Isomer spectroscopy of {sup 127}Cd

Journal Article · Wed Sep 15 00:00:00 EDT 2010 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.82.034323· OSTI ID:21421035

Naqvi, F ^[1]; Helmholtzzentrum fuer Schwerionenforschung, D-64291 Darmstadt ^[2]; Gorska, M; Grawe, H; Beck, T; Doornenbal, P; Geissel, H; Gerl, J; Kojouharov, I; Kurz, N; Montes, F; Prokopowicz, W; Schaffner, H; Tashenov, S; Wollersheim, H J ^[3]; Caceres, L ^[3]; Jungclaus, A ^[4]; Pfuetzner, M; Werner-Malento, E ^[5]; Nowacki, F ; Sieja, K ^[6]

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1. Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Koeln (Germany)
2. GSI; Germany
3. Helmholtzzentrum fuer Schwerionenforschung (GSI), D-64291 Darmstadt (Germany)
4. Instituto de Estructura de la Materia, CSIC, E-28006 Madrid (Spain)
5. Faculty of Physics, University of Warsaw, PL-00681 Warsaw (Poland)
6. IPHC, IN2P3-CNRS/Universite Louis Pasteur, F-67037, Strasbourg (France)

The spin and configurational structure of excited states of {sup 127}Cd, the two-proton and three-neutron hole neighbor of {sup 132}Sn, has been studied. An isomeric state with a half-life of 17.5(3) {mu}s was populated in the fragmentation of a {sup 136}Xe beam on a {sup 9}Be target at a beam energy of 750 MeV/u. Time distributions of the delayed {gamma} transitions and {gamma}{gamma} coincidence relations were exploited to construct a decay scheme. The observed yrast (19/2){sup +} isomer is proposed to have dominant configurations of {nu}(h{sub 11/2}{sup -3}){pi}(g{sub 9/2}{sup -1},p{sub 1/2}{sup -1}), {nu}(h{sub 11/2}{sup -2}d{sub 3/2}{sup -1}){pi}(g{sub 9/2}{sup -2}), and {nu}(h{sub 11/2}{sup -2},s{sub 1/2}{sup -1}){pi}(g{sub 9/2}{sup -2}) and to decay by two competing stretched M2 and E3 transitions. Experimental results are compared with the isotone {sup 129}Sn. The new information provides input for the proton-neutron interaction and the evolution of neutron hole energies in nuclei around the doubly magic {sup 132}Sn core.

• OSTI ID: 21421035
• Journal Information: Physical Review. C, Nuclear Physics, Vol. 82, Issue 3; Other Information: DOI: 10.1103/PhysRevC.82.034323; (c) 2010 The American Physical Society; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BEAMS
BERYLLIUM 9 TARGET
CADMIUM 127
COINCIDENCE METHODS
DISTRIBUTION
E3-TRANSITIONS
EXCITED STATES
FRAGMENTATION
HALF-LIFE
ISOMERS
M2-TRANSITIONS
MEV RANGE 100-1000
NEUTRONS
NUCLEAR DECAY
NUCLEAR STRUCTURE
PROTON-NEUTRON INTERACTIONS
PROTONS
SPECTROSCOPY
SPIN
TIN 129
TIN 132
XENON 136
ANGULAR MOMENTUM
BARYON-BARYON INTERACTIONS
BARYONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CADMIUM ISOTOPES
COUNTING TECHNIQUES
DECAY
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY RANGE
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
FERMIONS
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEV RANGE
MILLISECONDS LIVING RADIOISOTOPES
MINUTES LIVING RADIOISOTOPES
MULTIPOLE TRANSITIONS
NUCLEI
NUCLEON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE PROPERTIES
PROTON-NUCLEON INTERACTIONS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
STABLE ISOTOPES
TARGETS
TIN ISOTOPES
XENON ISOTOPES