| Autor: |
A. V. Kalikhov, J. N. Abdurashitov, J M. Adams, V. N. Gavrin, V. E. Yants, Jeffrey S. Nico, V. L. Matushko, O. S. Zaborskaia, A. A. Shikhin, Alan K. Thompson |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 476:318-321 |
| ISSN: |
0168-9002 |
| DOI: |
10.1016/s0168-9002(01)01447-4 |
| Popis: |
We discuss the possibility to create a spectrometer of full absorption based on liquid scintillator doped with enriched 6 Li. Of specific interest, the spectrometer will have energy resolution estimated to lie in the range 5–10% for 14 MeV neutrons. It will be sensitive to fluxes from 10−4 to 10 6 cm −2 s −1 above a threshold of 1 MeV in a γ-background of up to 10 4 s −1 . The detector's efficiency will be determined by the volume of the scintillator only (∼3 l) and is estimated to be 0.2–10%. The main reason for the poor resolution of an organic scintillator based spectrometer of full absorption is a non-linear light-yield of the scintillator for recoil protons. The neutron energy is occasionally distributed among recoil protons, and due to non-linear light-yield the total amount of light from all recoil protons ambiguously determines the initial neutron energy. The high-energy resolution will be achieved by compensation of the non-linear light-yield of the scintillator through the use of optically separated sections. The applications of such a detector for low-background experiments in fundamental physics research, characterizations of neutron fluence in space, and the health physics community are discussed. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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