α-Particle production in the reaction 6Li+28Si at near-barrier energies -: art. no. 202701

被引：56
|
作者：
Pakou, A
Alamanos, N
Gillibert, A
Kokkoris, M
Kossionides, S
Lagoyannis, A
Nicolis, NG
Papachristodoulou, C
Patiris, D
Pierroutsakou, D
Pollacco, EC
Rusek, K
机构：
[1] Univ Ioannina, Dept Phys, GR-45110 Ioannina, Greece
[2] CEA Saclay, DAPNIA, DSM, F-91191 Gif Sur Yvette, France
[3] Natl Res Ctr, Demokritos, Greece
[4] Ist Nazl Fis Nucl, Sez Napoli, I-80125 Naples, Italy
[5] Andrzej Soltan Inst Nucl Studies, Dept Nucl React, PL-00681 Warsaw, Poland
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 90卷 / 20期
关键词：
D O I：
10.1103/PhysRevLett.90.202701
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The production of alpha particles in the Li-6+Si-28 reaction was studied at near-barrier energies. Angular distributions were performed at four bombarding energies, namely, 7.5, 9, 11, and 13 MeV. The distributions were characterized by a Gaussian shape, which was integrated in order to obtain alpha-particle cross sections. Our results were compared with previous data of Li-6 scattering on various heavier targets and found to exhibit a universal behavior. Present continuum-discretized-coupled-channel calculations support the obtained data. The consequences of the systematic behavior of the alpha-particle production on the unusual behavior of the imaginary potential observed previously in elastic scattering of weakly bound systems is discussed.
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页数：4
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