Gamow-Teller unit cross sections of the (p,n) reaction at 198 and 297 MeV on medium-heavy nuclei

Journal Article · Sun Feb 15 04:00:00 EST 2009 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.79.024602· OSTI ID:21199558

Sasano, M; Sakai, H; Yako, K; Saito, T; Takahashi, Y ^[1]; Wakasa, T; Asaji, S; Fujita, K; Hagihara, Y ^[2]; Fujita, Y ^[3]; Greenfield, M B ^[4]; Hatanaka, K; Okamura, H; Tameshige, Y; Tamii, A ^[5]; Kawabata, T; Shimizu, Y ^[6]; Kuboki, H; Sekiguchi, K ^[7]; Maeda, Y ^[8]

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1. Department of Physics, University of Tokyo, Bunkyo, Tokyo 113-0033 (Japan)
2. Department of Physics, Kyushu University, Higashi, Fukuoka 812-8581 (Japan)
3. Department of Physics, Osaka University, Toyonaka, Osaka 560-0043 (Japan)
4. Department of Physics, International Christian University, Mitaka, Tokyo 181-8585 (Japan)
5. Research Center for Nuclear Physics, Osaka University, Ibaraki, Osaka 567-0047 (Japan)
6. Center for Nuclear Study, The University of Tokyo, Bunkyo, Tokyo 113-0033 (Japan)
7. Institute of Physical and Chemical Research, Wako, Saitama 351-0198 (Japan)
8. Department of Applied Physics, University of Miyazaki, Kibanadai-nishi, Miyazaki-shi 889-2192 (Japan)

Gamow-Teller (GT) unit cross sections, {sigma}{sub GT}, are obtained at 198 and 297 MeV by measuring the double differential cross sections at 0 deg. for the (p,n) reaction on {sup 58}Ni, {sup 70}Zn, {sup 114}Cd, {sup 118}Sn, and {sup 120}Sn. The mass dependence of {sigma}{sub GT} and the ratio of {sigma}{sub GT} to the Fermi unit cross section, {sigma}{sub F}, (R{sup 2}) are also derived in the mass region of 58{<=}A{<=}120. The {sigma}{sub GT} value for {sup 90}Zr at 297 MeV interpolated using the A-dependence obtained herein agrees with that used in a previous analysis where the GT transition strength over a wide energy region up to the continuum was discussed. However, the deduced {sup 64}Ni{sigma}{sub GT} value at 198 MeV is 20% smaller than that obtained from the analysis of a previous (n,p) measurement. The present R{sup 2} values in the mass region heavier than {sup 42}Ca are larger than those in the region up to {sup 42}Ca and increase as a function of A.

• OSTI ID: 21199558
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 79; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CADMIUM 114
CALCIUM 42
DIFFERENTIAL CROSS SECTIONS
FUNCTIONS
GAMOW-TELLER RULES
MASS
MEV RANGE 100-1000
NEUTRON REACTIONS
NICKEL 58
NICKEL 64
PROTON-EMISSION DECAY
TIN 118
TIN 120
ZINC 70
ZIRCONIUM 90