Decay path measurements for the 2.429 MeV state in Be9: Implications for the astrophysical α+α+n reaction

Details Decay path measurements for the 2.429 MeV state in Be9: Implications for the astrophysical α+α+n reaction Decay path measurements for the 2.429 MeV state in Be9: Implications for the astrophysical α+α+n reaction

Apr 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007phrvc..75d5803p&link_type=abstract

Physical Review C, vol. 75, Issue 4, id. 045803

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11

Nucleosynthesis In Novae, Supernovae, And Other Explosive Environments, Properties Of Nuclei, Nuclear Energy Levels, Breakup And Momentum Distributions, 6<=A<=19

Scientific paper

An experiment was performed at the Australian National University to study the Be9(Li6,Li6)Be9*→α+α+n reaction. This experiment was designed to study the breakup of Be9, in an attempt to quantify the contribution played by the He5+α and 8Be2++n channels for the low lying excited states. This information is required in order to resolve uncertainties in the α+α+n→ Be9 reaction rate in high-energy and neutron-rich astrophysical environments such as supernovae. Angular correlation measurements have been used to deduce that the 2.429 MeV state breaks up almost exclusively via the 8Be2+ channel. This method of identifying the break-up channel resolves the problem of distinguishing between the 8Be2+ and 5Heg.s. channels which are kinetically identical at this excitation energy.

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