NE-213 neutron spectrometry system for measurements of 15 MeV

Conference · Wed Oct 01 04:00:00 EDT 1975 · Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States)

OSTI ID:7195308

Johnson, R H; Wehring, B W; Dorning, J J

A 5-cm by 5-cm NE-213 scintillator mounted on a 56AVP PM tube is used with a bridge utilizing two high voltage supplies and giving good linearity and good pulse shape discrimination. The cross-over timing method is used to discriminate against gamma-ray events. Measurements of a /sup 252/Cf and D-T source were used to test the linearity of the system. The /sup 252/Cf measurement is in good agreement with earlier results and is fit by a Maxwellian distribution with a temperature of 1.43 MeV. A modified version of the COOLC unfolding code was used to obtain neutron spectra. This code, FORIST, optimizes the neutron energy resolution through an iterative process. A measured Pu-Be spectrum is used to demonstrate the benefits of the modified unfolding procedure. The Pu-Be spectrum is also in good agreement with earlier results. The 9.7 MeV peak of the Pu-Be neutron spectrum is resolved when the FORIST code is used, but not when the COOLC code is used with the window width data distributed with the COOLC and FERDOR code package.

• Research Organization: Univ. of Illinois, Urbana
• OSTI ID: 7195308
• Conference Information: Journal Name: Natl. Bur. Stand. (U.S.), Spec. Publ.; (United States) Journal Volume: 1
• Country of Publication: United States
• Language: English

Related Subjects

440103* -- Radiation Instrumentation-- Nuclear Spectroscopic Instrumentation
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BARYONS
COMPUTER CALCULATIONS
DATA PROCESSING
ELEMENTARY PARTICLES
FAST NEUTRONS
FERMIONS
HADRONS
ITERATIVE METHODS
LIQUID SCINTILLATION DETECTORS
MEASURING INSTRUMENTS
NEUTRON DETECTORS
NEUTRON SPECTROMETERS
NEUTRONS
NUCLEONS
PARTICLE DISCRIMINATION
PARTICLE IDENTIFICATION
PROCESSING
PROTON RECOIL DETECTORS
RADIATION DETECTORS
SCINTILLATION COUNTERS
SPECTRA UNFOLDING
SPECTROMETERS