Accession Number : AD0850228

Title :   A Fast Neutron Flight Time Spectrometer with a Pulsed Neutron Source,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH

Personal Author(s) : Seeliger, D. ; Pose, H.

Report Date : 01 AUG 1968

Pagination or Media Count : 10

Abstract : A description is given of a time-of-flight spectrometer for fast neutrons from a T(d, n)He4 reaction with a pulsed neutron source. The time is measured with the aid of a time-amplitude converter. Intensive short neutron pulses are generated by pulsing the ion current of a 150 kev cascade generator using velocity modulation together with the deflection of a stationary ion current after acceleration. The width of the neutron peaks in the time-of-flight spectrum and, consequently, the total time resolution of the spectrometer with a large-area plastic scintillator is 2 tau = 2.3 x 10 to the minus ninth power sec. The mean intensity is higher than 10 to the 9th power n/4 pi sec. The spectrometer characteristic was investigated by measuring inelastic neutron scattering by C12 nucleus. (Author)

Descriptors :   *NUCLEAR RADIATION SPECTROMETERS), (*FAST NEUTRONS, HELIUM, ISOTOPES, NEUTRON REACTIONS, EAST GERMANY.

Subject Categories : Nuclear Instrumentation

Distribution Statement : APPROVED FOR PUBLIC RELEASE