Initiation Probability of Persistent Fission Chain With Analog Monte-Carlo Method

The criterion for persistent fission chain determination was discussed and the analog Monte-Carlo code for calculating initiation probability of persistent fission chain based on Geant4 toolkit was developed. Initiation probabilities for a suit of test problems and GodivaⅠ reactor whose reactivity is 5 c/ above prompt critical were calculated using the code. Calculated results are consistent with those obtained from Mercury code and the deterministic prediction.