the largest source of natural radiation exposure. People can also face terrestrial radiation in the oil and gas industries, where it is known as Naturally Occurring Radioactive Material (NORM). In the process of mining radon or radium can be accumulated in pipes or contaminate the surfaces and be very harmful for people Internal radiation comes from radioactivematerials that occur naturally in the humanbody. Isotopes of potassium and carbon arethe primary sources of internal radiationexposures

Naturally Occurring Radiatio

  1. Natural Sources of Radiation Exposure - YouTube. Natural Sources of Radiation Exposure. Watch later. Share. Copy link. Info. Shopping. Tap to unmute. If playback doesn't begin shortly, try.
  2. Most background radiation comes from natural sources, including the ground, the air, building materials and food. Radiation is also found in the cosmic rays from space. Some rocks contain..
  3. Terrestrial Radiation (Uranium, Actinium, Thorium decay series) • Radioactive material is found throughout nature in soil, water, and vegetation. • Important radioactive elements include uranium and thorium and their radioactive decay products which have been present since the earth was formed billions of years ago
  4. An important source of natural radiation is radon gas, which seeps continuously from bedrock but can, because of its high density, accumulates at the ground. The fact radon is gas plays a crucial role in spreading of all its daughter nuclei. As radon-222 decays into lead-210, lead-210 can be attached to dust of moisture particles and it can be.

Types and sources of radiation - Canadian Nuclear Safety

  1. A number of sources of natural radiation penetrate our bodies through the food we eat, the air we breathe and the water we drink. Potassium-40 is the main source of internal irradiation (aside from radon decay) found in a variety of everyday foods. The average effective dose from these sources is approximately 0.3 mSv a year
  2. eral processing and uses, such as phosphate fertilizer production and useand fossil fuel combustion, causing enhanced natural radiation exposures. In a few cases, for example, by pavin
  3. Natural and artificial sources of radioactivity. Biosphere is situated in the field of radiation that has existed for millions years. This field consists basically of two sources - extraterrestrial (cosmic) and terrestrial. The components of the natural radioactive background are the natural radioactivity of ground, natural activity of.
  4. By far the largest source of natural radiation exposure comes from varying amounts of uranium and thorium in the soil around the world. The radiation exposure due to cosmic rays is very dependent on altitude, and slightly on latitude: people who travel by air, thereby, increase their exposure to radiation
  5. erals and materials buried in the earth. Most common are potassium-40, uranium-238, and thorium-232, which all have fairly long half-lives. Additionally, there are small quantities of shorter-lived materials, such as radium-226, which is a decay product of U-238, and radon-222.

Figure 1: Natural background radiation in parts of Europe (source: Gonzalez 2011) Radon also occurs in natural gas at up to 37,000 Bq/m 3, but by the time it gets to consumers the radon has largely decayed. However, the solid decay products then contaminate gas processing plants, and this manifestation of NORM is an occupational health issue. Natural radiation comes from many sources including more than 60 naturally-occurring radioactive materials found in soil, water and air. Radon, a naturally-occurring gas, emanates from rock and soil and is the main source of natural radiation. Every day, people inhale and ingest radionuclides from air, food and water We will now consider the physical processes underpinning natural and artificial radiation sources in turn. Natural radiation. Natural radiation can be detected by a sensor as a result of one of two processes. As shown in the illustration above, incident radiation from the sun can be reflected from the Earth's surface

Natural sources of ionizing radiation include radioactive elements that are naturally in our body. For example, a very small fraction of the potassium in our bodies is radioactive. Radon, however, is a natural radioactive gas found in rock formations that can release higher levels of radiation that can pose health risks. It is the second. The largest source of human exposure to natural background radiation is from radon gas in rock, though exposures vary widely depending on local geology Find out about exposures to natural radiation (and, in some cases, artificial radiation sources) in your country and the world: Belgium

