The understanding of open quantum systems in unbound nuclei is a challenge to the nuclear structure research[1].The continuum coupling effect may lead to a reordering of the shells in such systems[2].A way to study th...
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The understanding of open quantum systems in unbound nuclei is a challenge to the nuclear structure research[1].The continuum coupling effect may lead to a reordering of the shells in such systems[2].A way to study this effect is to compare the level schemes of two mirror nuclei involving an unbound and a bound nucleus such as 16F and 16N[3].Here we report an experiment of studying the level properties of 16F using the resonant elastic scattering with an 15O radioactive beam delivered by the Radioactive Ion Beam Line at Lanzhou(RIBLL)[4].
The presolar SiC grains[1]carry the original stellar nucleosynthesis *** isotopic anomalies compared to the sun are the strong constrains in the supernovae(SN)model *** 15N-excess in some SiC-AB grains(12C/13C<10 and ...
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The presolar SiC grains[1]carry the original stellar nucleosynthesis *** isotopic anomalies compared to the sun are the strong constrains in the supernovae(SN)model *** 15N-excess in some SiC-AB grains(12C/13C<10 and 14N/15N<272)is one of the challenges of core-collapse supernovae(CCSNe)models[2].Recently,Pignatari pointed out that the entrainment of H-rich material into the He shell before the SN explosion allows the coproduction of 13C,15N and 26Al,which provides a new production scenario for SiC-AB grains[2].In the He shell nucleosynthesis,the 13C is produced through 12C(p,γ)13N(β+γ)13C *** 14N is synthesized through 13N(n,γ)and 13C(p,γ)reactions.
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