Shock compression of pre-compressed hydrogen

P.M. Celliers, G.W. Collins, D. Hicks, Jon H. Eggert, B. A. Hammel, P Loubeyre, A Dewaele, M. Koenig, A. Benuzzi-Mounaix, E. Henry, Kanani K. M. Lee, John Richard Pasley, David Neely, C Danson

Research output: Contribution to conferenceAbstract

Abstract

Shock compression experiments on hydrogen samples are usually carried out with cryogenic initial conditions. A new sample preparation technique for laser driven shock compression employs room-temperature fluid samples confined within a pair of diamond anvil flats at high static pressures. We performed shock compression experiments on hydrogen samples pre-compressed to ˜ 1 GPa using the Vulcan laser at Rutherford-Appleton Laboratory to drive ˜ 40 GPa shocks into these samples. The pre-compressed initial state allows us to probe a region of the phase diagram at significantly higher densities compared to cryogenic samples. We diagnosed the shock front using a pair of velocity interferometers operating at probe wavelengths 1064 nm and 532 nm simultaneously. The experiments reveal new information on the nature of the insulator-metal transition in the compressed fluid phase.
Original languageEnglish
Number of pages1
Publication statusPublished - Nov 2002
EventAmerican Physical Society, 44th Annual Meeting of the Division of Plasma - Orlando, United States
Duration: 11 Nov 200215 Nov 2002
Conference number: 44
https://www.aps.org/units/dpp/meetings/meeting.cfm?name=DPP02

Conference

ConferenceAmerican Physical Society, 44th Annual Meeting of the Division of Plasma
Abbreviated titleAPS-DPP
Country/TerritoryUnited States
CityOrlando
Period11/11/0215/11/02
Internet address

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