A FAST PULSE-SHAPE DISCRIMINATOR WITH APPLICATIONS AS A SPECTROMETER AND SENSITIVE MONITOR FOR 1-30 MEV NEUTRONS

Journal Article · Fri Sep 01 04:00:00 EDT 1961 · Nuclear Instr. & Methods

DOI:https://doi.org/10.1016/0029-554X(61)90184-7· OSTI ID:4822222

De Vries, L J; Udo, F

The construction and operation is described of a neutrongamma discrimination circuit. The discrimination is based on the differences in the shapes of light pulses initiated by protons and electrons in an organic crystal. The circuit separates these pulses above a proton energy of 0.5 Mev. The response to a gamma-source can be calculated as a pile-up effect with a time constant of about 0.1 mu sec. The circuit is independent of normal temperature fluctuations and the multiplier voltage can be varied by 20 per cent. The circuit is applied as a fast neutron spectrometer. The efficiency is 1.3 x 10/ sup -4/ counts/neutron and the resolution 10 per cent at 14 Mev neutron energy. A neutron monitor is designed, based on this circuit. This instrument can measure neutron fluxes down to 10 per cent of the maximum permissible dose and it can present information about the neutron spectra. (auth)

• Research Organization: Inst. for Nuclear Physics Research, Amsterdam
• NSA Number: NSA-16-005519
• OSTI ID: 4822222
• Journal Information: Nuclear Instr. & Methods, Journal Name: Nuclear Instr. & Methods Vol. Vol: 13
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

AMPLIFIERS
CIRCUITS
CRYSTALS
EFFICIENCY
ELECTRONS
ENERGY LEVELS
ENGINEERING AND EQUIPMENT
FAST NEUTRONS
GAMMA SOURCES
NEUTRON SPECTROMETERS
ORGANIC COMPOUNDS
PROTONS
PULSES
SENSITIVITY
SPECTRA
TEMPERATURE