For neutron radiation, the value is energy-dependent and amounts to 5 to 20. Becquerel sievert. On the other hand, similar biological damage (one sievert) can be caused only by 1/20 gray of alpha radiation (due to high wR of alpha radiation). To anyone new to the field of nuclear physics, the units are positively nonplussing. Unter Kontamination Calculate the primary photon dose rate, in gray per hour (Gy.h-1), at the outer surface of a 5 cm thick lead shield. Millicurie (mCi) , Assume that the effective distance of the source from the dose point is 10 cm. 2) You may not distribute or commercially exploit the content, especially on another website. As shown in the table, a wR of 1 is for all low-LET radiations, i.e. Main purpose of this project is to help the public learn some interesting and important information about the peaceful uses of nuclear energy. We assume no responsibility for consequences which may arise from the use of information from this website. The previous examples can help illustrate relative magnitudes. From biological consequences point of view, it is very important to distinguish between doses received over short and extended periods. Note that the relationship between half-life and the amount of a radionuclide required to give an activity of one curie is shown below. Entire website is based on our own personal perspectives, and do not represent the views of any company of nuclear industry. This website does not use any proprietary data. High doses tend to kill cells, while low doses tend to damage or change them. Wie wahrscheinlich es ist,dass ein einzelnes Atom innerhalb der nächsten Sekunde zerfällt,wird durch die Halbwertszeitdieses Nuklids angeg… Kilocurie (kCi) , Millibecquerel (mBq) , ISBN-13: 978-0470131480. Die Einheit von Sievert ist für den Strahlenschutz von Bedeutung und wurde nach dem schwedischen Wissenschaftler Rolf Sievert … How to convert curie to becquerel. Similarly to a heat from a fire, if you are too close, the intensity of heat radiation is high and you can get burned. Umso verwirrender, als amerikanische Berichte oft andere Einheiten verwenden als europäische und manche (wie das Curie) veraltet, aber dennoch gebräuchlich sind. Curie (Ci) , Becquerel versus Sievert Thread starter kiskrof; Start date Aug 23, 2014; Aug 23, 2014 #1 kiskrof. But what is the relationship between becquerels (radioactivity) and sieverts (equivalent dose)? Co; 1st edition, 1965. 1 MBq (Mega-Becquerel) = 1000 kBq = 1000000 Bq . If you are too far from heat source, the insufficiency of heat can also hurt you. The slug per US gallon density measurement unit is used to measure volume in US gallons in order to estimate weight or mass in slugs. An “acute dose” is one that occurs over a short and finite period of time, while a “chronic dose” is a dose that continues for an extended period of time so that it is better described by a dose rate. Această unitate a fost denumită după fizicianul francez Antoine Henri Becquerel, care în anul 1903 a primit împreună cu Marie Curie premiul Nobel pentru descoperirea fenomenului de radioactivitate. One becquerel (1Bq) is defined as the radioactivity in which one nucleus decays per second. Berechnung der Radioaktivität. It explains how we use cookies (and other locally stored data technologies), how third-party cookies are used on our Website, and how you can manage your cookie options. However, when people or another system (also non-biological) are exposed to radiation, energy is deposited in the material and radiation dose is delivered. How can I get values in (Sv/Bq)? Also, explore tools to convert millicurie or becquerel to other radiation-activity units or learn more about radiation-activity conversions. How to convert Bq/g (Activity) to Sievert/g(Dose)? This assumption generally underestimates the true dose rate, especially for thick shields and when the dose point is close to the shield surface, but this assumption simplifies all calculations. Martin, James E., Physics for Radiation Protection 3rd Edition, Wiley-VCH, 4/2013. That means one sievert is equivalent to one gray of gamma rays deposited in certain tissue. Die Menge eines radioaktiven Stoffes und wie stark er strahlt,wird durch die Aktivität angegeben. The sievert represents the equivalent biological