Measured neutron and gamma spectra from californium-252 in a tissue-equivalent medium

Journal Article · Sat Sep 01 00:00:00 EDT 1979 · Med. Phys.; (United States)

OSTI ID:5893230

Elson, H R; Stupar, T A; Shapiro, A; Kereiakes, J G

A method of experimentally obtaining both neutron and gamma-ray spectra in a scattering medium is described. The method utilizes a liquid-organic scintillator (NE-213) coupled with a pulse-shape discrimination circuit. This allows the separation of the neutron-induced pulse-height data from the gamma-ray pulse-height data. Using mathematical unfolding techniques, the two sets of pulse-height data were transformed to obtain the neutron and gamma-ray energy spectra. A small spherical detector was designed and constructed to reduce the errors incurred by attempting spectral measurements in a scattering medium. Demonstration of the utility of the system to obtain the neutron and gamma-ray spectra in a scattering medium was performed by characterizing the neutron and gamma-ray spectra at various sites about a 3.7-..mu..g (1.5 cm active length) californium-252 source in a tissue-equivalent medium.

• Research Organization: Departments of Radiology and Nuclear Engineering University of Cincinnati Cincinnati, Ohio 45267
• OSTI ID: 5893230
• Journal Information: Med. Phys.; (United States), Vol. 6:5
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
GAMMA DOSIMETRY
GAMMA SPECTRA
NEUTRON DOSIMETRY
NEUTRON SPECTRA
TISSUE-EQUIVALENT MATERIALS
CALIFORNIUM 252
LIQUID SCINTILLATION DETECTORS
PULSE DISCRIMINATORS
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
DISCRIMINATORS
DOSIMETRY
ELECTRONIC CIRCUITS
EVEN-EVEN NUCLEI
HEAVY NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
NUCLEI
PULSE CIRCUITS
RADIATION DETECTORS
RADIOISOTOPES
SCINTILLATION COUNTERS
SPECTRA
YEARS LIVING RADIOISOTOPES
655003* - Medical Physics- Dosimetry