{"id":1027,"date":"2025-12-18T13:25:09","date_gmt":"2025-12-18T18:25:09","guid":{"rendered":"https:\/\/ne.ncsu.edu\/mix\/?p=1027"},"modified":"2026-01-28T12:31:44","modified_gmt":"2026-01-28T17:31:44","slug":"sadmans-2nd-publication-under-mix","status":"publish","type":"post","link":"https:\/\/ne.ncsu.edu\/mix\/sadmans-2nd-publication-under-mix\/","title":{"rendered":"Sadman&#8217;s 2nd Publication under MIX"},"content":{"rendered":"\n<p>Second part of Sadman&#8217;s PhD thesis work, the paper on in-situ ion irradiation induced nanograin growth in a spent UO2\u00a0fuel has been published by <strong><a href=\"https:\/\/www.sciencedirect.com\/journal\/journal-of-nuclear-materials\" data-type=\"link\" data-id=\"https:\/\/www.sciencedirect.com\/journal\/journal-of-nuclear-materials\">Journal of Nuclear Materials (JNM)<\/a><\/strong>. We thank our collaborators at INL and ANL, as well as INL LDRD for financial support and NSUF for facility support.<\/p>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1200\" height=\"418\" src=\"https:\/\/ne.ncsu.edu\/mix\/wp-content\/uploads\/sites\/19\/2025\/12\/Picture-NewPost-1200x418.png\" alt=\"\" class=\"wp-image-1028\" srcset=\"https:\/\/ne.ncsu.edu\/mix\/wp-content\/uploads\/sites\/19\/2025\/12\/Picture-NewPost-1200x418.png 1200w, https:\/\/ne.ncsu.edu\/mix\/wp-content\/uploads\/sites\/19\/2025\/12\/Picture-NewPost-600x209.png 600w, https:\/\/ne.ncsu.edu\/mix\/wp-content\/uploads\/sites\/19\/2025\/12\/Picture-NewPost-768x267.png 768w, https:\/\/ne.ncsu.edu\/mix\/wp-content\/uploads\/sites\/19\/2025\/12\/Picture-NewPost-1536x535.png 1536w, https:\/\/ne.ncsu.edu\/mix\/wp-content\/uploads\/sites\/19\/2025\/12\/Picture-NewPost-2048x713.png 2048w\" sizes=\"auto, (max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<div style=\"height:50px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Abstract and link of the paper are given below:<br><br><a href=\"https:\/\/doi.org\/10.1016\/j.jnucmat.2025.156394\">https:\/\/doi.org\/10.1016\/j.jnucmat.2025.156394<\/a><\/p>\n\n\n<p id=\"\" class=\"block-icon-text n_ma0 n_ttn n_relative n_flex n_items-center n_flex-row   n_text-text-black n_normal n_f3 n_justify-start \">\n            \n    \n    \n        <span id=\"\" class=\"block-icon-text__icon n_mr3 n_fls0 icon n_text-red n_fill-red n_br0  n_s2 \" aria-hidden=\"true\">\n    \n\n\n    <svg version=\"1.1\"  xmlns=\"http:\/\/www.w3.org\/2000\/svg\" xmlnsXlink=\"http:\/\/www.w3.org\/1999\/xlink\" x=\"0px\" y=\"0px\" viewBox=\"0 0 50 50\" enableBackground=\"new 0 0 50 50\" xmlSpace=\"preserve\" class=\"n_mw-100 n_w-100 n_h-100\" >\n      <g>\n        <path  d=\"M44.4,10l-10-10L5.5,0v50h39L44.4,10z M35.2,4.2l5.1,5.1h-5.1V4.2z M7.9,47.6V2.4l24.9,0v9.3H42l0.1,35.9\n\tH7.9z\" \/>\n        <rect x=\"12.3\" y=\"7.6\"  width=\"19.4\" height=\"1.9\" \/>\n        <rect x=\"12.3\" y=\"18.7\"  width=\"25.1\" height=\"1.9\" \/>\n        <rect x=\"12.3\" y=\"13.1\"  width=\"25.1\" height=\"1.9\" \/>\n        <rect x=\"12.3\" y=\"24.2\"  width=\"25.1\" height=\"1.9\" \/>\n        <rect x=\"12.3\" y=\"29.8\"  width=\"25.1\" height=\"1.9\" \/>\n        <rect x=\"12.3\" y=\"35.3\"  width=\"25.1\" height=\"1.9\" \/>\n        <rect x=\"12.3\" y=\"40.9\"  width=\"12.7\" height=\"1.9\" \/>\n      <\/g>\n    <\/svg>\n\n<\/span>\n   <span class=\"text-black icon-text__content n_univers-light\">\n    This study investigates the irradiation-driven evolution of nanograins in the early-stage restructured rim region of medium burnup spent uranium dioxide (UO2) fuel. Transmission electron microscopy (TEM) lamellas prepared from Belgium Reactor 3 (BR-3) fuel were subjected to in-situ 300 keV Xe ion irradiations under varying doses, fluxes, and temperatures to evaluate their effect on the evolution of the nanograins. Our results reveal that the nanograins grow during ion irradiation. Additionally, the growth is most pronounced at elevated temperatures (300 \u00b0C), moderate at room temperature, and negligible at cryogenic temperature (\u2212223 \u00b0C). This behavior indicates that thermal activation, alongside irradiation effects, is essential to overcome grain boundary pinning by fission gas bubbles, metallic precipitates, and porosity. Furthermore, while nanograins (<em>&lt;<\/em>200 nm) consistently coarsened under irradiation, larger grains did not undergo further restructuring, which can be attributed to the strong defect annihilation at TEM lamella surfaces combined with the limited electronic stopping power of low energy Xe ions used in this work. These findings highlight the roles of thermal spike effects, defect mobility, and impurity pinning in governing grain evolution in the rim region of spent UO2\u00a0fuel during ion irradiation, providing key insights for predictive models of restructuring and performance of the high burnup nuclear fuel.\n<\/span>\n\n<\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Second part of Sadman&#8217;s PhD thesis work, the paper on in-situ ion irradiation induced nanograin growth in a spent UO2\u00a0fuel has been published by Journal&#8230;<\/p>\n","protected":false},"author":296,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_exactmetrics_skip_tracking":false,"_exactmetrics_sitenote_active":false,"_exactmetrics_sitenote_note":"","_exactmetrics_sitenote_category":0,"footnotes":""},"categories":[20],"tags":[],"class_list":["post-1027","post","type-post","status-publish","format-standard","hentry","category-publication"],"acf":[],"_links":{"self":[{"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/posts\/1027","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/users\/296"}],"replies":[{"embeddable":true,"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/comments?post=1027"}],"version-history":[{"count":1,"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/posts\/1027\/revisions"}],"predecessor-version":[{"id":1029,"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/posts\/1027\/revisions\/1029"}],"wp:attachment":[{"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/media?parent=1027"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/categories?post=1027"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ne.ncsu.edu\/mix\/wp-json\/wp\/v2\/tags?post=1027"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}