Fission Product Studies with the SPIDER Instrument at LANSCE

被引：0
|
作者：
Tovesson, F. [1 ]
Mayorov, D. [1 ]
Meierbachtol, K. [1 ]
Shields, D. [2 ]
机构：
[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA
[2] Colorado Sch Mines, Golden, CO 80401 USA
来源：
FISSION AND PROPERTIES OF NEUTRON-RICH NUCLEI | 2018年
关键词：
Nuclear Fission; Fission Product Yields; Pu-239; SPECTROMETER;
D O I：
暂无
中图分类号：
O57 [原子核物理学、高能物理学];
学科分类号：
070202 ;
摘要：
In order to advance our understanding of the fission process we need to measure changes in fission product yields as a function of excitation energy of the fissioning system, as well as study the correlations between kinetic energy, mass and charge of the products. In addition, fission product yields are used for diagnostics in nuclear technology and there is therefore interest in reducing the uncertainties in their yield. The SPIDER instrument is based on the 2v-2E technique for measuring the mass of fission products, and has been used to study spontaneous fission of Cf-252, as well as thermal neutron-induced fission of U-233, U-235, and Pu-239. The current instrument has two spectrometer "arms", which provides sufficient detection efficiency for studying fission at thermal neutron energies. In order to study the change in fission yields at fast energies higher detection efficiency is needed, and a new version of SPIDER is therefore under construction. The new instrument will have a total of 16 individual arms, bringing the total solid angular coverage to about 1%.
引用
收藏
页码：333 / 337
页数：5
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