Though nuclear plants are basically clean sources of energy, they thus contribute to the worldwide background radiation level There are two basic types of radiation Radiation - Energy traveling in the form of electromagnetic waves, photons, alpha particles (helium nuclei), or beta particles (electrons 2.10.4 Natural background radiation, Radon. Naturally occurring background radiation is the main source of exposure for most people and provides some perspective on radiation exposure from nuclear energy. Much of it comes from primordial radionuclides in the Earth's crust, and materials from it. Potasssium-40, uranium-238, and thorium-232 with. However, natural radioactive sources in the soil, water, and air contribute to our exposure to ionizing radiation, as well as man-made sources resulting from mining and the use of naturally radioactive materials in power generation, nuclear medicine, consumer products, military, and industrial applications

Lima beans are high in radioactive potassium-40 and also radon-226. Expect to get 2 to 5 pCi/kilogram from radon-226 and 4,640 pCi/kilogram from potassium-40. You don't get any benefit from the radon, but the potassium is a nutritious mineral. Lima beans are also a good source of (non-radioactive) iron. 03 Natural sources of background radiation include: cosmic rays - radiation that reaches the Earth from space. rocks and soil - some rocks are radioactive and give off radioactive radon gas. living things - plants absorb radioactive materials from the soil and these pass up the food chain After reading this article you will learn about the natural and man-made sources of environmental radiation. Natural (Background) Environmental Radiation: This includes cosmic rays that reach the surface of the earth from space and terrestrial radiations from radioactive elements present in the earth's crust. ADVERTISEMENTS: Many radioactive elements such as radium 224, uranium 235, uraniu Outside of ordinary background radiation, the most common cause of exposure in the U.S. is from medical sources, Frey says. But as long as there is a good reason for that procedure, the.

Non-ionizing Radiation - HSSE WORLD

Natural Sources of Radiation SpringerLin

Radiation Sources and Doses US EP

Most radiation exposure is from natural sources. These include: radioactivity in rocks and soil of the earth's crust; radon, a radioactive gas given out by many volcanic rocks and uranium ore; and cosmic radiation. The human environment has always been radioactive and accounts for up to 85% of the annual human radiation dose Units of radiation measurement, calculations of radiation dose equivalent, sources of ionizing radiation and its biological effects

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The European Atlas of Natural Radiation (hereafter called Atlas) is a collection of maps displaying the level of radioactivity caused by different, natural sources in Europe. This Atlas is intended to familiarise the public with the radioactive environment, to give a more balanced view of the annual dose that it may receive from natural. Radon is the dominant source of effective dose from natural sources of radiation in the general population. However, most of this dose is delivered to the lung and the contribution from radon to re

Natural radiation in food should not be confused with food irradiation. Food irradiation is a process that uses ionizing radiation to prevent foodborne illness (food poisoning) and food spoilage. Food is passed through a radiation beam-like a large flashlight-to kill bacteria, molds and other pests in food Sources of Radiation. STUDY. PLAY. Name the 2 sources of nuclear radiation. 1. Natural 2. Artificial (man made) Is this artificial or natural radiation. Natural. Is radiation from nuclear weapons testing artificial or natural. Artificial. YOU MIGHT ALSO LIKE... 15 terms. Ch10 sec 3 Nuclear radiation Today. 28 terms A review and analysis of published information combined with the results of recent gamma ray surveys were used to determine the annual effective dose to Canadians from natural sources of radiation. The dose due to external radiation was determined from ground gamma ray surveys carried out in the cit

Natural Background Radiation - Natural Sources of Radiatio

In order to assess the effective dose equivalent from the natural radiation sources to general population in Fujian Province, natural radionuclide concentrations in air, soil, drinking water, foodstuffs, building materials and the external exposure rates from terr One natural source of radiation is from space. Cosmic radiation consists of high-energy charged particles, x-rays and gamma rays produced in space. Charged particles react with the earth's atmosphere to produce secondary radiation which reaches the earth. Cosmic radiation is produced by the stars, including our own sun Radiation is a well-understood process, with natural sources accounting for most of the radiation we all receive each year. Contrary to public perception, nuclear power accidents have caused very few fatalities and the use of nuclear energy does not expose members of the public to significant radiation levels

