A Proton Recoil Scintillation Technique for Estimating Neutron Energy Spectra
| Autor: | P. K. Sarkar, A. K. Ganguly, K. N. Kirthi |
|---|---|
| Rok vydání: | 1976 |
| Předmět: |
Physics
Bonner sphere Nuclear and High Energy Physics Physics::Instrumentation and Detectors 020209 energy 02 engineering and technology Scintillator Neutron scattering Condensed Matter Physics Neutron temperature Nuclear physics 020303 mechanical engineering & transports 0203 mechanical engineering Nuclear Energy and Engineering 0202 electrical engineering electronic engineering information engineering Neutron cross section Neutron source Neutron detection Neutron Nuclear Experiment |
| Zdroj: | Nuclear Technology. 28:270-281 |
| ISSN: | 1943-7471 0029-5450 |
| Popis: | The proton recoil technique using plastic scintillators is employed to measure fast-neutron spectra. Associated gamma-ray background is eliminated by using various thicknesses of thin scintillators. The method, based on different ranges of electrons and protons in the detector material, is shown to be useful for measuring neutron spectra over an extended energy region. Four scintillator thicknesses are chosen to cover the neutron energy from 1 to 18 MeV, based on practically 100 percent transmission of Compton-edge electrons. The pulse-height spectra from different detectors are mixed to give a pulse-height spectrum of the ''combined'' detector. A general purpose unfolding code is developed to unfold the combined pulse-height spectrum using a combined response matrix that results from the mixing of the calculated (Monte Carlo) response functions for the individual detectors. The neutron spectra of different ($alpha$,n) sources and of $sup 252$Cf spontaneous fission are measured and compared with published data. The technique developed, although used only for a neutron energy up to 14 MeV, can be applied in practice to higher energies. |
| Databáze: | OpenAIRE |
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