THE INVESTIGATION OF PROPERTIES OF SHORT-LIVED SF ISOTOPES (Z > 100) AT THE FOCAL PLANE OF VASSILISSA SEPARATOR
THE INVESTIGATION OF PROPERTIES OF SHORT-LIVED SF ISOTOPES (Z > 100) AT THE FOCAL PLANE OF VASSILISSA SEPARATOR
复制标题
短寿命SF同位素(Z>100)在VASSILISSA分离器焦平面上的性质研究
DOI：
10.1142/9789814508865_0024
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发表时间：
2013
影响因子：
8.6
通讯作者：
A. Yeremin
中科院分区：
文献类型：
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作者：
Alexander V. Svirikhin;Alexander Andreev;Victor Dushin;M. Chelnokov;V. Chepigin;Mohini Gupta;Andrey Isaev;I. Izosimov;D. Katrasev;Alexey Kuznetsov;Oleg Malyshev;Ani Minkova;Simon Mullins;A. Popeko;Evgeniy Sokol;A. Yeremin
为了研究转移核自发裂变的实验，对反冲分离器VASSILISSA的焦平面探测系统进行了改进。在焦平面探测器室周围安装了一个由54个充氦计数器组成的中子探测器。反应48Ca +206Pb = 2n +252No用于调整分离器设置和校准探测器系统与252No的自发裂变。每252No自发裂变事件的平均中子数为¯ν = 4.06±0.12。研究了在40Ar + 206208pb完全聚变反应中产生的短寿命重同位素244246fm。从实验数据得到的244,246Fm的自发裂变平均中子数分别为（¯ν = 3.3±0.3）和（¯ν = 3.55±0.50）。这两个值都是首次确定的
For experiments aimed at the study of spontaneous fission of transfermium nuclei improvements in the focal plane detector system of recoil separator VASSILISSA have been made. A neutron detector consisting of 54 3He-filled counters has been mounted around the focal-plane detector chamber. The reaction 48Ca +206Pb = 2n +252No is used for tuning the separator settings and calibrating the detector system with the spontaneous fission of the 252No. The average neutron number per 252No spontaneous fission event is as large as ¯ν = 4.06 ± 0.12. The short-lived heavy isotopes 244,246Fm, produced in the complete fusion reactions 40Ar +206,208Pb, are investigated. The average number of neutrons per spontaneous fission of 244,246Fm from the experimental data were ( ¯ν = 3.3 ± 0.3) and ( ¯ν = 3.55 ± 0.50), respectively. Both values are determined for the first time