Düsseldorf 2007 – scientific programme
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P: Fachverband Plasmaphysik
P 12: Schwerionen- und lasererzeugte Plasmen
P 12.1: Talk
Wednesday, March 21, 2007, 11:30–11:45, 6F
Excimer-Laser Pumped by an Intense, High-Energy Heavy-Ion-Beam — •Andreas Ulrich1, Aleks Adonin2, Joachim Jacoby2, Vladimir Turtikov2,3, David Fernengel4, Alexander Fertmann3, Alexander Golubev3, Dieter H. H. Hoffmann4,5, Alexander Hug4, Reiner Krücken1, Michael Kulish6, Jurij Menzel4, Andrei Morozov1, Pavel Ni4, Dimitry Nikolaev6, Nikolai Shilkin6, Vladimir Ternovoi6, Serban Udrea4, Dimitri Varentsov5, and Jochen Wieser7 — 1Physik Department E12, TUM, 85748 Garching — 2Inst. Angew. Physik, J.W. Goethe Univ. 60438 Frankfurt Main — 3Alikhanov Inst. f. Theor. and Exp. Phys. 117218 Moscow — 4Inst. f. Kernphys., TU-Darmstadt, 64289 Darmstadt — 5GSI, 64220 Darmstadt — 6Inst. of Chem. Phys., 142432 Chernogolovka, Russia — 7Coherent GmbH, Zielstadtstr. 32, 81379 München
High energy heavy ions stopped in matter can generate homogenously excited, extended volumes of non-thermal plasmas. The high energy loss (dE/dx) and absolute power deposition of heavy ions has been used to pump an ultraviolet laser [1]. A pulsed 250 MeV/u 238U beam with up to 2.5*10E9 particles in ~100 ns beam bunches was sent into a 1.2 m long laser cell filled with a 1.6 bar Ar-Kr-F2 mixture (typically 50% : 49.9% : 0.1%) and the final 70 MeV/u particle energy were deposited in the gas. Laser effect on the 248 nm KrF* excimer laser transition was observed. Experimental data will be presented and the potential for studying rare gas plasmas via laser effect will be discussed.
[1] A. Ulrich et al. Phys. Rev. Lett. 97, 153901 (2006) Work funded by BMBF No. 06F130 and INTAS No. 03-54-4254