Nuclear structure of [sup 109]Sb

Journal Article · Wed Jun 01 00:00:00 EDT 1994 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.49.2982· OSTI ID:7050352

Ishii, T; Makishima, A; Shibata, M; Ogawa, M; Ishii, M ^[1]

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1. Physics Division, Japan Atomic Energy Research Institute, Tokai-mura, Ibaraki-ken (Japan) Center for Radioisotope Science, National Defense Medical College, Tokorozawa, Saitama-ken (Japan) Department of Energy Sciences, Tokyo Institute of Technology, Midori-ku, Yokohama (Japan)

This is the first report on nuclear structure of [sup 109]Sb. Excited states up to [ital I][sup [pi]]=27/2[sup +] and 35/2[sup [minus]] have been established using the reaction [sup 54]Fe([sup 58]Ni, 3[ital p])[sup 109]Sb and in-beam techniques. According to the particle(hole)-core coupling scheme these excited states were classified into five bands: three are based on the [pi][ital d][sub 5/2], [pi][ital g][sub 7/2], and [pi][ital h][sub 11/2] states; the other two are the [Delta][ital I]=1 collective bands built on the 17/2[sup +] state at 2651 keV and the 23/2[sup [minus]] state at 4487 keV. The 11/2[sup +][r arrow]9/2[sup +] transition in the [pi][ital g][sub 7/2] band possesses an [ital E]2/[ital M]1 mixing ratio [delta][gt]0, which suggests admixing of the [pi][ital g][sub 9/2] hole state. Positive mixing ratios observed in the collective bands indicate a prolate deformation due to the ([pi][ital g][sub 9/2])[sup [minus]1] core excitation. In the [pi][ital h][sub 11/2] band, [ital B]([ital M]1;23/2[sup [minus]][r arrow]21/2[sup [minus]]) was measured to be 0.040(3) W.u. Furthermore the 27/2[sup [minus]][r arrow]25/2[sup [minus]] transition was too weak for a proton [ital M]1 transition. These transitions are retarded by the [nu][ital h][sub 11/2] configurations mixed in the involved states.

• OSTI ID: 7050352
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 49:6; ISSN 0556-2813; ISSN PRVCAN
• 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
ANTIMONY
BARYONS
CHARGED-PARTICLE REACTIONS
COLLECTIVE EXCITATIONS
DEFORMATION
E2-TRANSITIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EXCITATION
FERMIONS
HADRONS
HEAVY ION REACTIONS
IN-BEAM SPECTROSCOPY
IRON 54 TARGET
M1-TRANSITIONS
MATHEMATICAL MODELS
METALS
MULTIPOLE TRANSITIONS
NICKEL 58 REACTIONS
NUCLEAR DEFORMATION
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEAR STRUCTURE
NUCLEONS
PROTONS
SHELL MODELS
SPECTROSCOPY
TARGETS