Measurement of dose distributions of linear energy transfer in matter irradiated by fast neutrons
- Cleveland Clinic Foundation, Department of Radiation Therapy, Cleveland, Ohio 44195 (US)
- University of Wisconsin, Madison, Wisconsin 53706 (USA)
- Lawrence Livermore National Laboratory, Livermore, California 94550 (USA)
A detector has been developed and used to measure dose distributions versus linear energy transfer to thin gas targets in spherical geometry from fast neutron irradiation of tissue-equivalent plastic and carbon. The detector is a hemispherical proportional counter with a Cs(T1) scintillator at the center of the hemisphere. The coincidence of the proportional counter signals constrain the measurements to charged particles traversing the radius of the hemisphere. The charged particle energy deposition distributions are directly measured for a known pathlength. The A-150 kerma factor was measured at a neutron energy of 14.8 MeV and is in agreement with tabulated values. The carbon kerma factor measurements are less than the tabulated value at 14.8 MeV. The alpha-particle production in carbon was measured for neutron energies from 14.1 to 14.8 MeV and is compared with existing data.
- DOE Contract Number:
- AC02-76EV01105; W-7405-ENG-48; W-7405-ENG-36
- OSTI ID:
- 6993844
- Journal Information:
- Medical Physics; (USA), Vol. 17:1; ISSN 0094-2405
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
CARBON
RADIATION DOSE DISTRIBUTIONS
NEUTRON DOSIMETRY
MEV RANGE 10-100
PLASTICS
TISSUE-EQUIVALENT MATERIALS
BIOLOGICAL RADIATION EFFECTS
DAMAGE
FAST NEUTRONS
KERMA
LET
BARYONS
BIOLOGICAL EFFECTS
DOSIMETRY
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
ENERGY TRANSFER
FERMIONS
HADRONS
MATERIALS
MEV RANGE
NEUTRONS
NONMETALS
NUCLEONS
PETROCHEMICALS
PETROLEUM PRODUCTS
RADIATION EFFECTS
SYNTHETIC MATERIALS
655003* - Medical Physics- Dosimetry