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, 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.
- Authors:
-
[1]
- Univ. of Nevada, Las Vegas, NV (United States). Dept. of Physics
- Carnegie Inst. of Washington, Argonne, IL (United States). Geophysical Lab., High Pressure Collaborative Access Team (HPCAT)
- Publication Date:
- Research Org.:
- Univ. of Nevada, Las Vegas, NV (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1488763
- Alternate Identifier(s):
- OSTI ID: 1487029
- Grant/Contract Number:
- NA0002912; FC08-01NV14049; FG02-99ER45775; NA0001974; AC02-06CH11357
- Resource Type:
- 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. https://doi.org/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. https://doi.org/10.1021/acs.jpca.8b08224. https://www.osti.gov/servlets/purl/1488763.
@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},
number = 44,
volume = 122,
place = {United States},
year = {Fri Oct 19 00:00:00 EDT 2018},
month = {Fri Oct 19 00:00:00 EDT 2018}
}
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Figures / Tables:
Figure 1: Samples of barium nitrate loaded in stainless-steel gaskets indented to ∼30 $μ$m and drilled on the laser micromachining system: (A, B) pressurized in DAC, before irradiation; (C) pressurized in DAC after an hour of irradiation at 34 keV (top) and 36 keV (bottom); (D) after an hour ofmore »
Figures / Tables found in this record: