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arxiv: 1101.0207 · v1 · pith:NZJO3K2Wnew · submitted 2010-12-31 · ⚛️ nucl-th · astro-ph.SR· nucl-ex

Radiative Neutron Capture on Lithium-7

classification ⚛️ nucl-th astro-ph.SRnucl-ex
keywords modelcalculationscapturecrosseffectiveenergylithium-7neutron
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The radiative neutron capture on lithium-7 is calculated model independently using a low energy halo effective field theory. The cross section is expressed in terms of scattering parameters directly related to the S-matrix element. The cross section depends on the poorly known p-wave effective range parameter r. This constitutes the leading order uncertainty in traditional model calculations. It is explicitly demonstrated by comparing with potential model calculations. A single parameter fit describes the low energy data extremely well and yields r = -1.47 fm^{-1}.

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