München 2006 – wissenschaftliches Programm

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HK: Physik der Hadronen und Kerne

HK 59: Instrumentation und Anwendungen

HK 59.1: Gruppenbericht

Freitag, 24. März 2006, 14:00–14:30, H

Ultra-Highfield Physics with PW und EW Lasers, New Possibilities in Fundamental-, Nuclear- and Hadron Physics — •D. Habs, F. Gruener, U. Schramm, and M. Sewtz — LMU München

The Petawatt-laser PFS (3J/3fs) with 10 Hz repetition rate and a focused intensity of 10²²W/cm² will be setup at the MPQ in Munich (until end 2007) and we join planning the Exawatt-laser ELI (10kJ/10fs) with 0.03 Hz and a focused intensity of 10²⁶W/cm² in Europe (2010). By harmonic focusing for PFS the intensity can be concentrated to focused intensities of 10²⁹W/cm² in a small volume (ų) for a short time. Extrapolating for the Exawatt-laser 10³⁷W/cm² can be reached. This corresponds to electrical field strengths of 10¹⁸−10²²V/m, reaching beyond the Schwinger limit (1.8*10¹⁸V/m), where the vacuum becomes unstable against e⁺e⁻ decay. An electron is accelerated with a=10²⁸−10³²g resulting in an Unruh temperture of (100keV- 1GeV)/k. We want to measure this Unruh effect for the first time and study entangled EPR-photons. For these very large accelerations it becomes possible to study these effects of quantum mechanics, general relativity and event horizon for the first time in the laboratory. At 1 GeV temperature also many correlated π-pairs will occur, opening new perspectives for testing chiral symmetry breaking. If we apply the field strength of up to 10 MeV/fm to a heavy nucleus many protons will be extracted and for heavier elements extremely neutron-rich nuclei close to the drip line will be produced, which cannot be reached by classical techniques. With such examples we want to illustrate the new approaches which become possible for ultra-high fields. *Supported by DFG under contract no. TR18