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Title: Cationic Dependence of X-ray Induced Damage in Strontium and Barium Nitrate

Abstract

The response of solids to x-ray irradiation is not well understood, in part, because the interactions between x-rays and molecules in solids depend on the intra- and/or inter-molecular electronic properties of the material. Our previous work demonstrated that x-ray induced damage of certain ionic salts depends on the irradiating photon energy, especially when irradiated with photons of energy near the cation’s K-edge. To advance understanding of the cationic dependence of x-ray photochemistry, we present studies of x-ray induced damage of barium nitrate and strontium nitrate. Polycrystalline samples of barium and strontium nitrate were irradiated with high flux monochromatic synchrotron x-rays at selected energies near the K-edge of the respective cations. The damage processes were studied with powder x-ray diffraction, and irradiation products, NO 2 and O 2, were characterized via Raman spectroscopy. Our results demonstrate that irradiating barium and strontium nitrate with photons of energy greater than the K-edge of the cation promotes high rate of decomposition compared to that observed when irradiating with photons of energy below the K-edge. Additionally, differences in x-ray induced damage between the two compounds are examined and discussed, and evidence of the diffusion of irradiation products is presented.

Authors:
 [1];  [2];  [1];  [1]; ORCiD logo [1]
  1. Department of Physics, University of Nevada Las Vegas (UNLV), Las Vegas, Nevada 89154-4002, United States
  2. High-Pressure Collaborative Access Team (HPCAT), Geophysical Laboratory, Carnegie Institution of Washington, Argonne, Illinois 60439, United States
Publication Date:
Research Org.:
Argonne National Lab. (ANL), Argonne, IL (United States); Univ. of Nevada, Las Vegas, NV (United States)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1488763
Alternate Identifier(s):
OSTI ID: 1487029
Grant/Contract Number:  
AC02-06CH11357; NA0002912; FC08-01NV14049; FG02-99ER45775; NA0001974
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory
Additional Journal Information:
Journal Volume: 122; Journal Issue: 44; Journal ID: ISSN 1089-5639
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY; 36 MATERIALS SCIENCE; hard x-ray photochemistry; k-edge dependence

Citation Formats

Goldberger, David, Park, Changyong, Evlyukhin, Egor, Cifligu, Petrika, and Pravica, Michael. Cationic Dependence of X-ray Induced Damage in Strontium and Barium Nitrate. United States: N. p., 2018. Web. doi:10.1021/acs.jpca.8b08224.
Goldberger, David, Park, Changyong, Evlyukhin, Egor, Cifligu, Petrika, & Pravica, Michael. Cationic Dependence of X-ray Induced Damage in Strontium and Barium Nitrate. United States. doi:10.1021/acs.jpca.8b08224.
Goldberger, David, Park, Changyong, Evlyukhin, Egor, Cifligu, Petrika, and Pravica, Michael. Fri . "Cationic Dependence of X-ray Induced Damage in Strontium and Barium Nitrate". United States. doi:10.1021/acs.jpca.8b08224.
@article{osti_1488763,
title = {Cationic Dependence of X-ray Induced Damage in Strontium and Barium Nitrate},
author = {Goldberger, David and Park, Changyong and Evlyukhin, Egor and Cifligu, Petrika and Pravica, Michael},
abstractNote = {The response of solids to x-ray irradiation is not well understood, in part, because the interactions between x-rays and molecules in solids depend on the intra- and/or inter-molecular electronic properties of the material. Our previous work demonstrated that x-ray induced damage of certain ionic salts depends on the irradiating photon energy, especially when irradiated with photons of energy near the cation’s K-edge. To advance understanding of the cationic dependence of x-ray photochemistry, we present studies of x-ray induced damage of barium nitrate and strontium nitrate. Polycrystalline samples of barium and strontium nitrate were irradiated with high flux monochromatic synchrotron x-rays at selected energies near the K-edge of the respective cations. The damage processes were studied with powder x-ray diffraction, and irradiation products, NO2 and O2, were characterized via Raman spectroscopy. Our results demonstrate that irradiating barium and strontium nitrate with photons of energy greater than the K-edge of the cation promotes high rate of decomposition compared to that observed when irradiating with photons of energy below the K-edge. Additionally, differences in x-ray induced damage between the two compounds are examined and discussed, and evidence of the diffusion of irradiation products is presented.},
doi = {10.1021/acs.jpca.8b08224},
journal = {Journal of Physical Chemistry. A, Molecules, Spectroscopy, Kinetics, Environment, and General Theory},
issn = {1089-5639},
number = 44,
volume = 122,
place = {United States},
year = {2018},
month = {10}
}

Journal Article:
Free Publicly Available Full Text
This content will become publicly available on October 19, 2019
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