In Situ Optical Microspectroscopy Study of Isothermal Bleaching of γ-Irradiated International Simple Glass

IF 3.7 Q2 CHEMISTRY, PHYSICAL

ACS Physical Chemistry Au Pub Date : 2023-07-26 DOI:10.1021/acsphyschemau.3c00020

Mariana Sendova, José A. Jiménez* and Charles L. Crawford,

引用次数: 0

Abstract

The isothermal bleaching of γ-irradiated glass was studied at elevated temperatures (280–340 °C) by real-time in situ optical microspectroscopy for the first time. The study was performed on γ-irradiated (0.83 and 1.99 MGy) International Simple Glass (ISG) borosilicate nuclear waste simulant made by Mo-SCI Corporation (Rolla, MO, USA). The current investigation proposes real-time optical transmission methodology for the activation energy assessment of isothermal bleaching of γ-irradiated glass. The method is based on robust quantification of the Urbach energy decay rates and yields similar activation energies for both doses within ∼0.24–0.26 eV.

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γ辐照国际简易玻璃等温漂白的原位光学显微光谱研究

首次采用实时原位光学显微光谱法研究了γ辐照玻璃在高温(280 ~ 340℃)下的等温漂白过程。研究对象为γ辐照(0.83和1.99 MGy)国际简易玻璃(ISG)硼硅酸盐核废料模拟剂，该模拟剂由MO - sci公司(Rolla, MO, USA)制造。目前的研究提出了实时光学传输方法，以评估γ辐照玻璃等温漂白的活化能。该方法基于厄巴赫能量衰减率的稳健量化，在~ 0.24-0.26 eV范围内，两种剂量的活化能相似。

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来源期刊

ACS Physical Chemistry Au 物理化学-

CiteScore

3.70

自引率

0.00%

发文量

期刊介绍： ACS Physical Chemistry Au is an open access journal which publishes original fundamental and applied research on all aspects of physical chemistry. The journal publishes new and original experimental computational and theoretical research of interest to physical chemists biophysical chemists chemical physicists physicists material scientists and engineers. An essential criterion for acceptance is that the manuscript provides new physical insight or develops new tools and methods of general interest. Some major topical areas include:Molecules Clusters and Aerosols; Biophysics Biomaterials Liquids and Soft Matter; Energy Materials and Catalysis