Experimental study of proton-induced nuclear reactions in 6,7Li

被引：40

作者：

Cruz, J. ^{[1
,2
]}

Luis, H. ^{[2
]}

Fonseca, M. ^{[2
]}

Fueloep, Z. ^{[3
]}

Gyuerky, G. ^{[3
]}

Raiola, F. ^{[4
]}

Aliotta, M. ^{[5
]}

Kettner, K. U. ^{[6
]}

Jesus, A. P. ^{[1
,2
]}

Ribeiro, J. P. ^{[2
,7
]}

Barker, F. C. ^{[8
]}

Rolfs, C. ^{[4
]}

机构：

[1] Univ Nova Lisboa, Dept Fis, Fac Ciencias & Tecnol, P-2829516 Caparica, Portugal

[2] Univ Lisbon, Ctr Fis Nucl, P-1649003 Lisbon, Portugal

[3] Atomki, Debrecen, Hungary

[4] Ruhr Univ Bochum, Inst Expt Phys 3, Bochum, Germany

[5] Univ Edinburgh, Sch Phys, Edinburgh EH8 9YL, Midlothian, Scotland

[6] Fachhsch Bielefeld, Bielefeld, Germany

[7] Univ Lisbon, Dept Fis, Fac Ciencias, P-1749016 Lisbon, Portugal

[8] Australian Natl Univ, Dept Theoret Phys, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia

来源：

JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS | 2008年 / 35卷 / 01期

基金：

英国科学技术设施理事会;

关键词：

D O I：

10.1088/0954-3899/35/1/014004

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

The Li-6(p, alpha)He-3 and Li-7(p, alpha)He-4 reaction cross sections were obtained for E = 90-580 keV and E = 90-1740 keV, respectively. R-matrix and polynomial fits to the bare astrophysical S-factor confirmed, with improved accuracy, previous work data, yielding S-b(0) = 3.52 +/- 0.08 MeV b, and 55.6(-1.7)(+0.8) keV b for the Li-6 and Li-7 reactions, respectively. Therefore, the astrophysical consequences related to these two isotopes remain essentially unchanged. With the present work S-b(E) data, a reanalysis of the low energy data for different environments-Li2WO4 insulator, Li metal, and PdLix alloys-confirms that the large electron screening effects can be explained by the plasma model of Debye applied to the quasi-free electrons in the metallic samples.

引用

页数：6

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