Collective excitations in /sup 158/Dy as populated in radioactive decay of /sup 158/Ho/sup g/,m

Journal Article · Sat Jul 01 04:00:00 EDT 1978 · Phys. Rev., C; (United States)

DOI:https://doi.org/10.1103/PhysRevC.18.383· OSTI ID:6821923

Anderson, D L; Brenner, D S; Meyer, R A

The levels of /sup 158/Dy populated in the decay of 11-min /sup 158/Ho/sup g/ and 28-min /sup 158/Ho/sup m/ in equilibrium with 2.3-h /sup 158/Er have been studied using singles Ge(Li) detectors, a Compton-suppression spectrometer and a Ge(Li) -Ge(Li) coincidence spectrometer. We firmly establish K = 0 one-phonon ..beta..-vibrational, K = 2 one-phonon ..gamma..-vibrational, K = 2 two-phonon (..beta.. + ..gamma..) vibrational, and K = 4 two-quasineutron bands with new ..gamma..-ray singles, coincidence, and multipolarity evidence. Members of the K = 0, 1, 2, and 3 octupole vibrational bands are identified and compared to theoretical calculations. One-phonon octupole vibrational bands are proposed with the following assignments I/sup ..pi../(keV): K = 0: 1/sup -/(1608.0), 3/sup -/(1671.8), 5/sup -/(1818.7); K = 1: 1/sup -/(1441.7), 2/sup -/(1501.1), 3/sup -/(1513.6), 4/sup -/(1618.4), 5/sup -/(1634.5); K = 2: 2/sup -/(1371.7), 3/sup -/(1397.2), 4/sup -/(1518.5), 5/sup -/(1528.1); and K = 3: 3/sup -/(2409.6). A limiting value rho > or = 0.09 has been measured for the monopole matrix element of the 990.6-keV ..beta.. vibration and a new low-lying 0/sup +/ state is reported at 1710.2 keV which may have collective character.

• Research Organization: Jeppson Laboratory, Clark University, Worcester, Massachusetts 01610
• OSTI ID: 6821923
• Journal Information: Phys. Rev., C; (United States), Journal Name: Phys. Rev., C; (United States) Vol. 18:1; ISSN PRVCA
• Country of Publication: United States
• Language: English

Related Subjects

651822 -- Nuclear Properties & Reactions
A=150-189
Experimental-- Radioactive Decay-- (-1987)
651823* -- Nuclear Properties & Reactions
A=150-189
Experimental-- Energy Levels & Transitions-- (-1987)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR MOMENTUM
BASIC INTERACTIONS
BETA DECAY
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY
BETA-PLUS DECAY RADIOISOTOPES
COLLECTIVE EXCITATIONS
DECAY
DYSPROSIUM 158
DYSPROSIUM ISOTOPES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITED STATES
FT VALUE
GAMMA SPECTRA
HOLMIUM 158
HOLMIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOTOPES
LEPTONIC DECAY
NUCLEI
ODD-ODD NUCLEI
PARITY
PARTICLE DECAY
PARTICLE PROPERTIES
RADIOISOTOPES
RARE EARTH ISOTOPES
RARE EARTH NUCLEI
SPECTRA
SPIN
STABLE ISOTOPES
VIBRATIONAL STATES
WEAK INTERACTIONS
WEAK PARTICLE DECAY