Stopping power, electron screening and the astrophysical S(E) factor of d(3He,p)4He

被引：51

作者：

Costantini, H

Formicola, A

Junker, M

Bonetti, R

Broggini, C

Campajola, L

Corvisiero, P

D'Onofrio, A

Fubini, A

Gervino, G

Gialanella, L

Greife, U

Guglielmetti, A

Gustavino, C

Imbriani, G

Ordine, A

Moroni, PGP

Prati, P

Roca, V

Rogalla, D

Rolfs, C

Romano, M

Schümann, F

Straniero, O

Strieder, F

Terrasi, F ^{[1
]}

Trautvetter, HP

Zavatarelli, S

机构：

[1] Seconda Univ Napoli, Dipartimento Sci Ambientali, Caserta, Italy

[2] Ist Nazl Fis Nucl, I-80125 Naples, Italy

[3] Univ Genoa, Dipartimento Fis, Genoa, Italy

[4] Ist Nazl Fis Nucl, I-16146 Genoa, Italy

[5] Univ Naples Federico II, Dipartimento Sci Fisiche, Naples, Italy

[6] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, Assergi, Italy

[7] Univ Milan, Dipartimento Fis, Milan, Italy

[8] Ist Nazl Fis Nucl, I-20133 Milan, Italy

[9] Ist Nazl Fis Nucl, Padua, Italy

[10] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[11] ENEA, Frascati, Italy

[12] Univ Turin, Dipartimento Fis Sperimentale, Turin, Italy

[13] Ruhr Univ Bochum, Inst Phys Ionenstrahlen, D-4630 Bochum, Germany

[14] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA

[15] Osservatorio Astron Capodimonte, I-80131 Naples, Italy

[16] Osservatorio Astron Collurania, Teramo, Italy

来源：

PHYSICS LETTERS B | 2000年 / 482卷 / 1-3期

关键词：

electron screening; stopping power;

D O I：

10.1016/S0370-2693(00)00513-X

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The d(He-3,p)He-4 cross section has been measured at E = 4.2 to 13.8 keV using the LUNA underground accelerator facility. The experiment was performed to determine the magnitude of the atomic screening effect and to establish values for the energy loss used in data reduction. The observed stopping power of the He-3 ions in the D-2 target is in good agreement with the standard compilation. Using these stopping power values the data lead to an electron-screening potential energy U-e = 132 +/- 9 eV, which is significantly higher than the estimated value of 65 eV from an atomic-physics model. Published by Elsevier Science B.V.

引用

页码：43 / 49

页数：7

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