Proton-Recoil Neutron Spectrometer

1 July 1956

journal article
research article
Published by AIP Publishing in Review of Scientific Instruments

Vol. 27 (7) , 468-474
https://doi.org/10.1063/1.1715612

Abstract

A proton‐recoil telescope with thin polyethylene radiator has been designed for neutron spectroscopy and for neutron detection with known efficiency in the energy region from about 2 to 20 Mev. Five radiator thicknesses may be chosen over this energy region. Protons recoiling near zero degrees from the radiator pass through two proportional counters and terminate in a NaI(Tl) crystal. Triple coincidences gate an analyzer for observing the spectrum from the crystal. A spectrum of 13.7‐Mev neutrons was observed with a width at half‐maximum of 5.3% and 6% background. The efficiency with this resolution at 13.7 Mev is 3.6×10⁻⁶.

Keywords

SPECTRUM

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