Quantifying motion blur by imaging shock front propagation with broadband and narrowband X-ray sources

Autor: Kathryn J. Harke, Michael R. Armstrong, David Martinez, Jonathan Lind, Mukul Kumar

Publikováno v: Scientific Reports, Vol 14, Iss 1, Pp 1-14 (2024)

Abstract Time-integrated radiography using MeV Bremsstrahlung X-ray sources is the norm for imaging during system-level testing of components and structures under dynamic condition. One source of error in the analysis of the time-integrated radiograp

Externí odkaz: https://doaj.org/article/56c0816a87be41fea72d7dd40047928c

Melting and refreezing of zirconium observed using ultrafast x-ray diffraction

Autor: Harry B. Radousky, Michael R. Armstrong, Ryan A. Austin, Elissaios Stavrou, Shaughnessy Brown, Alexander A. Chernov, Arianna E. Gleason, Eduardo Granados, Paulius Grivickas, Nicholas Holtgrewe, Hae Ja Lee, Sergey S. Lobanov, Bob Nagler, Inhyuk Nam, Vitali Prakapenka, Clemens Prescher, Peter Walter, Alexander F. Goncharov, Jonathan L. Belof

Publikováno v: Physical Review Research, Vol 2, Iss 1, p 013192 (2020)

Ultrafast (130-fs) x-ray diffraction at the Linac Coherent Light Source has been applied to observe shock melting, which is driven by a rapid (120-ps) laser pulse impinging on a thin (few micrometers) bilayer of aluminum/zirconium. At a pressure of 1

Externí odkaz: https://doaj.org/article/311571889005431abcf6407b9e83affa

Ultrafast shock synthesis of nanocarbon from a liquid precursor

Autor: Rebecca Lindsey, Michael R. Armstrong, Michael H. Nielsen, Sorin Bastea, Nir Goldman, Elissaios Stavrou, Joseph M. Zaug, Laurence E. Fried

Publikováno v: Nature Communications, Vol 11, Iss 1, Pp 1-7 (2020)
Nature Communications

Carbon nanoallotropes are important nanomaterials with unusual properties and promising applications. High pressure synthesis has the potential to open new avenues for controlling and designing their physical and chemical characteristics for a broad

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a6d1dce543c72231ba7bda9bc82a8326
https://doaj.org/article/3492b074523c45e180276fbdcb7eda8a

Observation of Fundamental Mechanisms in Compression-Induced Phase Transformations Using Ultrafast X-ray Diffraction

Autor: Clemens Prescher, Joseph T. McKeown, Jonathan C. Crowhurst, Eduardo Granados, Inhyuk Nam, Elissaios Stavrou, Sergey S. Lobanov, Jonathan L. Belof, Peter Walter, S. Brown, John D. Roehling, Bob Nagler, Art J. Nelson, Alexander F. Goncharov, Harry B. Radousky, Graeme J. Ackland, Arianna Gleason, Nick Teslich, Tian T. Li, Vitali B. Prakapenka, Nicholas Holtgrewe, Hongxiang Zong, Michael R. Armstrong, Ryan A. Austin, Hae Ja Lee, Paulius Grivickas

Publikováno v: JOM
Armstrong, M R, Radousky, H B, Austin, R A, Stavrou, E, Zong, H, Ackland, G J, Brown, S, Crowhurst, J C, Gleason, A E, Granados, E, Grivickas, P, Holtgrewe, N, Lee, H J, Li, T T, Lobanov, S, McKeown, J T, Nagler, B, Nam, I, Nelson, A J, Prakapenka, V, Prescher, C, Roehling, J D, Teslich, N E, Walter, P, Goncharov, A F & Belof, J L 2021, ' Observation of Fundamental Mechanisms in Compression-Induced Phase Transformations Using Ultrafast X-ray Diffraction ', JOM, pp. 1-9 . https://doi.org/10.1007/s11837-020-04535-4

As theoretically hypothesized for several decades in group IV transition metals, we have discovered a dynamically stabilized body-centered cubic (bcc) intermediate state in Zr under uniaxial loading at sub-nanosecond timescales. Under ultrafast shock

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b29faf34b90aaffa6317ba21b42b6268
https://gfzpublic.gfz-potsdam.de/pubman/item/item_5005410

Melting and refreezing of zirconium observed using ultrafast x-ray diffraction

Autor: Eduardo Granados, A. A. Chernov, Paulius Grivickas, Clemens Prescher, Michael R. Armstrong, Ryan A. Austin, Harry B. Radousky, Arianna Gleason, S. Brown, Hae Ja Lee, Jonathan L. Belof, Vitali B. Prakapenka, Nicholas Holtgrewe, Alexander F. Goncharov, Inhyuk Nam, Sergey S. Lobanov, Elissaios Stavrou, Bob Nagler, Peter Walter

Publikováno v: Physical Review Research

Ultrafast (130-fs) x-ray diffraction at the Linac Coherent Light Source has been applied to observe shockmelting, which is driven by a rapid (120-ps) laser pulse impinging on a thin (few micrometers) bilayer ofaluminum/zirconium. At a pressure of 100

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a7425ffeaab301dc2fbcd659398e4415
https://doi.org/10.1103/physrevresearch.2.013192