The upgrade of the kinematic separator VASSILISSA—experimental results and plans
The upgrade of the kinematic separator VASSILISSA—experimental results and plans
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VASSILISSA 运动分离器的升级——实验结果和计划
DOI：
10.1134/1.1586416
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发表时间：
2003
影响因子：
0.4
通讯作者：
Š. Šáró
中科院分区：
文献类型：
--
作者：
A. Yeremin;A. V. Belozerov;M. Chelnokov;V. Chepigin;V. Gorshkov;A. P. Kabachenko;O. Malyshev;Y. Oganessian;A. Popeko;R. Sagaidak;A. Svirikhin;S. Hofmann;G. Berek;I. Brida;Š. Šáró
在过去的12年里，反冲分离器VASSILISSA一直用于重离子诱导完全聚变反应中产生的蒸发残留物的研究。在实验工作中，在92≤Z≤94的元素区域内，通过亲子相关，鉴定了14个新同位素。用高强度~（48）Ca束和~（232）Th、~（238）U、~（242）Pu靶研究了~（110）、~（112）、~（114）同位素的衰变性质和形成截面。在对应于计算的3个蒸发通道的截面最大值的束流能量下，产生并鉴定了同位素277110、283112和287114。为了进一步开展利用强流48 Ca引出束合成超重元素同位素（Z≥110）的实验，对分离器的离子光学系统和焦平面探测器系统进行了改进。
Within the past twelve years, the recoil separator VASSILISSA has been used for the investigations of evaporation residues produced in heavy-ion-induced complete fusion reactions. In the course of the experimental work, fourteen new isotopes have been identified by the parent-daughter correlations in the region of elements with 92≤Z≤94. The study of the decay properties and formation cross sections of the isotopes of elements 110, 112, and 114 was performed using high-intensity48Ca beams and232Th,238U, and242Pu targets. At the beam energies corresponding to the calculated cross-section maxima of the 3nevaporation channels, the isotopes277110,283112, and287114 were produced and identified. For further experiments aimed at the synthesis of the superheavy element isotopes (Z≥110) with the use of intensive48Ca extracted beams, improvements in the ion optical system of the separator and the focal plane detector system have been made.