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 language | English |
---|---|
Number of pages | 1 |
Publication status | Published - Nov 2002 |
Event | American Physical Society, 44th Annual Meeting of the Division of Plasma - Orlando, United States Duration: 11 Nov 2002 → 15 Nov 2002 Conference number: 44 https://www.aps.org/units/dpp/meetings/meeting.cfm?name=DPP02 |
Conference
Conference | American Physical Society, 44th Annual Meeting of the Division of Plasma |
---|---|
Abbreviated title | APS-DPP |
Country/Territory | United States |
City | Orlando |
Period | 11/11/02 → 15/11/02 |
Internet address |