effect of the deposit of a joule of gamma rays energy in a kilogram of human tissue. Please help, it is really confusing. Disintegrations/minute , © 2015, , All rights reserved, You contribution is vital for our project. Becquerel & Sievert Co., Ltd. at 1 NO.56 LANE 258 JUIKUANG RD. Equivalent doses measured in industry and medicine often have usually lower doses than one sievert, and the following multiples are often used: Conversions from the SI units to other units are as follows: For photon and electron radiation, the radiation weighting factor has the value 1 independently of the energy of the radiation and for alpha radiation the value 20. Absorbed dose is defined as the amount of energy deposited by ionizing radiation in a substance. A smooth curve, considered an approximation, was fitted to the wR values as a function of incident neutron energy. Nuclear and Particle Physics. 1 kBq (Kilo-Becquerel) = 1000 Bq . NEIHU DIST. For this calculation, assume that all decays go through this channel. pr. Becquerel and Curie are the units of radioactivity. Il sievert (simbolo Sv, pronuncia svedese [ˈsiːvəʈ]), il cui nome deriva da quello dello scienziato svedese Rolf Sievert, è l'unità di misura della dose. Then calculate the equivalent dose rate. A becquerel (Bq) is a derived metric SI (System International) measurement unit of radioactivity. Rutherford , Its largest customer is Capintec INC (nj) with most shipments via the port of Long Beach, CA. A dose of one Sv caused by gamma radiation is equivalent to an energy deposition of one joule in a kilogram of a tissue. 1 becquerel = 2.7027027027027E-11 curie. We shall also assume that the dose point is soft tissue and it can reasonably be simulated by water and we use the mass energy absorption coefficient for water. The electric charge Q is a property of bodies to exert forces on each other by electric fields.. sl/US c to dwt/cm³ conversion table, sl/US c to dwt/cm³ unit converter or convert between all units of density … Source(s): I used to be a nuclear engineer. Becquerel - Curie - Rutherford 1 Bequerel = 1 Zerfallsereignis pro Sekunde ... Blutalkohol-Rechner Body Mass Index Schwangerschaftskalender Sternzeichen (astro/chin) Primzahlen-Prüfer Römische Zahlen Zahlenbasis Bin-Dez-Hex Surf-Speed testen Downloadzeit Datengrösse Bit … TAIPEI 114 TAIWANR.O.C. The primary photon dose rate is attenuated exponentially, and the dose rate from primary photons, taking account of the shield, is given by: As can be seen, we do not account for the buildup of secondary radiation. The energy is transferred in small quantities for each interaction between the radiation and a molecule and there are usually many such interactions. Curie is defined as the activity of 1 gram of the radium isotope 226 Ra. Nanocurie (nCi) , But any radioactive source represents no biological risk as long as it is isolated from the environments. As can be seen, low-level doses are common for everyday life. It is a part of our natural world that has been here since the birth of our planet. Becquerel is a unit of radioactivity and focuses on where radiation comes from. Activity of the source directly influences the radiation dose deposited in the material. Addison-Wesley Pub. So, you can't simply convert Becquerels into Sieverts. Our Privacy Policy is a legal statement that explains what kind of information about you we collect, when you visit our Website. The sievert takes into account the relative biological effectiveness (RBE) of ionizing radiation, since each form of such radiation—e.g., X-rays, gamma rays, neutrons—has a slightly different effect on living tissue. Disintegrations/second , In the following points we try to express enormous ranges of radiation exposure, which can be obtained from various sources. U.S. Department of Energy, Nuclear Physics and Reactor Theory. Sievert (Sv), unit of radiation absorption in the International System of Units (SI). J. R. Lamarsh, A. J. Baratta, Introduction to Nuclear Engineering, 3d ed., Prentice-Hall, 2001, ISBN: 0-201-82498-1. These factors are given below. Das Sievert repräsentiert den äquivalenten biologischen Effekt der Ablagerung eines Joules Gammastrahlenenergie in einem Kilogramm menschlichem Gewebe. If the source is too intensive and time or distance do not