Gamma-ray spectra and positive parity bands in $sup 158$Gd

Journal Article · Sun Dec 31 23:00:00 EST 1972 · Nucl. Phys., A, v. A217, no. 2, pp. 410-419

OSTI ID:4380995

White, D H; Siddiqi, T A

A Ge(Li)--NaI(Tl) pair spectrometer and a Ge(Li) --NaI(Tl) anti-Compton spectrometer were used to measure gamma -rays from the reaction /sup157/Gd(n, gamma )/sup 158/ Gd. A detailed decay scheme for levels of /sup 158/Gd was constructed up to an excitation energy of 2504 keV. Branching ratios for transitions from members of the positive parity bands to members of the ground state band were determined. It is shown that a single band-mixing parameter is not sufficient to explain the experimental results, and that even a four-band- mixing calculation does not provide satisfactory agreement. The binding energy of the last neutron is determined to be 7937.4 plus or minus 0.7 keV. (auth)

• Research Organization: Univ. of California, Berkeley
• NSA Number: NSA-29-011512
• OSTI ID: 4380995
• Journal Information: Nucl. Phys., A, v. A217, no. 2, pp. 410-419, Journal Name: Nucl. Phys., A, v. A217, no. 2, pp. 410-419; ISSN NUPAB
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*GADOLINIUM 157-- NEUTRON REACTIONS
*NEUTRON REACTIONS-- CAPTURE
BRANCHING RATIO
ENERGY-LEVEL TRANSITIONS
GAMMA SPECTRA
N68831* --Physics (Nuclear
Experimental)--Nuclear Properties & Reactions
150 <= A <= 189--Energy Levels & Transitions
N68851 --Physics (Nuclear
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150 <= A <= 189--Nuclear Reactions & Scattering
NUCLEAR ELECTRIC MOMENTS
PARITY
PROBABILITY
QUADRUPOLE MOMENTS
SPIN
THERMAL NEUTRONS