Occurrence of Bismuth-207 at Eniwetok Atoll

  title={Occurrence of Bismuth-207 at Eniwetok Atoll},
  author={F. G. Lowman and R. F. Palumbo},
DURING March 18–30, 1961, 308 samples of soil, water, algae, land plants, plankton, fish and invertebrates were collected at Eniwetok Atoll for assay of radioactivity. Two of the samples, taken from the bottom of the lagoon, contained a γ-emitting isotope not previously reported at the Eniwetok Test Site. One sample, which consisted primarily of radiolarians, foraminiferans, and small sand grains, was collected in a plankton net placed under the outflow of a salt water supply system for marine… Expand
Radionuclide concentrations in fish and invertebrates from Bikini Atoll
As in other global studies, /sub 137/Cs was found in the highest concentrations in edible flesh of all species of fish and in the lowest concentrations in the bone or liver. The mean concentration ofExpand
Columbia River sediment in Quinault Canyon, Washington — Evidence from artificial radionuclides
Sediments collected from beneath 1500–2000 m of water in Quinault Canyon, off the coast of the State of Washington, contain 60Co and 152Eu which indicate that they are derived from the ColumbiaExpand
Scavenging and retention of bismuth by marine plankton and biogenic particles
The biogeochemical behavior of bismuth in the marine environment closely resembles that of other particle-reactive uranium–thorium (U–Th) series and transuranic elements. Expand
Detection of fallout155Eu and207Bi in a210Pb-dated lake sediment core
Low-energy γ-ray spectrometry is used to detect fallout155Eu and207Bi in a210Pb-dated sediment core from McKay Lake, Ottawa, Canada. Unlike207Bi which is detected only in two core sections depositedExpand
Past and present levels of some radionuclides in fish from Bikini and Enewetak Atolls.
This report contains a summary of all the available data on the concentrations of 137Cs, 60Co and 207Bi in flesh samples of reef and pelagic fish collected from Bikini and Enewetak Atolls between 1964 and 1995. Expand
An evaluation of activated bismuth isotopes in environmental samples from the former Western Pacific Proving Grounds
Abstract207Bi (T1/2 = 32.2 y) was generated by activation of weapons material during a few "clean" nuclear tests at the U.S. Western Pacific Proving Grounds of Enewetak and Bikini Atolls. TheExpand
Lead-210 Production by Nuclear Devices: 1946–1958
THE possible production of 210Pb during weapons testing by the reaction 208Pb (2n,γ) 210Pb was suggested by Peirson. et al.1, who observed unusually high ratios of 210Pb in tropospheric air in 1962Expand
On contamination of Bi4Ge3O12 single crystals with 207Bi isotope
Two versions of generation of 207Bi radionuclide are known from the literature: natural phenomena (cosmic rays) and technogenic factors (high-power nuclear weapons tests). The amounts of theExpand


Semiempirical atomic mass law
Abstract New terms are proposed for the atomic mass law which incorporate effects of nuclear deformation and shell structure including interference effects between unfilled neutron and proton shells.Expand