Electron screening in the astrophysical Li-6(p,He-3)He-4 and Li-7(p,alpha)He-4 cross sections from the density-functional theory

被引：1

作者：

Boudouma, Y

Chami, AC

Beaumevieille, H

机构：

[1] USTHB, INST PHYS, EL ALIA, BAB EZZOUAR ALG, ALGERIA

[2] IN2P3, INST NUCL SCI, F-38026 GRENOBLE, FRANCE

[3] UNIV GRENOBLE 1, F-38026 GRENOBLE, FRANCE

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS | 1997年 / 129卷 / 03期

关键词：

D O I：

10.1016/S0168-583X(97)00287-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A model of electron screening of the proton and the Li atom in a solid target is presented in the frame of the density-functional theory. A fit of the enhancement factor is given for the astrophysical energy range. Deduced U-0 electron potential values are lower than the experimental ones. Possible causes of experimental uncertainties are finally discussed.

引用

页码：305 / 310

页数：6

共 25 条

[1] INTERATOMIC REPULSIVE POTENTIALS AT VERY SMALL AND INTERMEDIATE SEPARATIONS [J].

ABRAHAMSSON, A ;

HATCHER, RD ;

VINEYARD, GH .

PHYSICAL REVIEW, 1961, 121 (01) :159-&

[2]

BOUDOUMA Y, IN PRESS NUCL PHYS A

[3] ATOMIC EFFECTS IN THE DETERMINATION OF NUCLEAR CROSS-SECTIONS OF ASTROPHYSICAL INTEREST [J].

BRACCI, L ;

FIORENTINI, G ;

MELEZHIK, VS ;

MEZZORANI, G ;

QUARATI, P .

NUCLEAR PHYSICS A, 1990, 513 (02) :316-343

[4] PENETRATION OF SWIFT ION CLUSTERS THROUGH SOLIDS [J].

BRANDT, W ;

RITCHIE, RH .

NUCLEAR INSTRUMENTS & METHODS, 1976, 132 (JAN-F) :43-55

[5] ENERGY-LOSS OF SWIFT PROTON CLUSTERS IN SOLIDS [J].

BRANDT, W ;

RATKOWSKI, A ;

RITCHIE, RH .

PHYSICAL REVIEW LETTERS, 1974, 33 (22) :1325-1328

[6]

DAS MP, 1994, LECT METHODS ELECT S

[7] ANALYTICAL CALCULATION OF INTERATOMIC INTERACTION POTENTIALS AT THE RELATIVE MOTION OF PARTNERS [J].

DEDKOV, GV .

RADIATION EFFECTS AND DEFECTS IN SOLIDS, 1983, 71 (3-4) :271-288

[8]

ECHENIQUE PM, 1989, INT J QUANTUM CHEM, P521

[9] TEST FOR ISOTOPIC DEPENDENCE OF ELECTRON SCREENING IN FUSION REACTIONS [J].

ENGSTLER, S ;

RAIMANN, G ;

ANGULO, C ;

GREIFE, U ;

ROLFS, C ;

SCHRODER, U ;

SOMORJAI, E ;

KIRCH, B ;

LANGANKE, K .

PHYSICS LETTERS B, 1992, 279 (1-2) :20-24

[10] ISOTOPIC DEPENDENCE OF ELECTRON SCREENING IN FUSION REACTIONS [J].