Spin determination of valence and inner hole states via the [sup 208]Pb([ital [rvec d]],[ital t])[sup 207]Pb reaction at [ital E][sub [ital d]]=200 MeV

Journal Article · Thu Apr 01 04:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.47.1571· OSTI ID:6643476

Langevin-Joliot, H; van de Wiele, J; Guillot, J; Gerlic, E; Rosier, L H; Willis, A; Morlet, M; Duhamel-Chretien, G; Tomasi-Gustafsson, E; Blasi, N; Micheletti, S; van der Werf, S Y ^[1]

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1. Institut de Physique Nucleaire; Institut National de Physique Nucleaire et de Physique des Particules; Centre National de la Recherche Scientifique; Boite Postale No. 1; 91406 Orsay (France) Institut des Sciences Nucleaires; Institut National de Physique Nucleaire et de Physique des Particules; Centre National de la Recherche Scientifique; 53 avenue des Martyrs; 38026 Grenoble (France) Institut de Physique Nucleaire; Institut National de Physique Nucleaire et de Physique des Particules; Centre National de la Recherche Scientifique; 43 boulevard du 11 Novembre; 69622 Lyon; Villeurbanne (France) Laboratoire National Saturne; Centre d'Etudes Nucleaires Saclay; F-91191; Gif-sur-Yvette CEDEX (France) Istituto Nazionale di Fisica Nucleare and University of Milan; Physics Department; via Celoria 16; 2

Highly excited neutron hole states in [sup 207]Pb have been studied via the ([ital [rvec d]],[ital t]) reaction at [ital E][sub [ital d]]=200 MeV using for the first time a polarized beam, with both vector and tensor components. The determination of overlapping neutron hole response functions takes advantage of the strong characteristic features of [ital j][sub [minus]]=[ital l][minus]1/2 versus [ital j][sub +]=[ital l]+1/2 level analyzing powers and of the good distorted wave Born approximation (DWBA) description of the reaction. A least-squares fit analysis of the [sigma], [ital A][sub [ital y]], and [ital A][sub [ital y][ital y]] angular distributions has allowed a determination of the high [ital j] transition spectroscopic factors contributing to the excitation energy bins up to [ital E][sub [ital x]]=14.5 MeV. The results are compared in details with those relying only on [ital l] identification, previously obtained in the 1[ital i][sub 13/2] and 1[ital h][sub 9/2] valence state fragmentation up to [ital E][sub [ital x]]=6.7 MeV and on the 1[ital h][sub 11/2] strength up to [similar to]10 MeV. Several previous conclusions are unambiguously confirmed, in particular, the attribution of the bump around [ital E][sub [ital x]]=8.2 MeV to the 1[ital h][sub 11/2] strength. In addition, the present experiment settles the attributions of several [ital j][sub [minus]] versus [ital j][sub +] valence groups and indicates that the 1[ital h][sub 9/2] strength is spread up to [similar to]10.8 MeV.

• OSTI ID: 6643476
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Journal Name: Physical Review, C (Nuclear Physics); (United States) Vol. 47:4; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

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663580 -- Nuclear Mass Ranges-- A=190-219-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANALYZING POWER
ANGULAR MOMENTUM
BEAMS
BORN APPROXIMATION
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DEUTERON REACTIONS
DIRECT REACTIONS
DWBA
ENERGY RANGE
EVEN-ODD NUCLEI
HEAVY NUCLEI
HOLES
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEAD 207
LEAD 208 TARGET
LEAD ISOTOPES
MATHEMATICAL MODELS
MEV RANGE
MEV RANGE 100-1000
MILLISEC LIVING RADIOISOTOPES
NUCLEAR MODELS
NUCLEAR REACTIONS
NUCLEI
OSCILLATION MODES
PARTICLE PROPERTIES
PICKUP REACTIONS
POLARIZED BEAMS
RADIOISOTOPES
SECONDS LIVING RADIOISOTOPES
SHELL MODELS
SINGLE-PARTICLE MODES
SPIN
STABLE ISOTOPES
TARGETS
TRANSFER REACTIONS
TRITONS