Testing of Liquid Scintillator Materials for Gamma and Neutron Detection
The key fact about fissile material is that a sufficient quantity of the material can produce chains of fissions, including some very long chains. A chain of fissions will give rise to a detected burst of neutrons with longer chains generally producing larger bursts. These bursts produce distinctive time correlations in a detector near the multiplying material. These correlations are measurable and can be analyzed to infer attributes of the fissile material including fissile material mass, assembly neutron multiplication, characteristic fast fission chain evolution time scale, also known as the {alpha} time scale, thermalization time scale. The correlation signal is very robust with respect to background and to neutron absorbing material.
- Research Organization:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- W-7405-ENG-48
- OSTI ID:
- 963530
- Report Number(s):
- LLNL-CONF-414602; TRN: US0903370
- Resource Relation:
- Conference: Presented at: INMM, Tucson, AZ, AZ, United States, Jul 14 - Jul 15, 2009
- Country of Publication:
- United States
- Language:
- English
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