Production of {sup 68}Ge, {sup 73,74}As, and {sup 72,75}Se at LAMPF

Conference · Fri Dec 31 04:00:00 EST 1993

OSTI ID:141185

Phillips, D R; Hamilton, V T; Taylor, W A; Jamriska, D J; Staroski, R C; Heaton, R C ^[1]

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1. Los Alamos National Laboratory, NM (United States)

Rubidium bromide targets have been irradiated for many years at the Los Alamos Meson Physics Facility for the primary purpose of producing {sup 68}Ge/{sup 68}Ga. The spallation process in these targets produces numerous other radioisotopes including arsenic and selenium nuclides. The recovery process for the Ge-68 involves distillation from a target dissolved in high molarity HCl. Under the conditions of the distillation arsenic and selenium isotopes distill with the germanium. The germanium is separated from these isotopes by extraction methods. It has been found that addition of a reducing agent to the target solution prior to distillation leads to quantitative precipitation of the selenium in the original distillation flask. Thus the distillate contains only the germanium and arsenic isotopes. After the extraction process, separate radiochemically pure fractions of germanium and arsenic are recovered. The selenium is recovered by filtration and redissolution. Details of this recovery process will be presented.

• OSTI ID: 141185
• Report Number(s): CONF-930304--
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
66 PHYSICS
ARSENIC 73
ARSENIC 74
ARSENIC ISOTOPES
DISTILLATION
EXTRACTION
GERMANIUM 68
ISOTOPE PRODUCTION
ISOTOPE SEPARATION
LAMPF LINAC
NUCLEAR CHEMISTRY
RADIOCHEMISTRY
RUBIDIUM BROMIDES
SELENIUM 72
SELENIUM 75
SELENIUM ISOTOPES
SPALLATION FRAGMENTS