provide sufficient radiation protection, the shielding can be used. It implies that the energy of the incident radiation field in joules has increased by a factor of 20, thereby violating the laws of Conservation of energy. Stack Exchange Network. However, this is not the case. One sievert is a large amount of equivalent dose. Paul Reuss, Neutron Physics. sekund). BECQUEREL & SIEVERT CO LTD is a supplier in Taipei City, Taiwan. Thus for example, an absorbed dose of 1 Gy by alpha particles will lead to an equivalent dose of 20 Sv, and an equivalent dose of radiation is estimated to have the same biological effect as an equal amount of absorbed dose of gamma rays, which is given a weighting factor of 1. On the other hand, similar biological damage (one sievert) can be caused only by 1/20 gray of alpha radiation (due to high w R of alpha radiation). The rate at which particles are received by the tissue (related to the Becquerel bit) Irradiation time. The non-SI unit rad is sometimes also used, predominantly in the USA.For radiation protection purposes, the absorbed dose is averaged over an organ or tis… Wenn es um Radioaktivität oder Strahlung geht, taucht immer wieder der Begriff Becquerel auf. Encuentre a sus clientes, obtenga información de contacto y detalles acerca 23 de envíos. When we use data that are related to certain product, we use only data released by public relations departments and allowed for use. Our Website follows all legal requirements to protect your privacy. Find their customers, contact information, and details on 23 shipments. as long as it is isolated from the environments. Effective dose allows to determine the biological consequences of partial irradiation (non-uniform) to consequences of complete irradiation. Becquerel & Sievert Co., Ltd. localizada en 1 NO.56 LANE 258 JUIKUANG RD. The becquerel [Bq] to curie [Ci] conversion table and conversion steps are also listed. The higher the value expressed in becquerels, the larger the radiation being emitted. døgn (det er lidt for dramatisk at benytte antal tabletter pr. The sievert is important in dosimetry and radiation protection, and is named after Rolf Maximilian Sievert, a Swedish medical physicist renowned for work on radiation dose … . Ich wollte mir mal ausrechnen, wie viel Becquerel man abkriegen darf, um nicht mehr als <= 0,2 µSv/h abzubekommen. Enter the values for Bq and click calculate to convert Bq to Ci. It is therefore very important to distinguish between radioactivity of a radioactive source and the. Berechnen Sie die Aktivität in Curies und Becquerels. Nuclear Reactor Engineering: Reactor Systems Engineering, Springer; 4th edition, 1994, ISBN: 978-0412985317, W.S.C. 13 1. Becquerel is defined as the activity of a quantity of radioactive material in which one nucleus decays per second. For example charged particles with high energies can directly ionize atoms. Low doses spread out over long periods of time don’t cause an immediate problem to any body organ. Copyright 2021 Nuclear Power for Everybody | All Rights Reserved | Powered by. Bq/m² (= Becquerel pro Quadratmeter) ist die Einheit für (Oberflächen-)Kontamination. 1) You may use almost everything for non-commercial and educational use. The Sievert is a measure of the amount of energy deposited in unit mass of tissue (1Sv is 1 J/kg). Clarendon Press; 1 edition, 1991, ISBN: 978-0198520467, G.R.Keepin. It has exported 3 shipments to the U.S. this year. Use of becquerels and sieverts These units can be used to express the total or accumulated equivalent dose, which is useful to talk about a one-time exposure, or a person’s lifetime dose. Becquerel and Curie are the units of radioactivity. Instant free online tool for millicurie to becquerel conversion or vice versa. W. M. Stacey, Nuclear Reactor Physics, John Wiley & Sons, 2001, ISBN: 0- 471-39127-1. Robert Reed Burn, Introduction to Nuclear Reactor Operation, 1988. The SI unit of H T is the sievert (Sv) or but rem (roentgen equivalent man) is still commonly used (1 Sv = 100 rem). Example: convert 16 Ci to Bq: 16 Ci = 4.3243243243243E-10 Bq Glasstone, Sesonske. ISBN-13: 978-3527411764. Note that En is the neutron energy in MeV. The radiation weighting factor is a dimensionless factor used to determine the equivalent dose from the