MeV x-ray production from a petawatt laser in the regime of a relativistically transparent preplasma, with applications to radiography

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dc.citation.articleNumber123110en_US
dc.citation.issueNumber12en_US
dc.citation.journalTitlePhysics of Plasmasen_US
dc.citation.volumeNumber31en_US
dc.contributor.authorStrehlow, J.en_US
dc.contributor.authorYin, L.en_US
dc.contributor.authorWong, C.-S.en_US
dc.contributor.authorLuedtke, S. V.en_US
dc.contributor.authorPalaniyappan, S.en_US
dc.contributor.authorStark, D. J.en_US
dc.contributor.authorHuang, C.-K.en_US
dc.contributor.authorBogale, A.en_US
dc.contributor.authorCage, B.en_US
dc.contributor.authorCoffman, T. A.en_US
dc.contributor.authorFigueroa Bengoa, A.en_US
dc.contributor.authorFitzgarrald, R.en_US
dc.contributor.authorMix, L. T.en_US
dc.contributor.authorNedbailo, R.en_US
dc.contributor.authorRusby, D. R.en_US
dc.contributor.authorSchmidt, J. L.en_US
dc.contributor.authorTwardowski, J.en_US
dc.contributor.authorVan Pelt, A.en_US
dc.contributor.authorDay, T. H.en_US
dc.contributor.authorJones, B. J.en_US
dc.contributor.authorBruce, S. A.en_US
dc.contributor.authorHelal, A.en_US
dc.contributor.authorSpinks, M. M.en_US
dc.contributor.authorQuevedo, H. J.en_US
dc.contributor.authorBeg, F. N.en_US
dc.contributor.authorChowdhury, E. A.en_US
dc.contributor.authorDitmire, T.en_US
dc.contributor.authorLiang, E.en_US
dc.contributor.authorThomas, A. G. R.en_US
dc.contributor.authorFernández, J. C.en_US
dc.contributor.authorGautier, D. C.en_US
dc.contributor.authorHunter, J.en_US
dc.contributor.authorKim, Y.en_US
dc.contributor.authorMeaney, K. D.en_US
dc.contributor.authorAlbright, B. J.en_US
dc.date.accessioned2025-01-09T20:16:56Zen_US
dc.date.available2025-01-09T20:16:56Zen_US
dc.date.issued2024en_US
dc.description.abstractBright sources of mega-electron volt (MeV) x-rays have many unique applications, including nuclear physics, radiation oncology, and imaging high areal density systems. High intensity lasers (> 1018 W cm−2) incident on mm-thick metal targets can deliver MeV x-rays via the bremsstrahlung process, providing sources with ultrashort duration ( ∼ps) and small source size (∼100  μm). Here, we report on a reproducible regime of laser-driven MeV x-ray sources, where the x-ray dose can be further increased by 60% by coating the metal target with micrometers of plastic. High fidelity numerical simulations indicate that the interaction is a result of relativistic transparency in the preplasma. Though relativistic transparency is present in both cases, the greater sound speed and smaller ion inertia of the plastic target allow the laser to more deeply penetrate and couple more efficiently to electrons. Radiography with this system demonstrates a resolving power < 300  μm, important for imaging applications.en_US
dc.identifier.citationStrehlow, J., Yin, L., Wong, C.-S., Luedtke, S. V., Palaniyappan, S., Stark, D. J., Huang, C.-K., Bogale, A., Cage, B., Coffman, T. A., Figueroa Bengoa, A., Fitzgarrald, R., Mix, L. T., Nedbailo, R., Rusby, D. R., Schmidt, J. L., Twardowski, J., Van Pelt, A., Day, T. H., … Albright, B. J. (2024). MeV x-ray production from a petawatt laser in the regime of a relativistically transparent preplasma, with applications to radiography. Physics of Plasmas, 31(12), 123110. https://doi.org/10.1063/5.0237193en_US
dc.identifier.digital123110_1_5-0237193en_US
dc.identifier.doihttps://doi.org/10.1063/5.0237193en_US
dc.identifier.urihttps://hdl.handle.net/1911/118095en_US
dc.language.isoengen_US
dc.publisherAIP Publishingen_US
dc.rightsExcept where otherwise noted, this work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND) license. Permission to reuse, publish, or reproduce the work beyond the terms of the license or beyond the bounds of fair use or other exemptions to copyright law must be obtained from the copyright holder.en_US
dc.rights.urihttps://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.titleMeV x-ray production from a petawatt laser in the regime of a relativistically transparent preplasma, with applications to radiographyen_US
dc.typeJournal articleen_US
dc.type.dcmiTexten_US
dc.type.publicationpublisher versionen_US
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