In-beam {gamma}-ray spectroscopy of {sup 240}U using the ({sup 18}O,{sup 16}O) reaction

Journal Article · Mon Aug 01 04:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.021301· OSTI ID:20698876

Ishii, T; Matsuda, M; Ichikawa, S ^[1]; Shigematsu, S; Kohno, T ^[2]; Asai, M ^[3]; Makishima, A ^[4]; Kaneko, J; Ogawa, M ^[5]; Hossain, I ^[6]

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1. Department of Materials Science, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195 (Japan)
2. Department of Energy Sciences, Tokyo Institute of Technology, Yokohama 226-8502 (Japan)
3. Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195 (Japan)
4. Department of Liberal Arts and Sciences, National Defense Medical College, Tokorozawa, Saitama 359-8513 (Japan)
5. Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Meguro, Tokyo 152-8550 (Japan)
6. Department of Physics, Seoul National University, Seoul 151-747 (Korea, Republic of)

In the two-neutron-transfer reaction of a 200-MeV {sup 18}O beam with a {sup 238}U target, deexcitation {gamma} rays in a neutron-rich nucleus of {sup 240}U were measured. The {gamma} rays in {sup 240}U were identified by taking coincidence with {sup 16}O, using Si {delta}E-E detectors. The kinetic energies of {sup 16}O particles allowed us to select the excitation energies of {sup 240}U below the neutron separation energy. The ground-state band and the K{sup {pi}}=0{sup -} octupole band of {sup 240}U were established up to 12{sup +} and 9{sup -}, respectively. The octupole-band head of {sup 240}U is about a hundred keV higher than those of {sup 236,238}U, suggesting that a secondary maximum of octupole correlations exists at N=144-146 in U isotopes.

• OSTI ID: 20698876
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 72; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CORRELATIONS
EXCITATION
GAMMA SPECTRA
GAMMA SPECTROSCOPY
GROUND STATES
HIGH SPIN STATES
KEV RANGE
KINETIC ENERGY
MEV RANGE
NEUTRON SEPARATION ENERGY
NEUTRON TRANSFER
NEUTRON-RICH ISOTOPES
OCTUPOLES
OXYGEN 16
OXYGEN 18 REACTIONS
PARITY
SPIN
TRANSFER REACTIONS
URANIUM 238 TARGET
URANIUM 240