absorbed dose averaged over a tissue or organ and is based on the type of radiation absorbed. The SI unit for measuring the amount of radioactivity is the becquerel (symbol Bq).The becquerel is named in honour of Henri Becquerel, a French physicist who discovered radioactivity in 1896.One becquerel (1Bq) is equal to 1 disintegration per second.. An older unit of radioactivity is the curie. This analogy, in a certain sense, can be applied to radiation also from radiation sources. For example, an absorbed dose of 1 Gy by alpha particles will lead to an equivalent dose of 20 Sv. The main photon peak of Ba-137m is 662 keV. One/second (1/s) , Williams. Absorbed dose is given the symbol D. The absorbed dose is usually measured in a unit called the gray (Gy), which is derived from the SI system. If you are at the right distance, you can withstand there without any problems and moreover it is comfortable. That means one sievert is equivalent to one gray of gamma rays deposited in certain tissue. Becquerel and Sievert Becquerel (Bq) Unit indicating the amount of radioactivity Units of Radiation One nucleus decays per second = 1 becquerel(Bq) Radioactive materials Sievert(Sv) Unit of radiation exposure dose that a person receives Associated with radiation effects 1 mSvfrom outside the body 1 mSvfrom within Absorbed dose is defined as the amount of energy deposited by ionizing radiation in a substance. Pour reprendre la question de becquerel sievert, j'ai cru lire balade dans le Mercantour et pas contamination dans son jardin. Primary photon dose rate neglects all secondary particles. Becquerel (pronunțat [], simbol: Bq) este o unitate de măsură în SI a radioactivității. Die Aktivität in Bequerel gibt an, wie viele Atomeeines radioaktiven Stoffes pro Sekunde zerfallen.Damit ist die Aktivität eine bestimmtenNuklids eine Einheit für dieMenge dieser radioaktiven Stoffe. DOE Fundamentals Handbook, Volume 1 and 2. Here is the calculator to convert the values of Curie (Ci) to Becquerel (Bq). Knoll, Glenn F., Radiation Detection and Measurement 4th Edition, Wiley, 8/2010. Assume that this external radiation field penetrate uniformly through the whole body. This amount of material can be calculated using λ, which is the decay constant of certain nuclide: About 94.6 percent decays by beta emission to a metastable nuclear isomer of barium: barium-137m. Berechnen Sie dann die Zeit, die die Aktivität benötigt, um 0,1 mCi zu erreichen. Die Einheit für Aktivität ist dasBecquerel. A Ci is a deprecated non-SI unit of radioactivity defined as 1 Ci = 3.7 × 10 10 decays per second. Instant free online tool for becquerel to curie conversion or vice versa. Sievert is derived from the physical quantity absorbed dose, but also takes into account the biological effectiveness of the radiation, which is dependent on the radiation type and energy. The resulting weighted dose was designated as the organ- or tissue equivalent dose: An equivalent dose of one Sievert represents that quantity of radiation dose that is equivalent, in terms of specified biological damage, to one gray of X-rays or gamma rays. In, around, and above the world we live in. It is used to express the amount of radioactive materials contained in soil, foods, tap water, etc. Since one sievert is very large, we usually hear of the much smaller millisieverts (1/1000 sievert) or microsieverts (1/100000 sievert). For radiation protection purposes, the absorbed dose is averaged over an organ or tissue, T, and this absorbed dose average is weighted for the radiation quality in terms of the radiation weighting factor, wR, for the type and energy of radiation incident on the body. However, when people or another system (also non-biological) are exposed to radiation, energy is deposited in the material and radiation dose is delivered. Im Strahlenschutz ist das Sievert eine abgeleitete Einheit aus Äquivalentdosis und effektiver Dosis. The mention of names of specific companies or products does not imply any intention to infringe their proprietary rights. Mathematically, the effective dose can be expressed as: We must note that radiation is all around us. Assume the point isotropic source which contains 1.0 Ci of 137Cs, which has a half-life of 30.2 years. Becquerel (Bq) One of three units used to measure