Aspects of Charge Distribution Measurement for [superscript 252]Cf(sf)
Name
PhysRevC.96.034611.pdf
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Author(s)
Wang, Taofeng
Li, Guangwu
Zhu, Liping
Hen, Or
Zhang, Gaolong
Meng, Qinghua
Wang, Liming
Han, Hongyin
Xia, Haihong
Date Issued
September 2017
Journal
Physical Review C
Publisher
American Physical Society
Citation
Wang, Taofeng et al. "Aspects of Charge Distribution Measurement for [superscript 252]Cf(sf)." Physical Review C 96, 3 (September 2017): 034611 © 2017 American Physical Society
Version
Final published version
Abstract
Measurements of charge distributions of fragments in the spontaneous fission of [superscript 252]Cf have been performed using a unique detector setup consisting of a typical grid-ionization chamber coupled with a ΔE-E charged particle telescope. We find that the fragment mass dependency of the kinetic-energy-averaged width of the charge distribution shows a systematically decreasing trend with obvious fluctuations. The variation of the widths of the charge distribution with kinetic energy shows a pan-like shape. This is due to the large number of neutrons emitted at the high excitation energies and cold fragmentation at the low excitation energies. Deviation of the kinetic-energy-averaged most probable charge Z[subscript p] from the unchanged charge distribution (UCD), ΔZ, as a function of the mass number of primary fragments, A*, changes from negative for mass asymmetric fission to positive near the symmetric fissions. Concerning the kinetic energy dependence of Z[subscript p] given primary mass number A*, obvious increasing tendencies of Z[subscript p] with increasing kinetic energy are observed.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
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DOI of Published Version
https://doi.org/10.1103/PhysRevC.96.034611
