Second minimum lifetime measurements in sup 133 Nd and sup 137 Nd

Journal Article · Mon Jun 01 04:00:00 EDT 1992 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.45.2683· OSTI ID:7183495

Mullins, S M; Jenkins, I; He, Y; Kirwan, A J; Nolan, P J ^[1]; Hughes, J R; Wadsworth, R ^[2]; Wyss, R A ^[3]

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1. Oliver Lodge Laboratory, University of Liverpool, P.O. Box 147, Liverpool L693BX (United Kingdom)
2. Department of Physics, University of York, Heslington, York Y015DD (United Kingdom)
3. Joint Institute for Heavy Ion Research, Oak Ridge National Laboratory, P. O. Box 2008, Oak Ridge, Tennessee 37831 (United States)

The quadrupole moments ({ital Q}{sub 0}) of the highly deformed, second minimum bands in {sup 133}Nd and {sup 137}Nd have been extracted from mean lifetime measurements using the Doppler shift attenuation method. The reactions {sup 105}Pd({sup 32}S,2{ital p}2{ital n}){sup 133}Nd at 152 MeV and {sup 104}Ru({sup 36}S,3{ital n}){sup 137}Nd at 145 MeV were used. A standard centroid shift analysis was carried out in both cases, which gave values of {ital Q}{sub 0}=(6.0{plus minus}0.7){ital e} b and (4.0{plus minus}0.5){ital e} b for {sup 133}Nd and {sup 137}Nd, respectively, corresponding to axial prolate deformations of {beta}{sub 2}{congruent}0.33 and {congruent}0.22. A line-shape analysis was also carried out for {sup 133}Nd to check against the possible effect of sidefeeding. The result was {ital Q}{sub 0}=(6.7+0.7){ital e} b, with sightly slower sidefeeding times corresponding to {ital Q}{sub s{bar f}}{congruent}5.3{ital e} b. The results are in good agreement with the predictions of total Routhian surface calculations, and are discussed in the context of other highly deformed bands in the {ital A}=130--140 mass region.

• OSTI ID: 7183495
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 45:6; ISSN 0556-2813; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
COLLECTIVE EXCITATIONS
COUNTING TECHNIQUES
DEFORMED NUCLEI
DOPPLER EFFECT
DSA METHOD
ELECTRON CAPTURE RADIOISOTOPES
ENERGY-LEVEL TRANSITIONS
EVEN-ODD NUCLEI
EXCITATION
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LIFETIME
MINUTES LIVING RADIOISOTOPES
NEODYMIUM 133
NEODYMIUM 137
NEODYMIUM ISOTOPES
NUCLEI
QUADRUPOLE MOMENTS
RADIOISOTOPES
RARE EARTH NUCLEI
SECO