4 Surprising Sources Of Naturally Occurring Radiation NOR

between natural background and artificial sources of radiation is shown in the pie chart. Natural radiation contributes about 88% of the annual dose to the population and medical procedures most of the remaining 12%. Natural and most artificial radiations are not different in kind or effect. PRotection FRoM Radiation The dose that will accumulate over a given period (say, 50 years) from exposure to a given source of radiation is called the committed dose, or dose commitment. Sources and levels of radiation in the environment Natural sources. From the beginning, life has evolved in the presence of natural background ionizing radiation The radiation dose to the population of Israel due to exposure to natural sources of ionizing radiation was assessed. The main contributor to the dose is radon that accounts for 60% of the exposure to natural sources. The dose due to radon inhalation was assessed by combining the results of a radon Sources . Cosmic microwave background radiation is a natural source of microwaves. The radiation is studied to help scientists understand the Big Bang. Stars, including the Sun, are natural microwave sources. Under the right conditions, atoms and molecules can emit microwaves

9 Everyday Sources of Radiation Health

The European Atlas of Natural Radiation published by the JRC provides reference values for natural sources of radiation across the EU and makes harmonised datasets available to the scientific community and national authorities. The Atlas is a result of the JRC's collaboration with over 60 institutions, including universities, research centres. External exposure is due to cosmic radiation and radiation from terrestrial radionuclides present in soil, rocks and building materials. The first-ever detailed European Atlas of Natural Radiation uses informative texts, stunning photographs and striking maps to answer and explain these and other questions The average radiation dose across the planet for each person is estimated to be 2.4 mSv annually from natural sources, with additional small contributions from nuclear facilities of less than 0.2 μSv per year on average. 89 Small additional contributions have occurred in the past from atmospheric nuclear weapons testing and near nuclear. Natural radiation originates from four main sources: radionuclides in the body, inhalation, external terrestrial radiation and cosmic radiation. This natural background radiation can vary considerably depending on such things as the geological environment, type of living accommodation and elevation above sea level Radiation can be natural or man-made. Natural: The sun emits ultraviolet rays that can cause sunburn. Granite, a common rock used in kitchen counters, is a natural source of radiation. Man-made: Doctors use X-rays and MRIs to see inside patients with broken bones and other problems. A microwave uses a form of radiation to cook food

Irradiation is the process by which an object is exposed to radiation.The exposure can originate from various sources, including natural sources. Most frequently the term refers to ionizing radiation, and to a level of radiation that will serve a specific purpose, rather than radiation exposure to normal levels of background radiation.The term irradiation usually excludes the exposure to non. background radiation The amount of ionising (electromagnetic) radiation to which a person is exposed from natural sources, including terrestrial radiation due to natural radionuclides in the soil (e.g., radon), cosmic radiation and fallout in the environment from anthropogenic sources RADIATION SAFETY AND DOSIMETRY IN UTILIZING OF NATURAL SOURCES OF RADIATION S. M. Kamal Radiation Protection Department, NRC, AEA, Cairo.Egypt, esykamal@vahoo.com Handling, storage or any other operations involving materials containing high radioactivity always cause some excess exposure to the workers. The exposure varies considerably in differen The largest source of natural background radiation for most people is radon. This is an odorless, colorless gas that is formed from the breakdown of radioactive elements in the ground. Radon levels are usually higher inside buildings and homes, especially in levels closer to the ground such as basements There are many sources of naturally occurring radioactive material, such as Uranium and Thorium in soil and rock, and Carbon-14 in the atmosphere. There are also artificially produced radioactive materials, such as Nickel-63 in electron capture detectors, Cs-137, Am-241/Be neutron sources, and many more. Regardless of whether the radioactive material is natural or artificial

