Energy response of agar-alanine phantom dosimeter to gamma radiation

Journal Article · Sun May 01 00:00:00 EDT 1988 · Med. Phys.; (United States)

DOI:https://doi.org/10.1118/1.596235· OSTI ID:7145869

Ciesielski, B; Wielopolski, L; Reinstein, L E

Calculations of the energy response of an electron paramagnetic resonance (EPR) signal induced by gamma radiation in an agar-alanine phantom dosimeter are presented. Theoretically calculated slopes of the EPR signal calibration lines are comparable with those obtained experimentally for low-(50 kVp), medium-(662 keV), and high-(15 MVp) energy photons. The sensitivity of the phantom dosimeter (EPR signal amplitude/Gray) varies less than 2% within the 150- to 20-MeV energy range. For energies above 150 keV, the influence of variations in the size of alanine crystals is negligible.

• Research Organization: Brookhaven National Laboratory, Medical Department, Upton, New York 11973
• OSTI ID: 7145869
• Journal Information: Med. Phys.; (United States), Journal Name: Med. Phys.; (United States) Vol. 15:3; ISSN MPHYA
• Country of Publication: United States
• Language: English

Related Subjects

440102* -- Radiation Instrumentation-- Radiation Dosemeters
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
61 RADIATION PROTECTION AND DOSIMETRY
655003 -- Medical Physics-- Dosimetry
AGAR
ALANINES
AMINO ACIDS
CALIBRATION
CARBOHYDRATES
CARBOXYLIC ACIDS
COLLOIDS
DISPERSIONS
DOSE RATES
DOSEMETERS
DOSIMETRY
ELECTRON SPIN RESONANCE
GAMMA DOSIMETRY
MAGNETIC RESONANCE
MATERIALS
MEASURING INSTRUMENTS
MOCKUP
ORGANIC ACIDS
ORGANIC COMPOUNDS
PHANTOMS
POLYSACCHARIDES
RADICALS
RESONANCE
SACCHARIDES
SENSITIVITY
STRUCTURAL MODELS
TISSUE-EQUIVALENT MATERIALS