First measurement of the d ( p , γ ) 3 He cross section down to the solar Gamow peak
نویسندگان
چکیده
Using the 50 kV LUNA accelerator facility at the Gran Sasso underground laboratory we measured, with an accuracy of the order of 10%, the d(p, γ)3He cross section from 22 down to * Corresponding author. Address: Dipartimento di Fisica, via Dodecaneso 33, 16146, Genova, Italy. E-mail address: [email protected] (P. Prati). 0375-9474/02/$ – see front matter 2002 Elsevier Science B.V. All rights reserved. PII: S0375-9474(02) 00 74 92 204 LUNA Collaboration / Nuclear Physics A 706 (2002) 203–216 2.5 keV c.m. energy, well below the solar Gamow peak. The experimental set-up was based on a large solid angle, segmented BGO detector and a renewed windowless gas target. The astrophysical S(E) factor within the Gamow peak is in fair agreement with the value of one of the existing extrapolations of data at higher energies. 2002 Elsevier Science B.V. All rights reserved. PACS: 26.65.+t; 25.90.+k
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تاریخ انتشار 2002