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Charged-particle decays of highly excited states in $^{19}$F

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arxiv 1809.04357 v1 pith:3TQFUWOZ submitted 2018-09-12 nucl-ex

classification nucl-ex
keywords reactionsstatesbranchingdecayratiosstrengthsabovealpha
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Neutron-capture reactions on $^{18}$F in the helium-burning shell play an important role in the production of $^{15}$N during core-collapse supernovae. The competition between the $^{18}$F($n,p/\alpha$)$^{18}$O/$^{15}$N reactions controls the amount of $^{15}$N produced. The strengths of these reactions depend on the decay branching ratios of states in $^{19}$F above the neutron threshold. We report on an experiment investigating the decay branching ratios of these states in order to better constrain the strengths of the reactions.

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