There are many sources of EMF radiation in your home. Some are obvious, and some are hidden. And while there's naturally-occurring EMF radiation, the EMF radiation given off by the artificial sources at home is stronger and more damaging than natural sources.. Here's a list of the 10 major sources of EMF radiation that you probably have in your house and what you can do to protect yourself Natural sources account for about 84% of the overall average annual dose. Estimates of the average annual dose from natural and artificial sources are given in the table below. Annual exposure of the UK population from all sources of ionising radiation Source Annual collective dose, man Sv Average annual dose, µSv* Natural: Cosmic 19,400 33 dict.cc | Übersetzungen für 'natural source of radiation' im Englisch-Deutsch-Wörterbuch, mit echten Sprachaufnahmen, Illustrationen, Beugungsformen,.

- use different units to quantify radiation - Gray (Gy) = basic unit of radiation absorbed by tissue - represents the deposition of one joule of energy per kilogram of tissue - SI UNIT Sievert (Sv) = used in setting radiological protection standards - SI UNIT Becquerel (Bq) is Well, I would certainly like to hear more details from Marco. Yeah. That. Humans receive radiation from a number of sources, including their own bodies. Yes, cosmic radiation is does contribute to the dose. Uranium and Thorium in the earth (and in.. Humans are exposed to natural sources of ionizing radiation all the time on earth; this natural radiation is primarily the originates from the cosmos, aptly referred to cosmic radiation, and the presence of radioactive isotopes naturally present in the ground and in the atmosphere. Humans are also exposed to man-made sources of ionizing.

average annual radiation doses as a result of some everyday activities. Sources of Radiation Dose Medical - X-rays and radioactive materials are used to diagnose disease and medical radiation is the largest source of man-made exposure of the public. Gamma rays - Gamma rays are emitted by natural radioactivity in the earth and building materials Radiation & Me. Many uses of radiation help to ensure the high quality and safety of our daily lives. Smoke detectors to warn us of fire, x-ray machines to detect weapons or other devices in luggage and cargo, and certain types of imaging to look for diseases are all application of radiation for the benefit of society

Another excellent source of high quality seaweeds can be obtained from Larch Hanson in Stueben, Maine. Larch gathers his seaweeds from pristine places along the coast of Maine as well. Adaptogens - those all important natural substances that help the body adapt to stress. In order to meet the criteria as defined by the word adaptogen, a. If significant radiation levels are emitted from a source, operators are required to wear personal dosimeters, such as a film badge, to monitor exposure to the radiation field. The Ni-63 sources inside an ECD cell produce such low energy beta radiation that they have no external radiation risk, and in fact no radiation above natural background. Below are 13 of the best natural remedies for exposure to radiation. 1. Nascent Iodine. Radiation has a direct effect on the thyroid gland, inhibiting its ability to create thyroid hormones that require iodine, an imperative player in healthy DNA integrity, immune function, metabolic and endocrine balance, as well as cardiovascular health

exposure (and to some extent exposure from terrestrial sources), exposure to natural radiation is only moderately controllable. Controllability in relation to radon refers to mitigation of radon concentrations in buildings and homes. The average annual effective dose equivalent from all natural sources combined is approximately 3 mSv (300 mrem) Interestingly, there is a background of natural radiation everywhere (ubiquitous) in our environment. Ubiquitous background radiation comes from space (i.e., cosmic rays) and from naturally occurring radioactive materials contained in the earth and in living things. Radiation Exposure from Various Sources

Outside of naturally occurring sources of radiation, there are man-made processes that produce radioactive material that the average person may come into contact with on a regular basis. The levels are still fairly low, with annual exposure to the public due to artificial sources being roughly equal to the dose received from natural sources MegaHydrate/Crystal Energy: MegaHydrate and Crystal Energy are natural antioxidants created by Dr. Patrick Flanagan. Specifically, the product is a source of negatively charged hydrogen ions connected to silica, which has the ability to drive radiation off out of the body Environmental radiation. Radiation has always been a natural part of our environment. Natural radioactive sources in the soil, water and air contribute to our exposure to ionizing radiation, as well as man-made sources resulting from mining and use of naturally radioactive materials in power generation, nuclear medicine, consumer products, military and industrial applications

