The production of no carrier added arsenic radioisotopes in nuclear reactors

Abstract

The comparative advantages and drawbacks of some reactor-produced arsenic radioisotopes having favourable characteristics for their use as tracers are discussed. The study comprises their preparation based on: (a) capture reactions on germanium; (b) threshold reactions on germanium, selenium and bromine; (c) secondary reactions on germanium, induced by recoil protons and tritons produced by the action of neutrons on lithium. The recommended options for the production of relatively short half-life radionuclides are 77 As by capture on germanium or 76 As via (n,α) reaction on bromine, while two different ways are applicable for the production of 74 As, longer-lived radioisotope.

Guidelines for the preparation and isolation of Radionuclides produced with In-house Cyclotrons Bombardments

“…These could be inoculated into humans and animals due to the insignifi cant chemical tolerance, i.e. As 74 [11]. These could be utilised for radiochemical investigations in very little contents, (<0.01μmolar).…”

“…The commencement of a database for the invention and circulation of cyclotron fashioned CFSR asked for the growth of a number of actions which had not been beforehand described including the overviews of the amendments into published trials [11,18] and which were not utterly acceptable for the envisioned practice as of short chemical yield or a defi cient product purity. Moreover, the fairly scant data of cyclotron have also posed another challenge for the current study.…”