Harvesting krypton isotopes from the off-gas of an irradiated water target to generate ⁷⁶Br and ⁷⁷Br.

ABSTRACT: A flowing-water target was irradiated with a 150 MeV/nucleon beam of ⁷⁸Kr at the National Superconducting Cyclotron Laboratory to produce ⁷⁷Kr and ⁷⁶Kr. Real-time gamma-imaging measurements revealed the mass transport of the krypton radioisotopes through the target-water processing, or "isotope harvesting", system. The production rates were determined to be 2.7(1) × 10^-4 nuclei of ⁷⁶Kr and 1.18(6) × 10^-2 nuclei of ⁷⁷Kr formed per incident ⁷⁸Kr ion. Utilizing an off-gas processing line as part of the isotope harvesting system, a total of 7.2(1) MBq of ⁷⁶Kr and 19.1(6) MBq of ⁷⁷Kr were collected in cold traps. Through the decay, the daughter radionuclides ⁷⁶Br and ^77<

SUBMITTER: Clause HK 

PROVIDER: S-EPMC8792061 | biostudies-literature | 2022 Jan

REPOSITORIES: biostudies-literature