Author/Authors :
Neuner، نويسنده , , U. and Bock، نويسنده , , R. and Constantin، نويسنده , , Jacob C. and DeWald، نويسنده , , E. and Funk، نويسنده , , U.N. and Geissel، نويسنده , , M. and Hoffmann، نويسنده , , D.H.H and Jacoby، نويسنده , , J. and Kozyreva، نويسنده , , A. and Penache، نويسنده , , D. and Pirzadeh، نويسنده , , P. and Rosmej، نويسنده , , F.B. and Rosmej، نويسنده , , Christine O. Paul-Roth، نويسنده , , M. and Süك، نويسنده , , W. and Tahir، نويسنده , , N.A. and Tauschwitz، نويسنده , , A. and Udrea، نويسنده , , S. and Varentsov، نويسنده , , D. and Wahl، نويسنده , , H.، نويسنده ,
Abstract :
The high current upgrade of the accelerator facilities at GSI Darmstadt, Germany, has created possibilities for a new class of experiments with heavy ion beams. Intense pulses of heavy ions can rapidly heat converter targets to high temperatures. The hydrodynamic response of these converters, the temperature development and the emitted radiation are investigated experimentally. Moreover, measurements are compared to numerical simulations.
ition, the expansion of the converters can be employed to compress cryogenic solid hydrogen that is located next to the converters for fundamental research on the equation of state of hydrogen at high pressures.
the long range of the ions in the converters rather large volumes of hydrogen can be compressed homogeneously, allowing for high precision in the diagnostics. Various geometries for planar or radial compression are under discussion.
300 MeV/u 40Ar18+ beam of 2×1010 particles and 400 μm radius (HWHM), delivered within a pulse of 300 ns width (FWHM), lead targets were brought to hydrodynamic expansion and collision. Maximum expansion velocities were 570 m/s. The numerical simulations yielded maximum temperatures of 0.17 eV and maximum pressures of 2.8 GPa in direct heating.
