Fragmentation of Gamow-Teller strength observed in [sup 117,120]Sn([sup 3]He,[ital t])[sup 117,120]Sb charge-exchange reactions

Journal Article · Wed Dec 01 00:00:00 EST 1993 · Physical Review, C (Nuclear Physics); (United States)

DOI:https://doi.org/10.1103/PhysRevC.48.2828· OSTI ID:5801294

Jaenecke, J; Pham, K; Roberts, D A; Stewart, D ^[1]; Harakeh, M N ^[2]; Berg, G P.A.; Foster, C C; Lisantti, J E; Sawafta, R; Stephenson, E J ^[3]; van den Berg, A M; van der Werf, S Y ^[4]; Muraviev, S E; Urin, M H ^[5]

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1. Department of Physics, University of Michigan, Ann Arbor, Michigan 48109 (United States)
2. Faculteit Natuurkunde en Sterrenkunde, Vrije Universiteit, 1081 HV Amsterdam (Netherlands)
3. Indiana University Cyclotron Facility, Bloomington, Indiana 47405 (United States)
4. Kernfysisch Versneller Instituut, 9747 AA Groningen (Netherlands)
5. Engineering Physics Institute, 115 409 Moscow (Russian Federation)

The ([sup 3]He,[ital t]) charge-exchange reaction has been studied at [ital E]([sup 3]He)=200 MeV and angles near 0[degree] on targets of [sup 117]Sn and [sup 120]Sn. Fragmentation of the giant Gamow-Teller resonance into separate components of the particle-hole type has been observed in good agreement with theoretical predictions. These components are connected with what is usually referred to in the literature as direct-, core-polarization-, and back-spin-flip Gamow-Teller strength. The observed cross sections near [theta]=0[degree] suggest contributions from the isovector spin-flip interaction as well as the isovector tensor interaction. A theoretically predicted configuration splitting of the main Gamow-Teller component into two components involving the 1[ital h][sub 11/2] neutron orbital could not uniquely be identified. The data are compatible, though, with such a splitting since the observed widths of the main Gamow-Teller components in [sup 117]Sb and [sup 120]Sb exceed the predicted splittings.

• OSTI ID: 5801294
• Journal Information: Physical Review, C (Nuclear Physics); (United States), Vol. 48:6; ISSN 0556-2813
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
HELIUM 3 REACTIONS
CHARGE-EXCHANGE REACTIONS
FRAGMENTATION
TIN 117 TARGET
TIN 120 TARGET
ANTIMONY 117
ANTIMONY 120
CROSS SECTIONS
GAMOW-TELLER RULES
MEV RANGE 100-1000
RESONANCE
SPIN FLIP
TRITONS
ANTIMONY ISOTOPES
BETA DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CHARGED PARTICLES
CHARGED-PARTICLE REACTIONS
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY RANGE
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MEV RANGE
MINUTES LIVING RADIOISOTOPES
NANOSEC LIVING RADIOISOTOPES
NUCLEAR REACTIONS
NUCLEI
ODD-EVEN NUC
ODD-ODD NUCLEI
RADIOISOTOPES
TARGETS
663440* - D-
T-
& He-induced Reactions & Scattering- (1992-)
663560 - Nuclear Mass Ranges- A=90-149- (1992-)
663300 - Nuclear Reactions & Scattering
General- (1992-)