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Hard x-ray generation at intensity approaching 10^22 W/cm^2
https://repo.qst.go.jp/records/81438
https://repo.qst.go.jp/records/81438fa8e3047-75a4-43d9-bc7c-9f73011f21e4
Item type | 会議発表用資料 / Presentation(1) | |||||
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公開日 | 2020-12-25 | |||||
タイトル | ||||||
タイトル | Hard x-ray generation at intensity approaching 10^22 W/cm^2 | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_c94f | |||||
資源タイプ | conference object | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Pirozhkov, Alexander
× Pirozhkov, Alexander× Ogura, Koichi× Armstrong, C.× Neely, D.× Timur, Esirkepov× Sagisaka, Akito× Hayakawa, Takehito× Yan, W.× M. Jeong, T.× Singh, S.× Hadjisolomou, P.× Finke, O.× Kumar, D.× Grittani, G.× Nevrkla, M.× Lazzarini, C.× Nejdl, J.× Velyhan, A.× N. Shatokhin, A.× A. Vishnyakov, E.× O. Kolesnikov, A.× N. Ragozin, E.× A. Pikuz, T.× A. Alkhimova, M.× A. Pikuz, S.× Gonzalez izquierdo, Bruno× Fukuda, Yuuji× Kevin Koga, James× Ishino, Masahiko× Kondo, Kotaro× Miyasaka, Yasuhiro× Kon, Akira× Nishikino, Masaharu× Margarone, D.× Sasorov, P.× Weber, S.× Kando, Masaki× Kiriyama, Hiromitsu× Korn, G.× Kondo, Kiminori× Bulanov, Sergey× Kawachi, Tetsuya× Pirozhkov, Alexander× Ogura, Koichi× Timur, Esirkepov× Sagisaka, Akito× Hayakawa, Takehito× Gonzalez izquierdo, Bruno× Fukuda, Yuuji× Kevin Koga, James× Ishino, Masahiko× Kondo, Kotaro× Miyasaka, Yasuhiro× Kon, Akira× Nishikino, Masaharu× Kando, Masaki× Kiriyama, Hiromitsu× Kondo, Kiminori× Bulanov, Sergey× Kawachi, Tetsuya |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | Efficient generation of ~MeV x-rays in the Gamma Flare regime [1],[2] in preplasma via the nonlinear Thomson/inverse Compton scattering mechanism [3] is one of the most promising and expected high-power laser applications. The hard x-rays are generated by Bremsstrahlung as well, while the electrons go through the target [4],[5], which also includes multiple passes (refluxing) [5],[6]. Simulations predict that at high intensities the preplasma x-rays dominate; however, at intensities available now, Bremsstrahlung dominates, so that the Gamma Flare mechanism is not yet demonstrated experimentally. We describe our experiment performed with the J-KAREN-P laser [7]-[9], with the emphasis on data from the scintillator-based hard x-ray spectrographs [10] (0.1 – 1 MeV) and Compton spectrograph [11] (2 – 10 MeV), and our efforts to distinguish the generation mechanism. We thank the J-KAREN-P laser operation group. We acknowledge financial support from ELI-Beamlines, JSPS JP 19H00669, and QST Director Funds 創 成的研究 16 and 創成的研究 20. [1] T. Nakamura, et al., "High-Power γ-Ray Flash Generation in Ultraintense Laser-Plasma Interactions," Phys. Rev. Lett. 108, 195001 ( 2012). [2] C. P. Ridgers, et al., "Dense Electron-Positron Plasmas and Ultraintense γ rays from Laser-Irradiated Solids," Phys. Rev. Lett. 108, 165006 (2012). [3] K. V. Lezhnin, P. V. Sasorov, G. Korn, and S. V. Bulanov, "High power gamma flare generation in multi-petawatt laser interaction with tailored targets," Phys. Plasmas 25, 123105 (2018). [4] D. Wu, et al., "Characteristics of X/γ-ray radiations by intense laser interactions with high-Z solids: The role of bremsstrahlung and radiation reactions," Matter Rad. Extremes 3, 293-299 (2018). [5] J. Vyskočil, O. Klimo, S. Weber, "Simulations of bremsstrahlung emission in ultra-intense laser interactions with foil targets," Plasma Phys. Control. Fusion 60, 054013 (2018). [6] D. R. Rusby, et al., "Effect of rear surface fields on hot, refluxing and escaping electron populations via numerical simulations," High Pow. Las. Sci. Eng. 7, e45 (2019). [7] A.S.Pirozhkov, et al., "Approaching the diffraction-limited, bandwidth-limited Petawatt," Opt. Express 25, 20486 (2017). [8] H. Kiriyama, et al., "High-contrast high-intensity repetitive petawatt laser," Opt. Lett. 43, 2595 (2018). [9] H. Kiriyama, et al., "Experimental investigation on temporal contrast of pre-pulses by post-pulses in a petawatt laser facility," Opt. Lett. (accepted). [10] D. R. Rusby, et al., "Novel scintillator-based x-ray spectrometer for use on high repetition laser plasma interaction experiments," Rev. Sci. Instr. 89, 073502 (2018). [11] S. Singh, et al., "Compact high energy x-ray spectrometer based on forward Compton scattering for high intensity laser plasma experiments," Rev. Sci. Instr. 89, 085118 (2018). |
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会議概要(会議名, 開催地, 会期, 主催者等) | ||||||
内容記述タイプ | Other | |||||
内容記述 | OPTICS & PHOTONICS International Congress 2020 | |||||
発表年月日 | ||||||
日付 | 2020-04-23 | |||||
日付タイプ | Issued |