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arXiv 1105.4755nucl-ex
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~(132)Sn放射性离子束直接反应测量

Direct reaction measurements with a 132Sn radioactive ion beam

K. L. Jones, A. S. Adekola, D. W. Bardayan, J. C. Blackmon, K. Y. Chae, K. A. Chipps, J. A. Cizewski, L. Erikson, C. Harlin, R. Hatarik, R. Kapler, R. L. Kozub,… 展开作者

K. L. Jones, A. S. Adekola, D. W. Bardayan, J. C. Blackmon, K. Y. Chae, K. A. Chipps, J. A. Cizewski, L. Erikson, C. Harlin, R. Hatarik, R. Kapler, R. L. Kozub, J. F. Liang, R. Livesay, Z. Ma, B. H. Moazen, C. D. Nesaraja, F. M. Nunes, S. D. Pain, N. P. Patterson, D. Shapira, J. F. Shriner, M. S. Smith, T. P. Swan, J. S. Thomas

摘要:

用630 MeV的132 Sn放射性离子束测量了(d,p)中子转移和(d,d)弹性散射反应的逆运动学。弹性散射数据是在卢瑟福散射占主导地位的反应,核效应占不到8%的截面的区域。核效应的大小被认为是独立的光学势使用,允许传输数据以可靠的方式进行规范化。中子转移反应在1363 keV处填充了一个先前未测量的状态,这很可能是在N=82壳层闭合之上预期的单粒子3 p 1/2状态。利用有限程绝热波计算对数据进行了分析,并将计算结果与以前利用扭曲波玻恩近似的分析结果进行了比较。基态和第一激发态的角分布与先前的试探性自旋和宇称分配是一致的。从微分截面中提取的光谱因子与基准双魔核208 Pb以外的单中子态的光谱因子相似。

英文摘要:

The (d,p) neutron transfer and (d,d) elastic scattering reactions were measured in inverse kinematics using a radioactive ion beam of 132Sn at 630 MeV. The elastic scattering data were taken in a region where Rutherford scattering dominated the reaction, and nuclear effects account for less than 8% of the cross section. The magnitude of the nuclear effects was found to be independent of the optical potential used, allowing the transfer data to be normalized in a reliable manner. The neutron-transfer reaction populated a previously unmeasured state at 1363 keV, which is most likely the single-particle 3p1/2 state expected above the N=82 shell closure. The data were analyzed using finite range adiabatic wave calculations and the results compared with the previous analysis using the distorted wave Born approximation. Angular distributions for the ground and first excited states are consistent with the previous tentative spin and parity assignments. Spectroscopic factors extracted from the differential cross sections are similar to those found for the one neutron states beyond the benchmark doubly-magic nucleus 208Pb.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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