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Radioactive isotope of caesium
Caesium-137 (137 55Cs), cesium-137 (US), or radiocaesium, is a radioactive isotope of caesium that is formed as one of the more common fission products
Caesium-137
Chemical element with atomic number 55 (Cs)
Pauling scale. It has only one stable isotope, caesium-133. Caesium is mined mostly from pollucite. Caesium-137, a fission product, is extracted from waste
Caesium
half-lives less than 2 weeks, most under an hour. Caesium is an abundant fission product (135 and 137 are directly produced) and various isotopes are of
Isotopes_of_caesium
1987 radioactive contamination incident in Brazil
(Brazilian Portuguese: [ɡo(j)ˈjɐniɐ])), also known locally as the caesium-137 accident/caesium-137 Goiânia, was a radioactive contamination accident that occurred
Goiânia_accident
Effects of radiation released from the Fukushima nuclear accident
Radioactive particles from the incident, including iodine-131 and caesium-134/137, have since been detected at atmospheric radionuclide sampling stations
Radiation effects from the Fukushima nuclear accident
Radiation_effects_from_the_Fukushima_nuclear_accident
American chemistry student and co-discoverer of caesium-137 (1919–2006)
American chemist and a co-discoverer, with Glenn T. Seaborg, of the isotope caesium-137. In 1940, Melhase was an undergraduate in the college of chemistry at
Margaret_Melhase
Forest within the Chernobyl Exclusion Zone in Ukraine
the soil with strontium-90 and caesium-137, which have half-lives of about 30 years. The highest levels of caesium-137 are found in the surface layers
Red_Forest
Coral atoll in the Marshall Islands
the residents' bodies were carrying abnormally high concentrations of caesium-137. They were evacuated again in September 1978. The atoll is occasionally
Bikini_Atoll
Assessment of Chernobyl's impact on Earth since 1986
chain, such as some of the isotopes of iodine, caesium and strontium. Iodine-131 was and caesium-137 remains the two most responsible for the radiation
Effects of the Chernobyl disaster
Effects_of_the_Chernobyl_disaster
Chemical compound
of the precipitate. When enriched in radioisotopes, such as 137 CsCl or 131 CsCl, caesium chloride is used in nuclear medicine applications such as treatment
Caesium_chloride
Argentina – A construction worker at a chemical plant discovered a caesium-137 source and carried it in his pants pocket for 17 hours (right pocket
List of orphan source incidents
List_of_orphan_source_incidents
Radioactive water from a 2011 nuclear accident in Japan
became contaminated with radioactive nuclides, such as iodine-131, caesium-134, caesium-137, and strontium-90. Over 500,000 tonnes of untreated wastewater
Discharge of radioactive water of the Fukushima Daiichi Nuclear Power Plant
Discharge_of_radioactive_water_of_the_Fukushima_Daiichi_Nuclear_Power_Plant
1998 radiological contamination accident occurring in Cádiz, Spain
radioactive contamination accident in the province of Cádiz. In May 1998, a caesium-137 source managed to pass through the monitoring equipment in an Acerinox
Acerinox_accident
Ionizing radiation
state. The accompanying decay scheme diagram shows the beta decay of caesium-137. 137Cs is noted for a characteristic gamma peak at 661 keV, but this
Beta_particle
Group of highly reactive chemical elements
chemical elements lithium (Li), sodium (Na), potassium (K), rubidium (Rb), caesium (Cs), and francium (Fr). Together with hydrogen they constitute group 1
Alkali_metal
Partially abandoned city in Kyiv Oblast, Ukraine
average caesium-137 doses from the accident (estimated at 1–2 mSv per year) did not exceed those from other sources of exposure. Current effective caesium-137
Chernobyl
Severe events involving radioactive materials
A caesium-137 source managed to pass through the monitoring equipment in an Acerinox scrap metal reprocessing plant. When melted, the caesium-137 caused
Nuclear and radiation accidents and incidents
Nuclear_and_radiation_accidents_and_incidents
Food recall in the United States
BMS (Bahari Makmur Sejati) had received radioactive contamination from caesium-137. This initial report indicated that none of the contaminated shrimp had
2025 radioactive shrimp recall
2025_radioactive_shrimp_recall
Type of radiological weapon
clinic and removed a teletherapy source capsule containing powdered caesium-137 with an activity of 50 TBq. They brought it back to the home of one of
Dirty_bomb
2023 loss and recovery of a caesium-137 capsule
Sometime between 10 and 16 January 2023, a radioactive capsule containing caesium-137 was lost from a truck in Western Australia. The capsule was being transported
Western Australian radioactive capsule incident
Western_Australian_radioactive_capsule_incident
1957 nuclear accident in England
740 terabecquerels (20,000 curies) of iodine-131, as well as 22 TBq (594 curies) of caesium-137 and 12,000 TBq (324,000 curies) of xenon-133, among other radionuclides
Windscale_fire
2016 American crime thriller film
