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Titolo:
Spin and isospin modes
Autore:
Suzuki, T; Sagawa, H;
Indirizzi:
Nihon Univ, Coll Humanities & Sci, Dept Phys, Setagaya Ku, Tokyo 156, Japan Nihon Univ Tokyo Japan 156 Sci, Dept Phys, Setagaya Ku, Tokyo 156, Japan Univ Aizu, Ctr Mat Sci, Fukushima 9658580, Japan Univ Aizu Fukushima Japan 9658580 Ctr Mat Sci, Fukushima 9658580, Japan
Titolo Testata:
ACTA PHYSICA HUNGARICA NEW SERIES-HEAVY ION PHYSICS
fascicolo: 1-3, volume: 13, anno: 2001,
pagine: 11 - 19
SICI:
1219-7580(2001)13:1-3<11:SAIM>2.0.ZU;2-R
Fonte:
ISI
Lingua:
ENG
Soggetto:
ISOBARIC ANALOG STATE; DIRECT PROTON DECAY; SHELL-MODEL; RESONANCES; STRENGTH; BI-208; NUCLEI;
Keywords:
shell model and HF plus TDA calculations; sum rule of the spin-dipole transitions; neutral current neutrino scattering; quenching of the Gamow-Teller mode;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Suzuki, T Nihon Univ, Coll Humanities & Sci, Dept Phys, Setagaya Ku, Sakurajosui 3-25-40, Tokyo 156, Japan Nihon Univ Sakurajosui 3-25-40 Tokyo Japan 156 Tokyo 156, Japan
Citazione:
T. Suzuki e H. Sagawa, "Spin and isospin modes", APH NS-HEAV, 13(1-3), 2001, pp. 11-19

Abstract

Sum rule, especially the energy-weighted sum rule (EWSR) of the spin-dipole transition strength is discussed, and the effects of the spin-orbit interaction as well as the kinetic energy term and the tenser interaction on thesplitting and distribution of the strength are investigated. Light nuclei such as C-12 and O-16 are studied by shell-model calculations including up to 3 (h) over barw space while HF+TDA is used for an analysis of Bi-208. Anapplication to neutral current neutrino scattering on O-16 from supernovaeheavy-flavor neutrinos is presented. For the Gamow-Teller mode, effects ofquenching and fragmentation of the strength by coupling to 2p-2h configurations are shown to be important. How large or small is the quenching of thestrength due to the Delta -h contributions is also studied. As an isospin mode, isospin dependence of the spreading width of the isobaric analog state is analyzed and recent experimental data is shown to be well explained.

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Documento generato il 19/01/20 alle ore 20:53:11