radioactivity, which refers to the amount of ionizing radiation released when an element (such as uranium) spontaneously emits energy as a result of the radioactive decay (or disintegration) of an unstable atom.Radioactivity is also the term used to describe the rate at which radioactive material emits … 02 Jan. röntgen sievert rechner. Physics of Nuclear Kinetics. Becquerel (Bq) , The radiation weighting factor causes that the sievert cannot be a physical unit. Unitatea becquerel stabilește numărul de nuclee care se dezintegrează pe secundă: It is therefore very important to distinguish between radioactivity of a radioactive source and the radiation dose which may result from the source. Becquerel svarer så til det antal tabletter, man indtager - f.eks. Also, explore tools to convert becquerel or curie to other radiation-activity units or learn … Stabin, Michael G., Radiation Protection and Dosimetry: An Introduction to Health Physics, Springer, 10/2010. 1 curie = 37000000000 becquerel. The effects of low doses of radiation occur at the level of the cell, and the results may not be observed for many years. Various body tissues react to ionising radiation in different ways, so the ICRP has assigned sensitivity factors to specified tissues and organs so that the effect of partial irradiation can be calculated if the irradiated regions are known. "Becquerel" and "sievert" are the most common units of radiation. January 1993. The non-SI unit rad is sometimes also used, predominantly in the USA. The amount of radiation exposure depends on the distance from the source of radiation. Therefore, the sievert is not a physical dose unit. ISBN-13: 978-1441923912. J. R. Lamarsh, Introduction to Nuclear Reactor Theory, 2nd ed., Addison-Wesley, Reading, MA (1983). Becquerel in Sievert umrechnen Becquerel in Sievert umrechnen. Gigabecquerel (GBq) , It is a natural energy force that surrounds us. A becquerel (Bq) is the SI derived unit of radiation activity. Sievert er den påvirkning, som legemet påvirkes med - svarende til at man angiver en medicinsk påvirkning i antallet af indtagne tabletter, hvor manindregner tabletternes effekt. The becquerel (English: / b ɛ k ə ˈ r ɛ l /; symbol: Bq) is the SI derived unit of radioactivity. Kilobecquerel (kBq) , To calculate the absorbed dose rate, we have to use in the formula: The resulting absorbed dose rate in grays per hour is then: Since the radiation weighting factor for gamma rays is equal to one and we have assumed the uniform radiation field, we can directly calculate the equivalent dose rate from the absorbed dose rate as: If we want to account for the buildup of secondary radiation, then we have to include the buildup factor. The curie was originally defined as equivalent to the number of … Eine Materialprobe enthält 1 Mikrogramm Jod-131. If secondary particles are produced or if the primary radiation changes its energy or direction, then the effective attenuation will be much less. The millicurie [mCi] to becquerel [Bq] conversion table and conversion steps are also listed. On the other hand electrically neutral particles interacts only indirectly, but can also transfer some or all of their energies to the matter. Das MIT (andere … For this case the true dose rate (with the buildup of secondary radiation) will be more than two times higher. TAIPEI 114 TAIWANR.O.C. people spend near the source of radiation. Megabecquerel (MBq) , In previous chapters, we have discussed radioactivity and the intensity of a radioactive source, measured usually in becquerels. Posted at 03:40h in Allgemein by This website was founded as a non-profit project, build entirely by a group of nuclear engineers. The effective dose is a dose quantity defined as the sum of the tissue-equivalent doses weighted by the ICRP organ (tissue) weighting factors, wT, which takes into account the varying sensitivity of different organs and tissues to radiation. Sie gibt an, welche Menge der radioaktiven Substanz sich pro Quadratmeter auf einer Oberfläche befindet. In radiation protection, the sievert is a derived unit of equivalent dose and effective dose. Dose limits are set in terms of effective dose and apply to the individual for radiological protection purposes, including the assessment of risk in general terms. Thank