uncover highly classified terrorist plots. After some illegally imported caesium-137 is stolen, Nate is recruited by Angela Zamparo, a fellow FBI Special
Imperium_(2016_film)
abandoned clinic in Goiânia, Brazil. They sold the kilocurie (40 TBq) caesium-137 source as a glowing curiosity. Two hundred and fifty people were contaminated;
List of civilian radiation accidents
List_of_civilian_radiation_accidents
2011 nuclear accident in Japan
material are expressed in terms of the three predominant products released: caesium-137 (137Cs), iodine-131 (131I), and xenon-133. Estimates for atmospheric
Fukushima_nuclear_accident
Chemical separation of spent nuclear fuel
of active nuclear fuel. Another option is to reuse specific isotopes. Caesium-137, strontium-90 and other isotopes are extracted for food irradiation and
Nuclear_reprocessing
Quantitative study of the energy spectra of gamma-ray sources
example of a NaI spectrum is the gamma spectrum of the caesium isotope 137 Cs—see Figure 1. 137 Cs emits a single gamma line of 662 keV. The 662 keV line
Gamma_spectroscopy
Non-SI unit of radioactivity
radiotherapy machine may have roughly 1000 Ci of a radioisotope such as caesium-137 or cobalt-60. This quantity of radioactivity can produce serious health
Curie_(unit)
Radioactive waste dumping site in Russia
including 3.6 EBq of caesium-137 and 0.74 EBq of strontium-90. For comparison, the Chernobyl disaster released 0.085 EBq of caesium-137, a much smaller amount
Lake_Karachay
Chronology of events following the 2011 Fukushima nuclear disaster
briefing. In a press release, TEPCO reports that levels of caesium-134, caesium-136, caesium-137, and iodine-131 (half-life of ~8 days), had spiked since
Timeline of the Fukushima nuclear accident
Timeline_of_the_Fukushima_nuclear_accident
Fictional character from the TV show Dark
saved. Jonas takes Claudia into the caves where they collect a vial of Caesium-137 from a collection of yellow barrels that Bernd Doppler had hid in the
Jonas_Kahnwald
Disaster exclusion zone in Ukraine
monitoring. The borders were based on soil deposits of strontium-90, caesium-137, and plutonium as well as the calculated dose rate (sieverts/h) as identified
Chernobyl_exclusion_zone
Atoms or particles produced by nuclear fission
in 2005) is caesium-137. Iodine-129 is a major radioactive isotope released from reprocessing plants. In nuclear reactors both caesium-137 and strontium-90
Nuclear_fission_product
Unusable radioactive materials
pool) elements, medium lived fission products such as strontium-90 and caesium-137 and finally seven long-lived fission products with half-lives in the
Radioactive_waste
Radiation incident in Ukraine, 1980–1989
SSR from 1980 to 1989. A small capsule containing highly radioactive caesium-137 was found inside the concrete wall of an apartment building, with a surface
Kramatorsk radiological accident
Kramatorsk_radiological_accident
1994 theft in Estonia
placed a metal cylinder in his pocket, not knowing that it was a strong caesium-137 radioactive source that was released from a container broken by the falling
Theft of radioactive material in Tammiku
Theft_of_radioactive_material_in_Tammiku
Synthetic pigment
removal of caesium-137 from the intestine, so indirectly from the bloodstream by intervening in the enterohepatic circulation of caesium-137, reducing
Prussian_blue
Radioactive mass created during meltdown
gamma radiation hazard due to the presence of fission products, mainly caesium-137. Chernobylite – Technogenic mineral Demon core – 1945–1946 sphere of
Elephant's_Foot_(Chernobyl)
1960 weapons test in Reggane, French Algeria
suggesting that Gerboise Bleue explosion site had the second highest caesium-137 surface levels of the four tests of the series, with a residual surface
Gerboise_Bleue_(nuclear_test)
Decontamination effort after the 2011 Fukushima accident
the meltdowns and explosions released 18,000 terabecquerel (TBq) of caesium 137 (equivalent to roughly 5.6 kilograms or 12 pounds), mostly into the Pacific
Fukushima nuclear accident cleanup
Fukushima_nuclear_accident_cleanup
Ion
salts with a variety of cations. It was considered as a precipitant for caesium-137 ions in the context of radioactive waste cleanup. Salts of tetraphenylborate
Tetraphenylborate
Species of fungus found in Europe and North America
concentrates radioactive caesium; specimens collected in Europe following the 1986 Chernobyl disaster contained several times more caesium-137 than those collected
Imleria_badia
Process to make stable elements radioactive
induce this reaction. The isotopes used in food irradiation (cobalt-60, caesium-137) both have energy peaks below this cutoff and thus cannot induce radioactivity
Induced_radioactivity
Nickel mine in Western Australia
dispute between Singapore and Australia over nuclear waste disposal when a caesium-137 density gauge lost at Kambalda contaminated a furnace in Singapore in
Kambalda_Nickel_Operations
Japanese food company
and did not pose a health risk. Tests found caesium-134 at up to 15.2 becquerels per kilogram and caesium-137 at up to 16.5 becquerels per kilogram, below
Meiji_Co.
