MONTE-CARLO CALCULATIONS OF FREE AMMONIA PRODUCTION IN DEOXYGENATED SOLUTIONS OF GLYCYLGLYCINE IRRADIATED BY X-RAYS AND CO-60 GAMMA-RAYS

被引：11

作者：

BOLCH, WE

TURNER, JE

YOSHIDA, H

JACOBSON, KB

WRIGHT, HA

HAMM, RN

机构：

[1] UNIV FLORIDA,DEPT ENVIRONM ENGN SCI,GAINESVILLE,FL 32611

[2] OAK RIDGE NATL LAB,DIV HLTH & SAFETY RES,OAK RIDGE,TN 37831

[3] OAK RIDGE NATL LAB,DIV BIOL,OAK RIDGE,TN 37831

来源：

RADIATION RESEARCH | 1990年 / 121卷 / 03期

关键词：

D O I：

10.2307/3577773

中图分类号：

Q [生物科学];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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 γ 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 ≥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 γ irradiation.

引用

页码：248 / 256

页数：9

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