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通过束流能量为118MeV的~(59)Co(~(32)S,3pn)~(87)Zr熔合蒸发反应,用在束r谱学方法研究了~87 Zr的高自旋态.利用 7台反康普顿谱仪组成的探测阵列进行r-r符合测量,并确定部分r射线的DCO值,在此基础上建立了自旋直到(37/2~+)和(43/2~-)的能级纲图.观测到了多条新的能级.与相邻的同中子异荷素的比较表明,中子对核结构性质的影响远大于质子的贡献.随着质子数的增加,第一交叉频率呈减小的趋势.
The spin-eutectic reaction of ~ (59) Co (~ (32) S, 3pn) ~ (87) Zr with a beam energy of 118MeV was used to study the high spin state of ~ 87Zr by beam spectroscopy. The r-r coincidence measurements were performed using a detector array consisting of seven anti-Compton spectrometers and the DCO values of some of the r-rays were determined. Based on this, spin was established until (37/2 +) and (43/2 ~ -) level level diagram. A number of new energy levels were observed. Comparison with adjacent neutron isoprenoids shows that the influence of neutrons on the structure of the nucleus is far greater than the contribution of protons. As the number of protons increases, the first crossover frequency tends to decrease.