Non-resonant direct p- and d-wave neutron capture by 12C

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dc.creatorKikuchi, T.
dc.creatorNagai, Y.
dc.creatorSuzuki, T. S.
dc.creatorShima, T.
dc.creatorKii, T.
dc.creatorIgashira, M.
dc.creatorMengoni, A.
dc.creatorOtsuka, T.
dc.date1998-02-17
dc.date.accessioned2026-07-07T11:11:34Z
dc.date.available2026-07-07T11:11:34Z
dc.descriptionDiscrete gamma-rays from the neutron capture state of 13C to its low-lying bound states have been measured using pulsed neutrons at En = 550 keV. The partial capture cross sections have been determined to be 1.7+/-0.5, 24.2+/-1.0, 2.0+/-0.4 and 1.0+/-0.4 microb for the ground (1/2-), first (1/2+), second (3/2-) and third (5/2+) excited states, respectively. From a comparison with theoretical predictions based on the non-resonant direct radiative capture mechanism, we could determine the spectroscopic factor for the 1/2+ state to be 0.80 +/- 0.04, free from neutron-nucleus interaction ambiguities in the continuum. In addition we have detected the contribution of the non-resonant d-wave capture component in the partial cross sections for transitions leading to the 1/2- and 3/2- states. While the s-wave capture dominates at En < 100 keV, the d-wave component turns out to be very important at higher energies. From the present investigation the 12C(n,gamma)13C reaction rate is obtained for temperatures in the range 10E+7 - 10E+10 K.
dc.descriptionAccepted for publication in Phys. Rev. C. - 16 pages + 8 figures
dc.identifierhttps://arxiv.org/abs/nucl-th/9802051
dc.identifierhttp://arxiv.org/abs/nucl-th/9802051
dc.identifierPhys.Rev.C57:2724-2730,1998
dc.identifierdoi:10.1103/PhysRevC.57.2724
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/191140
dc.subjectNuclear Theory
dc.titleNon-resonant direct p- and d-wave neutron capture by 12C
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