Application of A150 plastic-equivalent gas in A150 plastic ionization chambers for Co-60. gamma. rays and 14. 8-MeV neutrons

Journal Article · Sat May 01 04:00:00 EDT 1982 · Med. Phys.; (United States)

OSTI ID:5497639

Deluca, Jr, P M; Attix, F H; Pearson, D W; Schell, M C; Awschalom, M

An ion-chamber gas mixture having an atomic composition similar to that of A150 plastic has been tested experimentally. This ''A150 gas'', air, and methane-based Te gas were each flowed through A150 plastic-walled ion chambers of various sizes, and irradiated with /sup 60/CO ..gamma.. rays and 14.8-MeV neutrons, separately administered. Observed ionization was measured and corrected for recombination losses. Best values for W-bar/sub a150/ , averaged over all chamber sizes, were 26.2 eV/ion pair for /sup 60/CO ..gamma.. rays and 28.2 eV/ion pair for 14.8-MeV neutrons.

• Research Organization: Medical Physics Department, Deparment of Radiology, University of Wisconsin 53706
• OSTI ID: 5497639
• Journal Information: Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 9:3; ISSN MPHYA
• Country of Publication: United States
• Language: English

Related Subjects

61 RADIATION PROTECTION AND DOSIMETRY
655003* -- Medical Physics-- Dosimetry
AIR
ALKANES
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHARGED PARTICLES
COBALT 60
COBALT ISOTOPES
DOSE-RESPONSE RELATIONSHIPS
DOSIMETRY
ELECTROMAGNETIC RADIATION
ENERGY
ENERGY RANGE
FLUIDS
GAMMA DOSIMETRY
GAMMA RADIATION
GAMMA SOURCES
GASES
HYDROCARBONS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZATION
IONIZING RADIATIONS
IONS
IRRADIATION
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
MATERIALS
METHANE
MEV RANGE
MEV RANGE 10-100
MINUTES LIVING RADIOISOTOPES
NEUTRON DOSIMETRY
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
PETROCHEMICALS
PETROLEUM PRODUCTS
PLASTICS
RADIATION SOURCES
RADIATIONS
RADIOISOTOPES
RECOMBINATION
SYNTHETIC MATERIALS
TISSUE-EQUIVALENT MATERIALS
YEARS LIVING RADIOISOTOPES