Rotational bands near the [ital Z]=50 closed shell: [sub 51][sup 111]Sb

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

DOI:https://doi.org/10.1103/PhysRevC.50.1819· OSTI ID:6909425

LaFosse, D R; Fossan, D B; Hughes, J R; Liang, Y; Schnare, H; Vaska, P; Waring, M P; Zhang, J ^[1]; Clark, R M; Wadsworth, R ^[2]; Forbes, S A; Paul, E S ^[3]; Janzen, V P; Galindo-Uribarri, A; Radford, D C; Ward, D ^[4]; Mullins, S M; Prevost, D ^[5]; Zwartz, G ^[6]

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1. Department of Physics, State University of New York at Stony Brook, Stony Brook, New York 11794 (United States)
2. Department of Physics, University of York, Heslington, York YO15DD (United Kingdom)
3. Oliver Lodge Laboratory, University of Liverpool, P. O. Box 147, Liverpool L693BX (United Kingdom)
4. AECL Research, Chalk River Laboratories, Chalk River, Ontario, K0J1J0 (Canada)
5. Department of Physics and Astronomy, McMaster University, Hamilton, Ontario, L8S4M1 (Canada)
6. Department of Physics, University of Toronto, Ontario, M5S1A7 (Canada)

Rotational states have been identified in [sup 1][sub 51][sup 11]Sb for the first time. Three decoupled ([Delta][ital I]=2) bands extending to over 1 MeV in rotational frequency have been observed. At the highest frequencies, the [ital scrJ][sup (2)] moments of inertia for these three bands are seen to decrease steadily to unexpectedly low values; this is interpreted as evidence for a novel form of band termination. One of these bands is interpreted as being based on the [pi][ital h][sub 11/2] orbital coupled to a deformed [([pi][ital g][sub 9/2])[sup [minus]2][direct product]([pi][ital g][sub 7/2])][sub 0+] state of the [sup 1][sub 50][sup 10]Sn core. The interaction strength for the alignment of a pair of [ital h][sub 11/2] neutrons has been extracted and compared with calculations. Two possible quasiparticle configurations are discussed for the other decoupled bands. Two strongly coupled ([Delta][ital I]=1) bands have been identified and both shown to involve the [([pi][ital g][sub 9/2])[sup [minus]1][direct product]([pi][ital g][sub 7/2])[sup 2]] configuration. A large number of spherical states have also been observed, which can be explained on the basis of valence protons coupled to spherical states in the [sup 110]Sn core.

• OSTI ID: 6909425
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 50:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

663110* -- General & Average Properties of Nuclei & Nuclear Energy Levels-- (1992-)
663220 -- Electromagnetic Transitions-- (1992-)
663560 -- Nuclear Mass Ranges-- A=90-149-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANTIMONY 111
ANTIMONY ISOTOPES
BARYONS
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
COLLECTIVE EXCITATIONS
DEFORMATION
ELECTRON CAPTURE RADIOISOTOPES
ELEMENTARY PARTICLES
ENERGY LEVELS
ENERGY-LEVEL TRANSITIONS
EVEN-EVEN NUCLEI
EXCITATION
EXCITED STATES
FERMIONS
GAMMA SPECTROSCOPY
HADRONS
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOTOPES
MINUTES LIVING RADIOISOTOPES
MOMENT OF INERTIA
NEUTRONS
NUCLEAR DEFORMATION
NUCLEI
NUCLEONS
ODD-EVEN NUCLEI
QUASI PARTICLES
RADIOISOTOPES
ROTATIONAL STATES
SPECTROSCOPY
TIN 110
TIN ISOTOPES