The He-3(d,p)He-4 reaction has been studied from E-c.m.=600 keV down to astrophysical energies by means of the "Trojan horse" method using the Li-6(He-3,p alpha)He-4 three-body reaction at E-lab=5 and 6 MeV. Coincidence spectra were measured in kinematic conditions favoring the quasifree He-3+H-2 process. The bare astrophysical factor S-b(E) for the He-3(d,p)He-4 reaction was extracted from the three-body cross section in the modified plane-wave Born approximation. Comparison with the S-b extrapolation from the free two-body data is presented. The independent estimate of the screening potential as obtained with the present work seems to confirm the theoretical adiabatic limit.
The He-3(d,p)He-4 reaction has been studied from E-c.m.=600 keV down to astrophysical energies by means of the "Trojan horse" method using the Li-6(He-3,p alpha)He-4 three-body reaction at E-lab=5 and 6 MeV. Coincidence spectra were measured in kinematic conditions favoring the quasifree He-3+H-2 process. The bare astrophysical factor S-b(E) for the He-3(d,p)He-4 reaction was extracted from the three-body cross section in the modified plane-wave Born approximation. Comparison with the S-b extrapolation from the free two-body data is presented. The independent estimate of the screening potential as obtained with the present work seems to confirm the theoretical adiabatic limit.
Bare-nucleus astrophysical factor of the He-3(d, p)He-4 reaction via the "Trojan horse" method
CHERUBINI, SILVIO;LAMIA, LIVIO;MUSUMARRA, Agatino;Pizzone RG;ROMANO, Stefano;
2005-01-01
Abstract
The He-3(d,p)He-4 reaction has been studied from E-c.m.=600 keV down to astrophysical energies by means of the "Trojan horse" method using the Li-6(He-3,p alpha)He-4 three-body reaction at E-lab=5 and 6 MeV. Coincidence spectra were measured in kinematic conditions favoring the quasifree He-3+H-2 process. The bare astrophysical factor S-b(E) for the He-3(d,p)He-4 reaction was extracted from the three-body cross section in the modified plane-wave Born approximation. Comparison with the S-b extrapolation from the free two-body data is presented. The independent estimate of the screening potential as obtained with the present work seems to confirm the theoretical adiabatic limit.| File | Dimensione | Formato | |
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