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Radiative neutron capture and isomeric transition isotope effects in bromine reactions with liquid cyclohexane and carbon tetrachloride: a re-evaluation

Journal Article · · Radiochem. Radioanal. Lett., v. 16, no. 6, pp. 289-301
OSTI ID:4340182
; ;
BS>Several experimental techniques, including changing the phase of the sample after irradiation, use of the freeze-thaw method, immediate extraction, and extraction as a function of time from the liquid or solid state were used to re-evaluate the radiative neutron capture organic yields of /sup 80/Br, /sup 80m/ Br, and /sup 82m+82g/Br a nd the /sup 82/Br isomeric transition organic yields in liquid cyclohexane and in carbon tetrachloride. It was concluded that under the conditions studied there was no observable isotope effect within experimental error between (n, gamma )-activated yields of /sup 80/Br, /sup 80m/Br, or /sup 82m+82g/Br, and (IT-)-activated /sup 82/Br. The lack of an (n, gamma ) isotope effect and the similarity of the organic yields by the two activation process suggest a mechanism or mechanisms involving caging reactions. (auth)
Research Organization:
Univ. of Nebraska, Lincoln
NSA Number:
NSA-29-026701
OSTI ID:
4340182
Journal Information:
Radiochem. Radioanal. Lett., v. 16, no. 6, pp. 289-301, Journal Name: Radiochem. Radioanal. Lett., v. 16, no. 6, pp. 289-301; ISSN RRALA
Country of Publication:
Country unknown/Code not available
Language:
English

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Related Subjects

*BROMINE 80-- HOT ATOM CHEMISTRY
*BROMINE 82-- ISOTOPE EFFECTS
*CARBON TETRACHLORIDE-- HOT ATOM CHEMISTRY
*CYCLOHEXANE-- HOT ATOM CHEMISTRY
*TETRACHLOROMETHANE-- HOT ATOM CHEMISTRY
CAPTURE
CHEMICAL REACTION KINETICS
ISOMERIC NUCLEI
ISOMERIC TRANSITIONS
N40220 --Chemistry--Inorganic
Organic
& Physical Chemistry--Isotopic Effects
N40410* --Chemistry--Radiochemistry & Nuclear Chemistry--Hot Atom Chemistry
N40420 --Chemistry--Radiochemistry & Nuclear Chemistry--Properties of Radioactive Materials
NEUTRON BEAMS