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 00:00:00 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), Vol. 9:3
• Country of Publication: United States
• Language: English

Related Subjects

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