The sup 252 Cf(sf) neutron spectrum in the 5- to 20-MeV energy range

Journal Article · Thu Nov 01 04:00:00 EST 1990 · Nuclear Science and Engineering; (United States)

OSTI ID:6257274

Marten, H; Richter, D; Seeliger, D ^[1]; Fromm, W D ^[2]; Bottger, R; Klein, H ^[3]

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1. Technische Univ. Dresen, Sektion Physik, Mommsenstrasse 13, DDR-8027 Dresden (DE)
2. Zentralinstitut fur Kernforschung Rossendorf, Postfach 19, DDR-8051 Dresden (DE)
3. Physikalisch-Technische Bundesanstalt Braunschweig, Bundesallee 100, D-3300 Braunschweig (DE)

This paper reports on the {sup 252}Cf neutron spectrum measured at high energies with a miniature ionization chamber and two different NE-213 neutron detectors. The gamma-ray background and the main cosmic background caused by muons were suppressed by applying efficient pulse-shape discrimination. On the basis of two-dimensional spectroscopy of the neutron time-of-flight and scintillation pulse height, the sliding bias method is used to minimize experimental uncertainties. The experimental data, corrected for several systematic influences, confirm earlier results that show negative deviations from a reference Maxwellian distribution with a 1.42-MeV spectrum temperature for neutron energies above 6 MeV. Experimental results of this work are compared with various statistical model approaches to the {sup 252}Cf(sf) neutron spectrum.

• OSTI ID: 6257274
• Journal Information: Nuclear Science and Engineering; (United States), Journal Name: Nuclear Science and Engineering; (United States) Vol. 106:3; ISSN 0029-5639; ISSN NSENA
• Country of Publication: United States
• Language: English

Related Subjects

663470* -- Fission-- (1992-)
663590 -- Nuclear Mass Ranges-- A=220 & Above-- (1992-)
73 NUCLEAR PHYSICS AND RADIATION PHYSICS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM 252
CALIFORNIUM ISOTOPES
CORRELATIONS
COSMIC RADIATION
ELECTROMAGNETIC RADIATION
ENERGY RANGE
EVEN-EVEN NUCLEI
GAMMA RADIATION
HEAVY NUCLEI
IONIZATION CHAMBERS
IONIZING RADIATIONS
ISOTOPES
MATHEMATICAL MODELS
MEASURING INSTRUMENTS
MEV RANGE
MEV RANGE 01-10
MEV RANGE 10-100
NEUTRON DETECTORS
NEUTRON SPECTRA
NUCLEI
RADIATION DETECTORS
RADIATIONS
RADIOISOTOPES
SPECTRA
SPONTANEOUS FISSION RADIOISOTOPES
STATISTICAL MODELS
TIME-OF-FLIGHT METHOD
YEARS LIVING RADIOISOTOPES