Measurements of time-dependent fast neutron spectra with an NE 213 scintillator

Journal Article · Tue Jan 01 04:00:00 EST 1974 · Nucl. Instrum. Methods, v. 115, no. 2, pp. 317-323

DOI:https://doi.org/10.1016/0029-554X(74)90227-4· OSTI ID:4308372

Pieroni, N; Rusch, D; Wattecamps, E

An NE 213 liquid scintillator was used to measure timedependent fast neutron spectra of pulsed small assemblies. The detector provided both nanosecond timing accuracy and linear pulse-height analysis in a dynamic range of 1: 200 without appreciable pulse-shape discrimination losses above 300 keV. A flexible code, called TRADI,'' was developed to deduce the neutron spectrum from the measured pulse-height distribution. The performance of the detector and the associated code TRADI'' were verified by measuring known spectra. In addition, TRADI'' evaluations were compared with results from the more elaborate FERDOR'' unfolding procedure. The investigation demonstrated that the spectrometer is a suitable tool for the measurement of time-dependent spectra in the energy range from 0.4 to 8 MeV, or higher if the flux is small above 6 MeV. The application of the spectrometer is illustrated by the measurement of the timedependent spectrum of a pulsed natural uranium cylinder. (auth)

• Research Organization: Kernforchungzentrum, Karlsruhe, Ger.
• Sponsoring Organization: USDOE
• NSA Number: NSA-29-024324
• OSTI ID: 4308372
• Journal Information: Nucl. Instrum. Methods, v. 115, no. 2, pp. 317-323, Journal Name: Nucl. Instrum. Methods, v. 115, no. 2, pp. 317-323; ISSN NUIMA
• Country of Publication: Country unknown/Code not available
• Language: English

Related Subjects

*LIQUID SCINTILLATION DETECTORS-- NEUTRON SPECTROSCOPY
*NEUTRON SPECTROMETERS-- LIQUID SCINTILLATION DETECTORS
*SUBCRITICAL ASSEMBLIES-- NEUTRON SPECTRA
DATA PROCESSING
KEV RANGE 100-1000
MEV RANGE 01-10
N46130* --Instrumentation--Radiation Detection Instruments-- Nuclear Spectroscopic Instrumentation
PERFORMANCE
SPECTRA UNFOLDING