On the interplay between allowed Gamow-Teller and Isovector Spin Monopole (IVSM) excitations

Journal Article · Fri Dec 16 00:00:00 EST 2011 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3671030· OSTI ID:22003971

Bes, D R ^[1]; Civitarese, O ^[2]; Suhonen, J ^[3]

---

1. Dept of Physics. Lab.Tandar, CAC-CNEA. Avda Gral Paz 1499, 1650 Gral San Martin (Argentina)
2. Dept of Physics, University of La Plata, c.c.67 1900, La Plata (Argentina)
3. Dept of Physics, University of Jyvaeskylae, P.O. Box 35, FI-40014, Jyvaeskylae (Finland)

The excitation of Gamow-Teller (GT) and Isovector Spin Monopole (IVSM) modes in {sup 116}In by (p,n) and (n,p)) charge-exchange reactions is studied within the framework of the Quasiparticle Random-phase Approximation. It is shown that the admixture of the IVSM and Gamow-Teller (GT) excitations is negligible, and that the contribution to the strength above 20 MeV excitation energy, in {sup 116}In, is, most likely, due to the IVSM ({sigma}r{sup 2}{tau}{sup {+-}}) mode.

• OSTI ID: 22003971
• Journal Information: AIP Conference Proceedings, Vol. 1417, Issue 1; Conference: MEDEX '11: Workshop on calculation of double-beta-decay matrix elements, Prague (Czech Republic), 13-16 Jun 2011; Other Information: (c) 2011 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
BETA DECAY
CHARGE EXCHANGE
CHARGE-EXCHANGE REACTIONS
EXCITATION
GAMOW-TELLER RULES
GIANT RESONANCE
ISOVECTORS
MEV RANGE
NEUTRON REACTIONS
NEUTRONS
PROTON REACTIONS
PROTONS
QUASI PARTICLES
RANDOM PHASE APPROXIMATION
SPIN