Decay of /sup 100/Sr and a ''pairing-free'' K/sup π/ = 1+ rotational band in odd-odd /sup 100/Y
Creators
- 1. Ames Laboratory and Iowa State University, Ames, Iowa 50011
Description
The decay of /sup 100/Sr (193 ms) to the low-spin /sup 100/Y isomer (735 ms) was studied from mass-separated activity produced in thermal neutron fission of /sup 235/U. γ singles and γ-γ coincidence measurements resulted in the placement of 67 γ transitions in a decay scheme with 26 levels below 2 Mev. The multipolarities of low-energy transitions were determined from internal conversion electron measurements. Logft values were deduced using an absolute γ-ray intensity determination for the A = 100 decay chain. The 1+ levels in /sup 100/Y at 10.70 and 974.61 keV each receive --40% of the β feeding from /sup 100/Sr. A K/sup π/ = 1+ rotational band (with 1+, 2+, and 3+ levels at 10.70, 76.15, and 172.03 keV) is proposed which can be characterized as a nearly ''pairing-free'' band. Other levels in /sup 100/Y are discussed in terms of two-quasiparticle Nilsson orbitals
Additional details
Publishing Information
- Journal Title
- Phys. Rev., C
- Journal Volume
- 36
- Journal Issue
- 3
- Series
- Phys. Rev., C.
- Journal Page Range
- 1118-1128
- ISSN
- 0556-2813
- CODEN
- PRVCA
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 18093255
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Resource subtype / Literary indicator
- Numerical Data
- Descriptors DEI
- BETA-MINUS DECAY; COINCIDENCE SPECTROMETRY; DEFORMED NUCLEI; ENERGY LEVELS; ENERGY-LEVEL TRANSITIONS; EXPERIMENTAL DATA; FT VALUE; GAMMA RADIATION; HALF-LIFE; INTERNAL CONVERSION; MULTIPOLARITY; NEUTRON REACTIONS; NILSSON-MOTTELSON MODEL; PARITY; QUASI PARTICLES; ROTATIONAL STATES; SPIN; STRONTIUM 100; THERMAL FISSION; URANIUM 235 TARGET; YTTRIUM 100
- Descriptors DEC
- ANGULAR MOMENTUM; BARYON REACTIONS; BETA DECAY; BETA DECAY RADIOISOTOPES; BETA-MINUS DECAY RADIOISOTOPES; COINCIDENCE METHODS; CONVERSION; COUNTING TECHNIQUES; DATA; DECAY; ELECTROMAGNETIC RADIATION; EVEN-EVEN NUCLEI; EXCITED STATES; FISSION; HADRON REACTIONS; INFORMATION; INTERMEDIATE MASS NUCLEI; IONIZING RADIATIONS; ISOTOPES; MATHEMATICAL MODELS; MILLISEC LIVING RADIOISOTOPES; NUCLEAR DECAY; NUCLEAR MODELS; NUCLEAR REACTIONS; NUCLEI; NUCLEON REACTIONS; NUMERICAL DATA; ODD-ODD NUCLEI; PARTICLE PROPERTIES; RADIATIONS; RADIOISOTOPES; STRONTIUM ISOTOPES; TARGETS; YTTRIUM ISOTOPES