Food sterilization method
electron volts (MEV) for electron beams and x-ray sources—cobalt-60 or caesium-137 sources are never energetic enough to induce radioactivity. Particles
Food_irradiation
Reactor accident due to core overheating
(such as uranium, plutonium, or thorium) and fission products (such as caesium-137, krypton-85, or iodine-131) within the fuel elements can leach out into
Nuclear_meltdown
Salt mine in Germany
After media reports in 2008 about brine contaminated with radioactive caesium-137, plutonium and strontium, politicians accused the operator, Helmholtz
Asse_II_mine
2023 radiation accident
when a 25-kg cylinder (measuring 30 cm by 13 cm) containing radioactive caesium-137 was reported missing from a coal-fired energy plant in Tha Tum, Si Maha
Prachin Buri radiation incident
Prachin_Buri_radiation_incident
Genus of grasses
Karighatta. Bahia lovegrass (E. bahiensis) is known as a hyperaccumulator of caesium-137 and can be grown to remove the highly toxic radioactive atoms from the
Eragrostis
Process that eliminates all biological agents on an object or in a volume
and food. It is emitted by a radioisotope, usually cobalt-60 (60Co) or caesium-137 (137Cs), which have photon energies of up to 1.3 and 0.66 MeV, respectively
Sterilization_(microbiology)
1954 U.S. thermonuclear weapon test in the Marshall Islands
some time after the tests. This was due to the presence of radioactive caesium-137 in locally grown coconut milk. Plants and trees absorb potassium as part
Castle_Bravo
Atom that has excess nuclear energy, making it unstable
Food irradiation usually uses strong gamma emitters like cobalt-60 or caesium-137.[citation needed] In industry, and in mining, radiation from radionuclides
Radionuclide
1957 radiological contamination disaster in the Soviet Union
on what contamination level is considered significant, primarily with caesium-137 and strontium-90. The land area thus exposed to radioactive contamination
Kyshtym_disaster
Topics referred to by the same term
C-137 may refer to: Boeing C-137 Stratoliner, an airplane Dimension C-137, a setting in the Rick and Morty television series Caesium-137 (Cs-137), a radioactive
C-137
Nuclear-powered attack submarine
samples were taken from within the plume of the release and analysed for caesium-137, measuring activity up to 792 Bq/L. The radionuclides are rapidly diluted
Soviet submarine K-278 Komsomolets
Soviet_submarine_K-278_Komsomolets
Radionuclide emitting ionizing radiation
Tammiku radioactive material theft involved the accidental theft of caesium-137 material in Tammiku, Estonia, in 1994. Common beta emitters Commonly
Radioactive_source
1986 nuclear accident in the Soviet Union
the exclusion zone, causing increased radiation from the release of caesium-137 and strontium-90 from the ground and biomass. The increase in radioactivity
Chernobyl_disaster
Conversion of an atom from one element to another
long-lived fission products,[which?] including the nuclear waste product caesium-137, are unable to capture enough neutrons for effective transmutation to
Nuclear_transmutation
Comparison between the Chernobyl disaster and Fukushima nuclear disaster
2000. Retrieved 27 June 2019. "Figure XI. Surface ground deposition of caesium-137 released in Europe after the Chernobyl accident [D13]" (PDF). United
Comparison of the Chernobyl and Fukushima nuclear accidents
Comparison_of_the_Chernobyl_and_Fukushima_nuclear_accidents
after such a nucleus has been "split" in a nuclear fission reaction. Caesium-137 is one such radionuclide. It has a half-life of 30 years, and decays
Commonly used gamma-emitting isotopes
Commonly_used_gamma-emitting_isotopes
British scientist
possible cardiac effects of 500 Bqkg−1 caesium-137 exposure in rats over 3 months. They observed that, while caesium-137 exposure did not cause any damage
Christopher_Busby
Hypothetical salted nuclear bomb
fusion rather than fission reactions, so the quantity of gamma-emitting caesium-137 fallout was comparatively low. A secondary forest now exists around the
Cobalt_bomb
U.S. Navy facility in San Francisco Bay (1942–1997)
