Development of a Platform at the Matter in Extreme Conditions End Station for Characterization of Matter Heated by Intense Laser-Accelerated Protons
| Autor: | Joseph Strehlow, Krish Bhutwala, J. B. Kim, Neil Alexander, Maylis Dozieres, Eduardo Del Rio, A. McKelvey, Mingsheng Wei, Mathieu Bailly-Grandvaux, Eric Cunningham, Adam Higginson, Nicholas Aybar, Siegfried Glenzer, Eric Galtier, Farhat Beg, Brandon Edghill, R. Hua, Maxence Gauthier, Hae Ja Lee, Gilliss Dyer, Yuan Ping, Joohwan Kim, Christopher McGuffey, P. Forestier-Colleoni, Chandra Curry, Gilbert Collins |
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| Rok vydání: | 2020 |
| Předmět: |
Nuclear and High Energy Physics
Materials science Proton Isochoric process Warm dense matter Condensed Matter Physics Laser 7. Clean energy 01 natural sciences Linear particle accelerator 010305 fluids & plasmas law.invention law 0103 physical sciences Electron temperature Atomic physics Beam (structure) Pyrometer |
| Zdroj: | IEEE Transactions on Plasma Science. 48:2751-2758 |
| ISSN: | 1939-9375 0093-3813 |
| DOI: | 10.1109/tps.2020.3009639 |
| Popis: | High-intensity short-pulse lasers have made possible the generation of energetic proton beams, unlocking numerous applications in high energy density science. One such application is uniform and isochoric heating of materials to the warm dense matter (WDM) state. We have developed a new experimental platform to simultaneously create and probe WDM at the matter in extreme conditions (MEC) end station at the Linac Coherent Light Source (LCLS). The short pulse optical laser (delivering up to 1 J in 45 fs) and the ultrabright LCLS X-ray laser with tunable frequency, respectively, deliver high power required to heat materials to WDM and precision-timed high-resolution X-rays to probe them. The laser-accelerated proton beam driven from a flat 1.5- $\mu \text{m}$ Cu foil was first measured then directed to a secondary sample of Al or polypropylene (PP), typically 300– $400~\mu \text{m}$ away. The time evolution of the sample electron temperature was measured using streaked optical pyrometry, where we observed a peak temperature of 0.9 ± 0.15 eV on the rear surface of an Al sample heated by the proton beam. Simulations using the hybrid-PIC code LSP and the rad-hydro code HELIOS show that a measured proton beam can heat Al to approximately 4 eV and PP to 1 eV if instead focused by a hemispherical Cu target. Through additional LSP simulations, we anticipate creating hotter WDM states (~20 eV) by increasing the laser energy to 10 J and keeping the other laser parameters fixed. |
| Databáze: | OpenAIRE |
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