A W Klemmer, S E Kreher, T M Hutchinson, E P Yu, T J Awe, C L Rousculp, D H Dolan, B T Hutsel, K C Yates, K J Swanson, J J Iratcabal, A Dahal, B S Bauer
{"title":"Magnetic compression and a kinematic signature of surface melting in current-driven metal loads.","authors":"A W Klemmer, S E Kreher, T M Hutchinson, E P Yu, T J Awe, C L Rousculp, D H Dolan, B T Hutsel, K C Yates, K J Swanson, J J Iratcabal, A Dahal, B S Bauer","doi":"10.1103/qxq4-k5xp","DOIUrl":null,"url":null,"abstract":"<p><p>In current-driven metal loads, a nonlinear magnetic-diffusion wave carries current and Joule heating inward from the electrical skin-depth layer, coupling the electromagnetic drive to material compression, melting, and expansion. Photon Doppler velocimetry of electrically thick aluminum measures premelt radial magnetic compression of 34.8±2.1 nm and an acceleration transition during surface melting. Interpreted with one-dimensional magnetohydrodynamic calculations, the measured velocity history gives a model-assisted solid-liquid transition duration of 4.5±0.7ns. The result is a validation-relevant surface-motion constraint for integrated current-driven material models, complementary to direct pressure-density-temperature measurements of aluminum.</p>","PeriodicalId":48698,"journal":{"name":"Physical Review E","volume":"114 2","pages":"L023202"},"PeriodicalIF":2.5000,"publicationDate":"2026-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physical Review E","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1103/qxq4-k5xp","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, FLUIDS & PLASMAS","Score":null,"Total":0}
引用次数: 0
Abstract
In current-driven metal loads, a nonlinear magnetic-diffusion wave carries current and Joule heating inward from the electrical skin-depth layer, coupling the electromagnetic drive to material compression, melting, and expansion. Photon Doppler velocimetry of electrically thick aluminum measures premelt radial magnetic compression of 34.8±2.1 nm and an acceleration transition during surface melting. Interpreted with one-dimensional magnetohydrodynamic calculations, the measured velocity history gives a model-assisted solid-liquid transition duration of 4.5±0.7ns. The result is a validation-relevant surface-motion constraint for integrated current-driven material models, complementary to direct pressure-density-temperature measurements of aluminum.
期刊介绍：
Physical Review E (PRE), broad and interdisciplinary in scope, focuses on collective phenomena of many-body systems, with statistical physics and nonlinear dynamics as the central themes of the journal. Physical Review E publishes recent developments in biological and soft matter physics including granular materials, colloids, complex fluids, liquid crystals, and polymers. The journal covers fluid dynamics and plasma physics and includes sections on computational and interdisciplinary physics, for example, complex networks.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