various locations on the island is contaminated with toxic substances. Caesium-137 levels three times higher than previously recorded were found in April
Naval_Station_Treasure_Island
Presence of an unwanted element
after nuclear accident, such as the contamination of Iodine-131 and Caesium-137 after the nuclear disaster in Chernobyl, Ukraine. Note that the term
Contamination
Potential result of major nuclear war
seconds to a few months. Some radioactive isotopes, like strontium-90 and caesium-137, are very long-lived and will create radioactive hot spots for up to
Nuclear_holocaust
Large body of salt water
facilities too can pollute. The Irish Sea was contaminated by radioactive caesium-137 from the former Sellafield nuclear fuel processing plant and nuclear
Sea
Goods inspection system
radiography systems capable of scanning trucks usually use cobalt-60 or caesium-137 as a radioactive source and a vertical tower of gamma detectors. This
Cargo_scanning
Former air-cooled graphite-moderated nuclear reactors
terabecquerels (16,000 Ci) of iodine-131, 4.6 terabecquerels (120 Ci) of caesium-137, 8.8 terabecquerels (240 Ci) of polonium-210 and 12,000 terabecquerels
Windscale_Piles
Breakdown of nuclear fission results
the fuel. As caesium 133, 135, and 137 are formed by the beta particle decay of the corresponding xenon isotopes, this causes the caesium to become physically
Fission_products_(by_element)
City in Krasnoyarsk Krai, Russia
pollution by particulates, including radioisotopes strontium-90, and caesium-137; the metals nickel, copper, cobalt, and lead; selenium; and by gases
Norilsk
Residual radioactive material following a nuclear blast
supplies and would need to be consumed in smaller doses. Long term, cesium-137 and strontium-90 would be the major radionuclides affecting the fresh water
Nuclear_fallout
Nuclear site in Cumbria, England
Plant on site. Discharges into the sea of radioactive effluents – mainly caesium-137 – from Sellafield amounted to 5200 TBq during the peak year, 1975. In
Sellafield
Naturally occurring uranium self-sustaining nuclear chain reactions
strontium-90 (long since decayed to zirconium), and 185 kilograms (408 lb) of caesium-137 (long since decayed to barium). The natural reactor of Oklo has been
Natural nuclear fission reactor
Natural_nuclear_fission_reactor
Radioactive isotope of cobalt
the case of a containment breach over some other gamma sources such as caesium-137. The main uses for 60Co are: As a tracer for cobalt in chemical reactions
Cobalt-60
Species of fungus
organic and mineral layers, are involved in the retention and cycling of caesium-137 in organic-rich forest soils. "Hydnellum peckii Banker 1913". MycoBank
Hydnellum_peckii
Decommissioned nuclear power plant in Ukraine
external gamma radiation emissions at the site are from the isotope caesium-137, which has a half-life of 30.17 years. As of 2016[update], the radiation
Chernobyl_Nuclear_Power_Plant
Related to Periodic Table
million years, is produced by various cosmogenic and nuclear mechanisms; caesium-137 (137Cs), with a half-life of 30.04 years, is generated by nuclear fission
Mononuclidic_element
High-voltage pulse generator
can be improved by doping of the electrodes with radioactive isotopes caesium 137 or nickel 63, and by orienting the spark gaps so that ultraviolet light
Marx_generator
Species of flowering plant
also be used in rhizofiltration to neutralize radionuclides, such as caesium-137 and strontium-90, from contaminated water, as was done in the case of
Common_sunflower
2019 radiation accident in Russia
Moscow for radiation testing. One doctor was found to test positive for caesium-137, though the levels remain unknown, as the medical staff involved were
Nyonoksa_radiation_accident
Was a Cold War-era, 82mm Soviet rocket
with a warhead, which, in one case, contained up to 400g of radioactive caesium-137 and strontium-90. Both types were acquired by militants following the
Alazan_(rocket)
Highly radioactive waste material
short-lived nuclides have decayed, is from the medium-lived fission products caesium-137 and strontium-90, which have half-lives on the order of 30 years. A typical
High-level_waste
