Open AccessEstablishment of persistent fission chains in a super prompt critical system
Author(s) -
Gao Hui,
Xie Qilin,
Xiaobo Liu,
Ping Huang,
Song Lingli,
Wenfeng Liang,
Xiaoqiang Fan
Publication year - 2013
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.62.222801
Subject(s) - criticality , neutron , fission , delayed neutron , prompt neutron , neutron source , physics , nuclear physics , intensity (physics) , statistical physics , quantum mechanics
Through using the basic probability theory and establishing the law of finite chains near the prompt criticality, we deduce the formula of relation between the neutrons number and time in the process of persistent chains initiated by a single-pulse neutron source in burst reaction. The formula is validated by the experiments of CFBR-Ⅱ. The formula is the development of Hansen theory model because it can describe not only the developing tendency in the later stages but also the rapid increasing of neutron number in the early stage. Furthermore, according to the relation between the initial time of burst reaction and the intensity of neutron source, we illustrate that the initial time is hardly dependent on the intensity of weak neutron source.