Astronomy and Astrophysics – Astrophysics
Scientific paper
Sep 1991
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991apj...379..420b&link_type=abstract
Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 379, Sept. 20, 1991, p. 420-428.
Astronomy and Astrophysics
Astrophysics
17
Absorption Cross Sections, Neon Isotopes, Nuclear Astrophysics, Nuclear Capture, Stellar Physics, High Energy Interactions, Neutron Sources, Nuclear Fusion, Van De Graaff Accelerators
Scientific paper
The capture cross section of Ne-22 has been determined by a fast cyclic activation technique. The measurements were carried out at the Karlsruhe 3.75 MV pulsed Van de Graaff accelerator using the L-7(p, n) reaction close to the reaction threshold to generate neutrons with a distribution resembling a Maxwell spectrum of kT = 25 keV. The activation samples consisted of a mixture of enriched Ne-22 (99.9 percent) and natural Kr-gas contained in stainless steel spheres (20 mm diameter and 0.5 mm wall thickness). The activity of the samples was counted with a high-resolution Ge(Li) detector via the characteristic 439 keV Ne-23 gamma-ray line. The Ne-22 capture cross section at kT = 25 keV was found to be 66.0 + or - 5.0 microbarn.
Beer Hermann
Kaeppeler Franz
Rupp George
Voss Florian
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