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UID:0-6125@eng.ufl.edu
DTSTART;TZID=America/New_York;VALUE=DATE:20231102
DTEND;TZID=America/New_York;VALUE=DATE:20231103
DTSTAMP:20231016T153659Z
URL:https://www.eng.ufl.edu/news-events/events/ne-seminar-environmental-ag
 ing-of-nuclear-materials/
SUMMARY:NE Seminar: "Environmental Aging of Nuclear Materials"
DESCRIPTION:Abstract\nThe characterization of nuclear materials under contr
 olled conditions promotes a better understanding of their chemistry and pr
 ovides insight into their stability. Of particular importance is identifyi
 ng how environmental and storage conditions affect both bulk and sub-bulk 
 scale chemical and physical properties. Such data may provide insight for 
 nuclear forensic applications and can help address fundamental safety and 
 storage concerns. This presentation will discuss the aging of thorium diox
 ide (ThO2)\, uranium dioxide (UO2)\, and plutonium dioxide (PuO2) as a fun
 ction of time\, temperature\, and relative humidity (RH). Morphological ch
 anges were monitored using scanning electron microscopy and interpreted us
 ing a previously-published lexicon of descriptive imaging terminology. Cha
 nges in phase were observed using X-ray diffraction. Ancillary techniques\
 , including energy-dispersive X-ray\, infrared\, Raman\, and X-ray photoel
 ectron spectroscopy\, were used to further probe and interpret aging effec
 ts. The results highlight important stability differences between actinide
  oxides and underscore the need for further research targeted at understan
 ding the fundamental chemical and physical properties of actinide compound
 s near ambient temperatures and humidities.\nBio\nAmy Hixon\, Ph.D.\nAssoc
 iate Professor\nUniversity of Notre Dame\nDr. Amy Hixon is an Associate P
 rofessor and Director of Graduate Studies in the Department of Civil &amp\
 ; Environmental Engineering &amp\; Earth Sciences at the University of Not
 re Dame\, where she teaches courses in environmental aquatic chemistry\, a
 ctinide chemistry\, and nuclear forensic analyses. She also serves as Dire
 ctor of GLOBES\, which is an interdisciplinary certificate program for gra
 duate students interested in exploring how their research intersects with 
 the environment and society. Dr. Hixon received her Ph.D. and M.S. degrees
  in Environmental Health Physics from Clemson University in 2013 and 2008\
 , respectively\, and her B.S. degree in Chemistry from Radford University 
 in 2006. While a doctoral candidate at Clemson University\, she also held 
 a position at the U.S. Nuclear Regulatory Commission in the Office of Fede
 ral and State Materials and Environmental Management Programs\, where she 
 supported the work of the Performance Assessment and Environmental Review 
 branches. Dr. Hixon's research integrates analytical chemistry\, instrumen
 tal analysis\, and modeling techniques to gain a fundamental understanding
  of the behavior of the actinide elements in natural and engineered system
 s.
CATEGORIES:Seminars
LOCATION:Rhines Hall Room 125\, 549 Gale Lemerand Drive\, Gainesville\, FL\
 , 32611\, United States
GEO:29.644403;-82.350403
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=549 Gale Lemerand Drive\, G
 ainesville\, FL\, 32611\, United States;X-APPLE-RADIUS=100;X-TITLE=Rhines 
 Hall Room 125:geo:29.644403,-82.350403
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