The first excited state of 30Ne studied by proton inelastic scattering in reversed kinematics
The first excited state of 30Ne studied by proton inelastic scattering in reversed kinematics
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DOI：
10.1016/s0370-2693(03)00802-5
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发表时间：
2003-07
影响因子：
4.4
通讯作者：
Y. Yanagisawa;M. Notani;H. Sakurai;M. Kunibu;H. Akiyoshi;N. Aoi;H. Baba;K. Demichi;N. Fukuda-N.-Fuk
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文献类型：
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作者：
Y. Yanagisawa;M. Notani;H. Sakurai;M. Kunibu;H. Akiyoshi;N. Aoi;H. Baba;K. Demichi;N. Fukuda-N.-Fuk
富中子核 30Ne 第一激发态的能量是通过质子非弹性散射测定的。用 48 MeV/核子的放射性 30 Ne 束轰击液氢靶，并测量从激发的 30 Ne 发射的去激发 γ 射线的能量。观察到的跃迁很可能是从第一个 2+ 态到 30Ne 基态的跃迁。激发能 791(26) keV 低于 32Mg，表明随着 N=20 等渗线中中子过剩的增加，变形增强。结果表明30Ne属于“逆温岛”。
The energy of the first excited state of the very neutron-rich nucleus30Ne was determined by proton inelastic scattering. A liquid hydrogen target was bombarded by a beam of radioactive30Ne at 48 MeV/nucleon, and energies of the de-excitation γ rays emitted from the excited30Ne were measured. The observed transition is likely to be the one from the first 2+state to the ground state of30Ne. The excitation energy, 791(26) keV, is lower than that of32Mg, indicating enhancement of deformation as the neutron excess increases in the N=20 isotones. The results indicate that30Ne belongs to the ‘island of inversion’.