Chemical element with atomic number 43 (Tc)
products in reprocessing plants aim at cationic species such as caesium (e.g., caesium-137) and strontium (e.g., strontium-90). Hence the pertechnetate escapes
Technetium
Artificial island in San Francisco Bay, California, US
during construction of the fourth Caldecott Tunnel bore. In April 2013, caesium-137 levels three times higher than previously[when?] recorded were found
Treasure Island, San Francisco
Treasure_Island,_San_Francisco
fallout, sometimes by a factor of ten: "In 1986, a map of theoretical caesium 137 and iodine 131 deposits indicated higher levels than initially estimated
Consequences of the Chernobyl disaster in France
Consequences_of_the_Chernobyl_disaster_in_France
Electronic fault caused by radiation
chamber shielded from radiation, with a known radiation source, such as Caesium-137. When testing microprocessors for SEU, the software used to exercise
Single-event_upset
Border crossings between East and West Germany
detectors ("gamma guns") at border crossings which used radioactive caesium-137 sources to detect people concealed inside vehicles. The discovery of
Crossing the inner German border
Crossing_the_inner_German_border
Isotope of xenon
isotope of xenon with a half-life of 9.14 hours, decaying to long-lived caesium-135. 135Xe is a fission product and it is the most powerful known neutron-absorbing
Xenon-135
2017 studio album by Brand New
"137" contains lyrics about nuclear warfare, specifically referencing the bombing of Nagasaki during World War II. The title refers to Caesium-137, the
Science Fiction (Brand New album)
Science_Fiction_(Brand_New_album)
(half-life 2.552 minutes) occurs in the decay of the common fission product caesium-137. Barium-114 is theorized to undergo cluster decay, emitting a nucleus
Isotopes_of_barium
Sensor to detect the level of substances that flow
water-cooled mold is arranged with a source of radiation, such as cobalt-60 or caesium-137, on one side and a sensitive detector such as a scintillation counter
Level_sensor
Illicit acts involving radioactive material
killed by five months of radiation exposure to a 1.3 curies (48 GBq) caesium-137 source (about 15 mg) that had been put into the door of his truck around
Crimes involving radioactive substances
Crimes_involving_radioactive_substances
Radioisotope of iodine
either to stable xenon, or to various caesium isotopes, some of them radioactive (i.e., caesium-135 and caesium-137). Long irradiation times are disadvantageous
Iodine-125
Isotope of uranium
comparison, the yields of the most abundant individual fission products like caesium-137, strontium-90, and technetium-99 are between 6% and 7%, and the combined
Uranium-236
Chemical element with atomic number 56 (Ba)
(half-life 2.552 minutes) occurs in the decay of the common fission product caesium-137. Alchemists in the early Middle Ages knew about some barium minerals
Barium
Series of devices detecting nuclear explosions
collected by plane. These radionuclides include americium-241, iodine-131, caesium-137, krypton-85, strontium-90, plutonium-239, tritium and xenon. Sending
Nuclear detonation detection system
Nuclear_detonation_detection_system
National laboratory in Albuquerque, New Mexico
facilities, an intense gamma irradiation facility (using cobalt-60 and caesium-137 sources), and the Hot Cell Facility. SNL/NM also has test areas outside
Sandia_National_Laboratories
Capital city of Goiás, Brazil
September 13, 1987, a medical radiation source containing radioactive caesium-137 was stolen from an abandoned hospital in the city, causing four deaths
Goiânia
Row 6 of the periodic table
having a stable isotope, caesium-133. Caesium is mined mostly from pollucite, while the radioisotopes, especially caesium-137, a fission product, are extracted
Period_6_element
Comparison of a wide range of probabilities
per second of a SATA harddisk failure during an MTBF test 5.25×10−10 Caesium-137 atom decay each second 9.9×10−10 Gaussian distribution: probability of
Orders of magnitude (probability)
Orders_of_magnitude_(probability)
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