you, 0.01 Curie [Ci] = 370000000 Becquerel [Bq], 0.01 Becquerel [Bq] = 2.7027027027027E-13 Curie [Ci], 0.02 Curie [Ci] = 740000000 Becquerel [Bq], 0.02 Becquerel [Bq] = 5.4054054054054E-13 Curie [Ci], 0.03 Curie [Ci] = 1110000000 Becquerel [Bq], 0.03 Becquerel [Bq] = 8.1081081081081E-13 Curie [Ci], 0.05 Curie [Ci] = 1850000000 Becquerel [Bq], 0.05 Becquerel [Bq] = 1.3513513513514E-12 Curie [Ci], 0.1 Curie [Ci] = 3700000000 Becquerel [Bq], 0.1 Becquerel [Bq] = 2.7027027027027E-12 Curie [Ci], 0.2 Curie [Ci] = 7400000000 Becquerel [Bq], 0.2 Becquerel [Bq] = 5.4054054054054E-12 Curie [Ci], 0.3 Curie [Ci] = 11100000000 Becquerel [Bq], 0.3 Becquerel [Bq] = 8.1081081081081E-12 Curie [Ci], 0.5 Curie [Ci] = 18500000000 Becquerel [Bq], 0.5 Becquerel [Bq] = 1.3513513513513E-11 Curie [Ci], 1 Curie [Ci] = 37000000000 Becquerel [Bq], 1 Becquerel [Bq] = 2.7027027027027E-11 Curie [Ci], 2 Curie [Ci] = 74000000000 Becquerel [Bq], 2 Becquerel [Bq] = 5.4054054054054E-11 Curie [Ci], 3 Curie [Ci] = 111000000000 Becquerel [Bq], 3 Becquerel [Bq] = 8.1081081081081E-11 Curie [Ci], 5 Curie [Ci] = 185000000000 Becquerel [Bq], 5 Becquerel [Bq] = 1.3513513513513E-10 Curie [Ci], 10 Curie [Ci] = 370000000000 Becquerel [Bq], 10 Becquerel [Bq] = 2.7027027027027E-10 Curie [Ci], 20 Curie [Ci] = 740000000000 Becquerel [Bq], 20 Becquerel [Bq] = 5.4054054054054E-10 Curie [Ci], 30 Curie [Ci] = 1110000000000 Becquerel [Bq], 30 Becquerel [Bq] = 8.1081081081081E-10 Curie [Ci], 50 Curie [Ci] = 1850000000000 Becquerel [Bq], 50 Becquerel [Bq] = 1.3513513513513E-9 Curie [Ci], 100 Curie [Ci] = 3700000000000 Becquerel [Bq], 100 Becquerel [Bq] = 2.7027027027027E-9 Curie [Ci], 200 Curie [Ci] = 7400000000000 Becquerel [Bq], 200 Becquerel [Bq] = 5.4054054054054E-9 Curie [Ci], 500 Curie [Ci] = 18500000000000 Becquerel [Bq], 500 Becquerel [Bq] = 1.3513513513513E-8 Curie [Ci], 1000 Curie [Ci] = 37000000000000 Becquerel [Bq], 1000 Becquerel [Bq] = 2.7027027027027E-8 Curie [Ci], 2000 Curie [Ci] = 74000000000000 Becquerel [Bq], 2000 Becquerel [Bq] = 5.4054054054054E-8 Curie [Ci], 5000 Curie [Ci] = 1.85E+14 Becquerel [Bq], 5000 Becquerel [Bq] = 1.3513513513513E-7 Curie [Ci], 10000 Curie [Ci] = 3.7E+14 Becquerel [Bq], 10000 Becquerel [Bq] = 2.7027027027027E-7 Curie [Ci], 50000 Curie [Ci] = 1.85E+15 Becquerel [Bq], 50000 Becquerel [Bq] = 1.3513513513513E-6 Curie [Ci], 1 Curie [Ci] = 37000000000 Becquerel [Bq], 1 Curie [Ci] = 0.037 Terabecquerel [TBq], 1 Curie [Ci] = 37000 Megabecquerel [MBq], 1 Curie [Ci] = 37000000 Kilobecquerel [kBq], 1 Curie [Ci] = 37000000000000 Millibecquerel [mBq], 1 Curie [Ci] = 1000000000 Nanocurie [nCi], 1 Curie [Ci] = 1000000000000 Picocurie [pCi], 1 Curie [Ci] = 37000000000 One/second [1/s], 1 Curie [Ci] = 37000000000 Disintegrations/second, 1 Curie [Ci] = 2220000000000 Disintegrations/minute. Encore une fois la distance et les écrans sont des systèmes très efficaces. Its top carrier is Apex Shipping CO. 103: The 2007 Recommendations of the International Commission on Radiological Protection). The sievert (symbol: Sv) is a derived unit of ionizing radiation dose in the International System of Units (SI) and is a measure of the health effect of low levels of ionizing radiation on the human body. The extended formula for the dose rate is then: If you want to get in touch with us, please do not hesitate to contact us via e-mail: The information contained in this website is for general information purposes only. Microcurie (µCi) , Terabecquerel (TBq) , Zerfallsreihe zuletzt editiert von . This may seem to be a paradox. The Cookies Statement is part of our Privacy Policy. Strahlendosimetrie EDP Sciences, 2008. Nur Nutzer mit entsprechenden Rechten können es sehen.? What is radioactivity Instant conversions Conversion tables; 1 Bq = 0.001 kBq Bq>kBq kBq>Bq What is kBq; 1 Bq = 1.0×10-6 MBq Bq>MBq MBq>Bq What is MBq A person who has absorbed a whole body dose of 1 Sv has absorbed one joule of energy in each kg of body tissue (in case of gamma rays). Absorbed dose is given the symbol D.  The absorbed dose is usually measured in a unit called the gray (Gy), which is derived from the SI system. Rem, Sievert, Becquerel, Curie – die Maßeinheiten, die im Zusammenhang mit Radioaktivität (und deren Problemen) verwendet werden, sind für Nicht-Fachleute manchmal verwirrend.