Gamma Radiation Effects on Physical, Optical, and Structural Properties of Binary As-S glasses

Journal Article · Thu Mar 01 04:00:00 EST 2012 · Journal of the American Ceramic Society

DOI:https://doi.org/10.1111/j.1551-2916.2011.04938.x· OSTI ID:1036412

Sundaram, S K; McCloy, John S; Riley, Brian J; Murphy, Mark K; Qiao, Hong ^[1]; Windisch, Charles F; Walter, Eric D; Crum, Jarrod V; Golovchak, Roman; Shpotyuk, O

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1. Amy

Gamma radiation induces changes in physical, optical, and structural properties in chalcogenide glasses., Previous research has focused on As{sub 2}S{sub 3} and families of glasses containing Ge. For the first time, we present composition and dose dependent data on the As-S binary glass series. Binary As{sub x}S{sub 100-x} (x = 30, 33, 36, 40, and 42) glasses were irradiated with gamma radiation using a {sup 60}Co source at 2.8 Gy/s to accumulated doses of 1, 2, 3, and 4 MGy. The irradiated samples were characterized at each dose level for density, refractive index, x-ray diffraction, and Raman spectrum. These results are compared to those of as-made and 1 year aged samples. We report an initial increase in density followed by a decrease as a function of dose that contradicts the expected compositional dependence of molar volume of these glasses. This unusual behavior is explained based on microvoid formation and nanoscale phase-separation induced by the irradiation in these glasses. XRD, Raman, and EPR data provide supporting evidence, underscoring the importance of optimally- or overly-constrained structures for stability under aging or irradiation.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 1036412
• Report Number(s): PNNL-SA-78558; 42302; 400403909
• Journal Information: Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 3 Vol. 95; ISSN 0002-7820; ISSN JACTAW
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
AGING
CHALCOGENIDES
Environmental Molecular Sciences Laboratory
GAMMA RADIATION
GLASS
IRRADIATION
REFRACTIVE INDEX
STABILITY
X-RAY DIFFRACTION
chalcogenide glass
gamma irradiation
high dose dosimetry