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The following factsheets explain different places where you may encounter radiation in schools, universities, or laboratories.Some of these things can be found in other places as well.Learn more about radiation in your day-to-day life by exploring RadTown The remaining twenty percent comes from man-made radiation sources, such as those used in medical and dental diagnostic procedures. One source of natural radiation is cosmic radiation. The earth and all living things on it are constantly being bombarded by radiation from space. The sun and stars emits EM radiation of all wavelengths Natural Background Sources. Natural background radiation comes from the following three sources: Cosmic Radiation. The sun and stars send a constant stream of cosmic radiation to Earth, much like a steady drizzle of rain. Differences in elevation, atmospheric conditions, and the Earth's magnetic field can change the amount (or dose) of cosmic.

So far, several alpha indices have been proposed to assess the exposure Assessment of human exposures to natural sources of radiation and radon-222Current Research Paper ESAIJ, 10(12) 2015 An Indian Journal TABLE 2 :2Mean radionuclide's concentration at specific locations away from Suez FactoryDistance (m) C u (Bq/Kg) C th (Bq/Kg) C k (Bq/Kg) D. The sources of radiation pollution involve any process that emanates radiation in the environment. While there are many causes of radiation pollution (including research and medical procedures and waste, nuclear power plants, TVs, computers, radio waves, cell phones, etc.), the most common ones that can pose moderate to serious health risks include

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Sources of Environmental Radiation: Natural and Man-Mad

Clockwise from upper left: radiation detectors, abandoned oil field pipe, natural sources of radiation, and pipe scale ().Naturally Occurring Radioactive Materials (NORM) and Technologically Enhanced Naturally Occurring Radioactive Materials (TENORM) contain radioactive material, some in very small quantities 1. Ann ICRP. 1984;14(1):1-8. Principles for limiting exposure of the public to natural sources of radiation. [No authors listed] PMID: 642635 Fact: Most of the radioactivity you are normally exposed to is from natural sources. You've grown up on a planet which has, in places, quite a high level of background radiation, and life on Earth has evolved to cope with this. Your cells have self-repairing mechanisms which allow them to survive relatively unscathed Sources of radiation radiationEnergy given off as either particles or rays. are all around us all the time. Some are natural and some are man-made. The amount of radiation absorbed by a person is measured in dose. A dose is the amount of radiation energy absorbed by the body. See Radiation Basics for information about dose For many experimental studies in photobiology it is simply not practicable to use natural sunlight and so artificial sources of UV radiation designed to simulate the UV component of sunlight are employed; these are based on either optically filtered xenon arc lamps or fluorescent lamps

What Is Natural Radioactivity? (with pictures

People working with ionising radiation are receiving radiation coming from artificial and natural sources. In Spain, as in many other countries , there is a serious control by the national authorities, Spanish Nuclear Safety Council, of the dose th Refer to MCQ Class 12 Nature of Radiation and Matter provided below which is an important chapter in Class 12 Physics. Students should go through the MCQs questions for Class 12 Physics Chapter 11 Nature of Radiation and Matter with answers given below so that they are able to understand the complete topic properly (Nuclear medicine procedures, which use radioactive material to create images of the body, account for about 12 percent of radiation exposure, and natural sources of radiation in the environment.

