Monte Carlo calculations of free ammonia production in deoxygenated solutions of glycylglycine irradiated by X rays and 60Co gamma rays

Journal Article · Thu Mar 01 00:00:00 EST 1990 · Radiation Research; (USA)

DOI:https://doi.org/10.2307/3577773· OSTI ID:6920037

Bolch, W E; Turner, J E; Yoshida, H; Jacobson, K B; Wright, H A; Hamm, R N ^[1]

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1. Univ. of Florida, Gainesville (USA)

Detailed-history Monte Carlo computer codes were used to simulate the formation, diffusion, and chemical reaction of free-radical species within deoxygenated aqueous solutions of glycylglycine irradiated by 250-kVp X rays and by 60Co gamma rays. In one reaction, hydrated electrons react with the glycylglycine solute to produce unbound, or free, ammonia. This reaction is complete by 10(-6) s within individual electron tracks for glycylglycine concentrations greater than or equal to 0.025 M. For solute concentrations from 0.025 to 1.2 M, calculated G values of free ammonia are in excellent agreement with measured values. In addition, the computer model predicts a statistically significant difference between the G value of free ammonia produced under X irradiation and that produced under 60Co gamma irradiation.

• OSTI ID: 6920037
• Journal Information: Radiation Research; (USA), Vol. 121:3; ISSN 0033-7587
• Country of Publication: United States
• Language: English

Related Subjects

63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AMMONIA
BIOSYNTHESIS
GLYCYLGLYCINE
CHEMICAL RADIATION EFFECTS
AQUEOUS SOLUTIONS
COBALT 60
COMPUTERIZED SIMULATION
ELECTRONS
GAMMA RADIATION
MONTE CARLO METHOD
RADICALS
RADIOCHEMISTRY
X RADIATION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
CHEMISTRY
COBALT ISOTOPES
DISPERSIONS
ELECTROMAGNETIC RADIATION
ELEMENTARY PARTICLES
FERMIONS
HYDRIDES
HYDROGEN COMPOUNDS
INTERMEDIATE MASS NUCLEI
INTERNAL CONVERSION RADIOISOTOPES
IONIZING RADIATIONS
ISOMERIC TRANSITION ISOTOPES
ISOTOPES
LEPTONS
MINUTES LIVING RADIOISOTOPES
MIXTURES
NITROGEN COMPOUNDS
NITROGEN HYDRIDES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
PEPTIDES
PROTEINS
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOISOTOPES
SIMULATION
SOLUTIONS
SYNTHESIS
YEARS LIVING RADIOISOT
560120* - Radiation Effects on Biochemicals
Cells
& Tissue Culture