The neutron-rich isotopes with N 40 below 68Ni, in many ways behave similar to the “island of inversion” nuclei with N 20. We report on the measurements of excited states of 63;65;67Mn via in-beam -ray spectrosc...The neutron-rich isotopes with N 40 below 68Ni, in many ways behave similar to the “island of inversion” nuclei with N 20. We report on the measurements of excited states of 63;65;67Mn via in-beam -ray spectroscopy. The experiment was performed at the Radioactive Isotope Beam Factory, RIKEN. Analysis of data for 63;65;67Mn obtained in the SEASTAR campaign has been done. A few transitions have been identified in each of them providing a chance to study the systematic structure evolution of n-rich Mn isotopes near N 40.展开更多
In this paper we assume that SMI and SNIb are the object sources of γ-ray lines,and they produce a large amount of 26Al diffused in the interstellar medium as a result of explosive nucleosynthesis; we also consider t...In this paper we assume that SMI and SNIb are the object sources of γ-ray lines,and they produce a large amount of 26Al diffused in the interstellar medium as a result of explosive nucleosynthesis; we also consider that stars have different mass and space distributions in the Galaxy,and put the explosive rates of SN as limits to total mass of stars in the Galaxy.We have calculated and discussed the radiant fluxes of γ-ray line of several nuclides.The calculation shows that SNII and SNIb are probably the major sources of 26Al,but its models about 44Ti need to be modified.展开更多
文摘The neutron-rich isotopes with N 40 below 68Ni, in many ways behave similar to the “island of inversion” nuclei with N 20. We report on the measurements of excited states of 63;65;67Mn via in-beam -ray spectroscopy. The experiment was performed at the Radioactive Isotope Beam Factory, RIKEN. Analysis of data for 63;65;67Mn obtained in the SEASTAR campaign has been done. A few transitions have been identified in each of them providing a chance to study the systematic structure evolution of n-rich Mn isotopes near N 40.
基金Project supported by the National Natural Science Foundation of China
文摘In this paper we assume that SMI and SNIb are the object sources of γ-ray lines,and they produce a large amount of 26Al diffused in the interstellar medium as a result of explosive nucleosynthesis; we also consider that stars have different mass and space distributions in the Galaxy,and put the explosive rates of SN as limits to total mass of stars in the Galaxy.We have calculated and discussed the radiant fluxes of γ-ray line of several nuclides.The calculation shows that SNII and SNIb are probably the major sources of 26Al,but its models about 44Ti need to be modified.
