Fragmentation of Gamow-Teller strength observed in 117,120Sn(3He,t)117,120Sb charge-exchange reactions
Creators
- 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)
Description
The (3He,t) charge-exchange reaction has been studied at E(3He)=200 MeV and angles near 0 degree on targets of 117Sn and 120Sn. 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 θ=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 1h11/2 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 117Sb and 120Sb exceed the predicted splittings
Additional details
Publishing Information
- Journal Title
- Physical Review. C, Nuclear Physics
- Journal Volume
- 48
- Journal Issue
- 6
- Journal Page Range
- p. 2828-2839.
- ISSN
- 0556-2813
- CODEN
- PRVCAN
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25024044
- Subject category
- S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS; S73: NUCLEAR PHYSICS AND RADIATION PHYSICS;
- Descriptors DEI
- ANTIMONY 117; ANTIMONY 120; CHARGE-EXCHANGE REACTIONS; CROSS SECTIONS; FRAGMENTATION; GAMOW-TELLER RULES; HELIUM 3 REACTIONS; MEV RANGE 100-1000; RESONANCE; SPIN FLIP; TIN 117 TARGET; TIN 120 TARGET; TRITONS
- Descriptors DEC
- ANTIMONY ISOTOPES; BETA DECAY RADIOISOTOPES; BETA-PLUS DECAY RADIOISOTOPES; CHARGED PARTICLES; 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 NUCLEI; ODD-ODD NUCLEI; RADIOISOTOPES; TARGETS