Investigation of the neutron response anisotropy in crystalline organic scintillators.
An anisotropy in the response of crystalline organic scintillators such as anthracene to neutron elastic scattering interactions has been known for some time. Both the amplitude and the time structure of the scintillation light pulse vary with the direction of the proton recoil with respect to the crystalline axes. In principle, this effect could be exploited to develop compact, high-efficiency fast neutron detectors that have directional sensitivity via a precise measurement of the pulse shape. We are investigating the feasibility and sensitivity of such a detector, particularly for neutrons in the fission energy spectrum. Here we will report new measurements of the pulse shape dependence on proton recoil angle in anthracene and stilbene single crystals, for proton energies in the few MeV range. Digital pulse acquisition and processing are used to allow an exploration of different pulse shape analysis techniques.
- Research Organization:
- Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 1016991
- Report Number(s):
- SAND2010-3324C; TRN: US1103157
- Resource Relation:
- Conference: Proposed for presentation at the 2010 Symposium on Radiation Measurements and Applications held May 24-28, 2010 in Ann Arbor, MI.
- Country of Publication:
- United States
- Language:
- English
Similar Records
On the Relationship Between Scintillation Anisotropy and Crystal Structure in Pure Crystalline Organic Scintillator Materials
Characterization of the scintillation anisotropy in crystalline stilbene scintillator detectors