One- and two-nucleon transfer reactions to {sup 196}Au

Journal Article · Thu Jul 01 04:00:00 EDT 2004 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.70.014610· OSTI ID:20695604

Wirth, H -F; Graw, G; Eisermann, Y; Gollwitzer, A; Hertenberger, R; Metz, A; Valnion, B D ^[1]; Christen, S; Jolie, J; Moeller, O; Tonev, D ^[2]

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1. Sektion Physik, Ludwig-Maximilians-Universitaet Muenchen, D-85748 Garching (Germany)
2. Institut fuer Kernphysik, Universitaet zu Koeln, D-50937 Cologne (Germany)

To provide information for comparison with predictions from a dynamical supersymmetry, the odd-odd nucleus {sup 196}Au was studied via transfer reactions. With a polarized deuteron beam we measured (d-vector,t) and (d-vector,{alpha}), and with unpolarized beams we measured (p,d) ({sup 3}He,d), and ({alpha},d) transfer reactions. From the high-resolution {sup 197}Au(p,d){sup 196}Au spectrum, a rather complete set of excitation energies was obtained. Quantum numbers and spectroscopic factors were obtained from angular distributions of single-neutron transfer in {sup 197}Au(d-vector,t){sup 196}Au, single-proton transfer in {sup 195}Pt({sup 3}He,d){sup 196}Au, and two-nucleon transfer {sup 198}Hg(d-vector,{alpha}){sup 196}Au. We obtain firm J{sup {pi}} assignments for 21 out of the 27 states with negative parity observed up to 490 keV excitation energy, by combining our data with that taken using {gamma}{gamma} and conversion electron spectroscopy. The number of states and the firm or restricted assignments are in agreement with the predictions from the dynamical U{sub {nu}}(6/12)xU{sub {pi}}(6/4) supersymmetric scheme. Including our ({alpha},d) data, we can deduce spectroscopic factors for four different transfer channels. When model predictions of spectroscopic factors become available, these data will provide a further critical test as to what extent this symmetry is realized in nature.

• OSTI ID: 20695604
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 1 Vol. 70; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ANGULAR DISTRIBUTION
COMPARATIVE EVALUATIONS
CONVERSION
DEUTERON BEAMS
DEUTERON REACTIONS
ELECTRON SPECTRA
ELECTRON SPECTROSCOPY
EXCITATION
GAMMA SPECTRA
GOLD 196
GOLD 197 TARGET
HELIUM 3 REACTIONS
NEUTRON TRANSFER
NEUTRONS
PARITY
PLATINUM 195 TARGET
POLARIZATION
POLARIZED BEAMS
PROTON-NUCLEON INTERACTIONS
QUANTUM NUMBERS
SPECTROSCOPIC FACTORS
SPIN
SUPERSYMMETRY
TWO-NUCLEON TRANSFER REACTIONS