Nuclear structure of {sup 146}Nd from (n,n`{gamma}) measurements

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

OSTI ID:141220

DiPrete, D P; Baum, E M; Johnson, E L; McGrath, C A; Cross, L R; Wang, D; Villani, M; Yates, S W ^[1]

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1. Univ. of Kentucky, Lexington, KY (United States)

The nucleus {sup 146}Nd has been studied with the inelastic neutron scattering (INS) reaction followed by {gamma}-ray detection, and level lifetimes were determined in Doppler-shift attenuation (DSAM-INS) measurements. These experiments were partially inspired by the erratic behavior of E1 transition rates observed in this mass region. In previous studies of N=82 isotones, it has been suggested that enhanced electric dipole transitions occur, whereas the B(E1)`s in the N=90 nucleus {sup 146}Ba have been found to be quite weak. In addition, these measurements were performed to obtain new information on mixed-symmetry states. While substantial work has already been performed on such states in {sup 144}Nd, little is known about such excitations in {sup 146}Nd. A third motivation for this work was to elucidate the nature of the low-lying 5 states in {sup 146}Nd. Recent inelastic proton scattering studies of this nucleus have thrown into question whether these states are of simple octupole parentage.

• OSTI ID: 141220
• Report Number(s): CONF-930304--
• Country of Publication: United States
• Language: English

Related Subjects

40 CHEMISTRY
66 PHYSICS
DSA METHOD
E1-TRANSITIONS
EXCITED STATES
GAMMA DETECTION
INELASTIC SCATTERING
NEODYMIUM 146
NUCLEAR CHEMISTRY
NUCLEAR PHYSICS
NUCLEAR STRUCTURE