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Title: Hardness of irradiated poly(methyl methacrylate) at elevated temperatures

Abstract

The decrease in hardness induced by gamma irradiation in poly(methyl methacrylate) (PMMA) has been investigated. The hardness is assumed to decrease linearly with the concentration of radiation-induced defects. Annealing at high temperatures induces defect annihilation as tracked by an increase in hardness. The annihilation follows first-order kinetics during isothermal annealing. The dependence of hardness on the reciprocal of the time constant satisfies the Arrhenius equation, and the corresponding activation energy of the kinetic process decreases with increasing dose. The hardness of postannealed PMMA decreases linearly with increasing dose. {copyright} 2001 American Institute of Physics.

Authors:
; ;
Publication Date:
Sponsoring Org.:
(US)
OSTI Identifier:
40230504
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 90; Journal Issue: 4; Other Information: DOI: 10.1063/1.1388573; Othernumber: JAPIAU000090000004001745000001; 029117JAP; PBD: 15 Aug 2001; Journal ID: ISSN 0021-8979
Publisher:
The American Physical Society
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; ACTIVATION ENERGY; ANNEALING; ANNIHILATION; ARRHENIUS EQUATION; DEFECTS; HARDNESS; IRRADIATION; KINETICS; PHYSICS

Citation Formats

Lu, K -P, Lee, Sanboh, and Cheng, Cheu Pyeng. Hardness of irradiated poly(methyl methacrylate) at elevated temperatures. United States: N. p., 2001. Web. doi:10.1063/1.1388573.
Lu, K -P, Lee, Sanboh, & Cheng, Cheu Pyeng. Hardness of irradiated poly(methyl methacrylate) at elevated temperatures. United States. https://doi.org/10.1063/1.1388573
Lu, K -P, Lee, Sanboh, and Cheng, Cheu Pyeng. 2001. "Hardness of irradiated poly(methyl methacrylate) at elevated temperatures". United States. https://doi.org/10.1063/1.1388573.
@article{osti_40230504,
title = {Hardness of irradiated poly(methyl methacrylate) at elevated temperatures},
author = {Lu, K -P and Lee, Sanboh and Cheng, Cheu Pyeng},
abstractNote = {The decrease in hardness induced by gamma irradiation in poly(methyl methacrylate) (PMMA) has been investigated. The hardness is assumed to decrease linearly with the concentration of radiation-induced defects. Annealing at high temperatures induces defect annihilation as tracked by an increase in hardness. The annihilation follows first-order kinetics during isothermal annealing. The dependence of hardness on the reciprocal of the time constant satisfies the Arrhenius equation, and the corresponding activation energy of the kinetic process decreases with increasing dose. The hardness of postannealed PMMA decreases linearly with increasing dose. {copyright} 2001 American Institute of Physics.},
doi = {10.1063/1.1388573},
url = {https://www.osti.gov/biblio/40230504}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 4,
volume = 90,
place = {United States},
year = {Wed Aug 15 00:00:00 EDT 2001},
month = {Wed Aug 15 00:00:00 EDT 2001}
}