High-resolution study of {sup 56}Fe{yields}{sup 56}Mn Gamow-Teller transition by the combined analysis of {sup 56}Fe({sup 3}He, t){sup 56}Co and 56Fe(P, p'){sup 56}Fe reactions

Journal Article · Thu Aug 12 00:00:00 EDT 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3485189· OSTI ID:21426537

Nagashimaa, M; Shimbara, Y ^[1]; Fujita, H; Fujita, Y ^[2]; Adachi, T; Hatanaka, K; Hirota, K; Matsubara, H; Nakanishi, K; Okamura, H; Ong, H J; Sakemic, Y; Shimizu, Y; Suzuki, T; Tamii, A; Yosoi, M ^[3]; Botha, N T; Neveling, R ^[4]; Ganioglu, E; Susoy, G ^[5]

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1. Graduate School of Science and Technology, Niigata University, Nishi-ku, Niigata 950-2181 (Japan)
2. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
3. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
4. iThemba LABS, PO Box 722, Somerset West 7129 (South Africa)
5. Physics Department, Istanbul University, TR-34459 Istanbul (Turkey)

The Gamow-Teller (GT) transitions in the {beta}{sup +}(electron capture) direction from the ground state of {sup 56}Fe to the excited states of {sup 56}Mn play an important role in the core collapse of presupernova. Assuming that isospin analogous transitions in isobars have corresponding strengths, we deduced these GT strengths by combining the results of the {sup 56}Fe(p, p'){sup 56}Fe experiment performed at 200 MeV and 0 deg. and the {sup 56}Fe({sup 3}He, t){sup 56}Co experiment in the {beta}{beta} direction at 140 MeV/u and 0 deg. The ground state of {sup 56}Fe has the isospin value of T = 2, while the GT states in {sup 56}Mn have T = 3. In order to identify the analogous T = 2{yields}3, GT transitions in the {sup 56}Fe(p, p'){sup 56}Fe and the {sup 56}Fe({sup 3}He, t){sup 56}Co measurements, we used the fact that the isospin Clebsch-Gordan (CG) coefficients for these T = 2{yields}3 transitions are different in these measurements. Then the GT transition strengths B(GT) in the {beta}{sup +} direction can be deduced from the B(GT) values of the corresponding transitions well determined in the {sup 56}Fe({sup 3}He, t){sup 56}Co measurement assuming the isospin symmetry and correcting the difference of CG coefficients.

• OSTI ID: 21426537
• Journal Information: AIP Conference Proceedings, Vol. 1269, Issue 1; Conference: OMEG-2010: 10. international symposium on origin of matter and evolution of galaxies, Osaka (Japan), 8-10 Mar 2010; Other Information: DOI: 10.1063/1.3485189; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CHARGE EXCHANGE
CLEBSCH-GORDAN COEFFICIENTS
COBALT 56
ELECTRON CAPTURE
ENERGY-LEVEL TRANSITIONS
EXCITED STATES
GAMOW-TELLER RULES
HELIUM 3
HELIUM 3 REACTIONS
IRON 56
ISOSPIN
MANGANESE 56
MEV RANGE
PROTON REACTIONS
RESOLUTION
SCATTERING
SPIN
ANGULAR MOMENTUM
BARYON REACTIONS
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BETA-PLUS DECAY RADIOISOTOPES
CAPTURE
CHARGED-PARTICLE REACTIONS
COBALT ISOTOPES
DAYS LIVING RADIOISOTOPES
ELECTRON CAPTURE RADIOISOTOPES
ENERGY LEVELS
ENERGY RANGE
EVEN-EVEN NUCLEI
EVEN-ODD NUCLEI
HADRON REACTIONS
HELIUM ISOTOPES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
IRON ISOTOPES
ISOTOPES
LIGHT NUCLEI
MANGANESE ISOTOPES
NUCLEAR REACTIONS
NUCLEI
NUCLEON REACTIONS
ODD-ODD NUCLEI
PARTICLE PROPERTIES
RADIOISOTOPES
STABLE ISOTOPES