Proton-induced direct capture on 21Ne and 22Ne

Details Proton-induced direct capture on 21Ne and 22Ne Proton-induced direct capture on 21Ne and 22Ne

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983nupha.408..372g&link_type=abstract

Nuclear Physics A, Volume 408, Issue 2, p. 372-396.

Physics

Nuclear Physics

21

Nuclear Reactions

Scientific paper

The direct capture process in the reactions 21Ne(p, γ)22Na and 22Ne(p, γ)23Na has been investigated at Ep = 0.3-1.6 MeV using neon gas enriched to 91 % in 21Ne and to 99 % in 22Ne, respectively. The gas was recirculated in a differentially pumped gas target system of the extended-static and quasi-point supersonic jet type. For 22Ne(p, γ)23Na, the direct capture process has been observed to several final states in 23Na up to Ex = 8.83 MeV excitation energy. The deduced spectroscopic factors C2S are in fair agreement with the corresponding values from stripping reactions. The capture transition into the 23Na ground state exhibits broad structures, which resemble Ericson fluctuations. The data remove the previously reported discrepancies in C2S for the 23Na ground state. The excitation functions for the 21Ne(p, γ)22Na reaction are dominated by broad and intense resonances, which hampered the measurement of the direct capture process. The nuclear and astrophysical aspects of the results are discussed.
Supported by the Fritz Thyssen Stifung, Kóln (2.12-81).

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