Laboratory astroparticle physics

Research group

Research theme

Sub department

About

Comparison between x-ray scattering and velocity-interferometry measurements from shocked liquid deuterium

Physical Review E American Physical Society (APS) 87:4 (2013) 043112

Authors:

K Falk, SP Regan, J Vorberger, BJB Crowley, SH Glenzer, SX Hu, CD Murphy, PB Radha, AP Jephcoat, JS Wark, DO Gericke, G Gregori
More details from the publisher
More details

29aBC-2 パワーレーザーを用いた極超高圧力ショック下の物質の振舞いに関する実験的研究(29aBC ビーム物理領域,領域2合同 高エネルギー密度物理・パワーレーザー・XFEL,領域2(プラズマ基礎・プラズマ科学・核融合プラズマ・プラズマ宇宙物理))

(2013) 295

Authors:

尾崎 典雅, 兒玉 了祐, 佐野 智一, 宮西 宏併, 浦西 宏幸, Gianluca GREGORI, FALK Katerina, Thomas WHITE, 関根 利守, 犬伏 雄一, 木村 友亮, 土屋 卓久, 佐野 孝好, 坂和 洋一, Alessandra BENUZZI-MOUNAIX, Michel KOENIG, David RILEY, 牧田 美香子
More details from the publisher

Observation of inhibited electron-ion coupling in strongly heated graphite

(2013)

Authors:

TG White, J Vorberger, CRD Brown, BJB Crowley, P Davis, SH Glenzer, JWO Harris, DC Hochhaus, S Le Pape, T Ma, CD Murphy, P Neumayer, LK Pattison, S Richardson, DO Gericke, G Gregori
More details from the publisher

FLASH hydrodynamic simulations of experiments to explore the generation of cosmological magnetic fields

High Energy Density Physics 9:1 (2013) 75-81

Authors:

A Scopatz, M Fatenejad, N Flocke, G Gregori, M Koenig, DQ Lamb, D Lee, J Meinecke, A Ravasio, P Tzeferacos, K Weide, R Yurchak

Abstract:

We report the results of FLASH hydrodynamic simulations of the experiments conducted by the University of Oxford High Energy Density Laboratory Astrophysics group and its collaborators at the Laboratoire pour l'Utilisation de Lasers Intenses (LULI). In these experiments, a long-pulse laser illuminates a target in a chamber filled with Argon gas, producing shock waves that generate magnetic fields via the Biermann battery mechanism. The simulations show that the result of the laser illuminating the target is a series of complex hydrodynamic phenomena. © 2012 Elsevier B.V.
More details from the publisher
More details

Modeling HEDLA magnetic field generation experiments on laser facilities

High Energy Density Physics 9:1 (2013) 172-177

Authors:

M Fatenejad, AR Bell, A Benuzzi-Mounaix, R Crowston, RP Drake, N Flocke, G Gregori, M Koenig, C Krauland, D Lamb, D Lee, JR Marques, J Meinecke, F Miniati, CD Murphy, HS Park, A Pelka, A Ravasio, B Remington, B Reville, A Scopatz, P Tzeferacos, K Weide, N Woolsey, R Young, R Yurchak

Abstract:

The Flash Center is engaged in a collaboration to simulate laser driven experiments aimed at understanding the generation and amplification of cosmological magnetic fields using the FLASH code. In these experiments a laser illuminates a solid plastic or graphite target launching an asymmetric blast wave into a chamber which contains either Helium or Argon at millibar pressures. Induction coils placed several centimeters away from the target detect large scale magnetic fields on the order of tens to hundreds of Gauss. The time dependence of the magnetic field is consistent with generation via the Biermann battery mechanism near the blast wave. Attempts to perform simulations of these experiments using the FLASH code have uncovered previously unreported numerical difficulties in modeling the Biermann battery mechanism near shock waves which can lead to the production of large non-physical magnetic fields. We report on these difficulties and offer a potential solution. © 2012 Elsevier B.V.
More details from the publisher