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.

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

GERVINO, Gianpiero;
2000-01-01

Abstract

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.
2000
482
43
49
electron screening; stopping power
H. Costantini; A. Formicola; M. Junker; R. Bonetti; C. Broggini; L. Campajola; P. Corvisiero; A. D'Onofrio; A. Fubini; G. Gervino; L. Gialanella; U. G...espandi
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/47578
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 54
  • ???jsp.display-item.citation.isi??? 50
social impact