Natural and man-made radiation sourcesPolimaste

2 mSv/yr (200 mrem) is the typical background radiation from natural sources, including an average of 0.7 mSv/yr from radon in air. This is close to the minimum dose received by all humans anywhere on Earth. 0.3-0.6 mSv/yr (30-60 mrem) is a typical range of dose rates from artificial sources of radiation, mostly medical Sources of Naturally Occurring Radiation (Whole Body Equivalents) 25 to 35-Human body's own radiation dose per year from radioactive elements and minerals in the body. 300-Average annual natural background radiation, sea level (includes your own body radiation, cosmic radiation and radon) Radiation Protection Programs handle licensing, inspections and enforcement of users of ionizing radiation in the State of Georgia, investigation of incidents involving radioactive materials, development of emergency plans, emergency responder training and readiness exercises as pertaining to radioactive materials and nuclear power facilities The sun is our primary natural source of UV radiation. Artificial sources include tanning booths, black lights, curing lamps, germicidal lamps, mercury vapor lamps, halogen lights, high-intensity discharge lamps, fluorescent and incandescent sources, and some types of lasers (excimer lasers, nitrogen lasers, and third harmonic Nd:YAG lasers)

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Natural Sources of Radiation Exposure - YouTub

to these sources of radiation, which are usually in small quantities. Figure 2 shows the background radiation from the ground and the sky. 3.1 Natural Radiation Sources 3.1.1 External Sources External sources of background radiation include: cosmic radiation, which comes from the sun and other sources in space, and terrestrial radiation Footnote 2 Sources of natural radiation can be classified into three groups: the dose that comes from direct cosmic radiation that arrives at the earth's surface from the sun and outer space; the dose from environmental radiation, which comes from the natural radioactivity at the earth's surface; and internal radiation 3. medical and dental x-rays. (A) 1 only (B) 1 and 2 only (C) 2 and 3 only (D) 1, 2, and 3 ————————————————————————— The entire population of the world is exposed to varying amounts of background (environmental) radiation. Sources of background radiation are either natural or man-made. Exposure to natural background radiation is a result of.

Sources of radiation - Nuclear radiation - National 5

Sources of greenhouse gases. Some greenhouse gases, such as methane, are produced through agricultural practices, in the form of livestock manure, for example. Others, like CO2, largely result. Sources of Electromagnetic Radiation in the Home 1. Cellphones. Cell phones are some of the most significant sources of EMF radiation, and not just because of their potency. People have cell phones close to themselves the whole day ASSESSMENT OF HUMAN EXPOSURE TO NATURAL SOURCE OF RADIATION ON THE SOIL IN TONGAREN CONSTITUENCY OF BUNGOMA COUNTY, KENYA MUSAMALI ENOCK WANJALA [B.ED. (SC)] I56/CE/26603/2011 A thesis submitted in partial fulfillment of the requirements for the award of the Degre Natural Resources program staff provide timely and accurate complaint investigations, inquiry response, compliance inspections, enforcement activities, guidance on best practices, interagency coordination, and reviews for all building permits, development and plat reviews, Comprehensive Plan Amendment requests, and zoning applications

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A number of sources of natural radiation that penetrate our bodies through the food we eat, the air we breathe and the water we drink. Potassium-40 is the main source of internal irradiation (aside from radon decay) found in a variety of everyday foods. The average effective dose from these sources is approximately 0.3 mSv a year Radiation exposure cannot be entirely avoided on this planet. Taking into account how much radiation people receive from natural sources, medical ionizing radiation accounts for only a small proportion of the annual average dose for the average patient. The proper use of medical ionizing radiation can greatly benefit patients

Man-made Sources of Radiation - Artificial Radiation Source

We are constantly exposed to radiation, whether from natural or man-made sources. Radiation consists of energy and particles that are given off by unstable atoms as part of a natural process to become stable or generate durng the operati on of high energy devices (e.g., accelerators). When we are exposed to radiation Although there is worldwide variation in the levels, the reality is that we have always been and, will always be, exposed to background radiation from natural sources. In Australia, each of us receives an average dose of 1.5 mSv per year from a typical Australian lifestyle UV radiation comes naturally from the sun, and from man-made sources like tanning beds, phototherapy, and welding torches X-rays and gamma rays. This type of radiation comes from both natural and. The song says diamonds are a girl's best friend, but they' re also a radiation source of up to 0.03 mrem per year. Some, like Zircon, are naturally radioactive, while others are bombarded with.