Optimization of the proton chopper for 7Li(p,n) neutron spectrometry using a 3He ionization chamber

Abstract

Thick target 7Li(p,n) neutron spectra were measured with a 3He ion chamber in the proton energy region between 1.95 and 2.3MeV using the McMaster pulsed accelerator neutron source. The pulsed neutron beam was produced by an electrostatic proton chopper to reject the slow neutron detection events, which seriously limit the fast neutron counting rate of the 3He ion chamber. To collect both arrival time and energy information of 3He detection …

Authors

Matysiak W; Chettle DR; Prestwich WV; Byun SH

Journal

Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment, Vol. 629, No. 1, pp. 133–139