Fine structure of the Gamow-Teller resonance in 90Nb and level density of 1+ states -: art. no. 012502

被引:58
|
作者
Kalmykov, Y
Adachi, T
Berg, GPA
Fujita, H
Fujita, K
Fujita, Y
Hatanaka, K
Kamiya, J
Nakanishi, K
von Neumann-Cosel, P
Ponomarev, VY
Richter, A
Sakamoto, N
Sakemi, Y
Shevchenko, A
Shimbara, Y
Shimizu, Y
Smit, FD
Wakasa, T
Wambach, J
Yosoi, M
机构
[1] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany
[2] Osaka Univ, Dept Phys, Toyonaka, Osaka 5600043, Japan
[3] Osaka Univ, Res Ctr Nucl Phys, Ibaraki, Osaka 5670047, Japan
[4] Univ Witwatersrand, Sch Phys, ZA-2050 Johannesburg, South Africa
[5] iThemba LABS, ZA-7129 Somerset W, South Africa
[6] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan
关键词
D O I
10.1103/PhysRevLett.96.012502
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The fine structure of the Gamow-Teller resonance in a medium-heavy nucleus is observed for the first time in a high-resolution Zr-90(He-3,t)Nb-90 experiment at the Research Center for Nuclear Physics, Osaka. Using a novel wavelet analysis technique, it is possible to extract characteristic energy scales and to quantify their relative importance for the generation of the fine structure. This method combined with the selectivity of the reaction permits an extraction of the level density of 1(+) states in Nb-90.
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页数:4
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