Berlin 2005 – wissenschaftliches Programm
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SYLP: Relativistische Laser-Plasma-Physik
SYLP 1: Relativistische Laser-Plasma-Physik 1
SYLP 1.4: Vortrag
Samstag, 5. März 2005, 11:20–11:40, HU Senatssaal
Pair production in a laser driven electron-electron collider * — •U. Schramm1, D. Habs1, R. Sauerbrey2, and H. Schwörer2 — 1LMU München, Department für Physik — 2IOQ, Universität Jena
At the IOQ Jena 10 TW laser, two parabolic focusing mirrors can provide
counterpropagating laser pulses focused into the same (gas) target area
to intensities above 1018 W/cm2, so that the precise
head-on collision of laser accelerated electron beams become possible.
In the electron-electron collisions, e+e− pairs are predicted to be
formed at a rate of the order of 1/s, emitted predominantly in forward
and backward direction at an energy around 200±100 keV. Thus
the reaction products are planed to be guided out of the target area
by magnetic fields for detection.
As the cross-section and the angular distribution of this reaction is
well understood, the measurement will provide the luminosity of the
colliding electron beams, an important input parameter for the anticipated
future production of short-lived exotic particles. One step further,
colliding backscattered photon beams could increase the reaction rate
by orderds of magnitude.
* funded by DFG Transregio TR18.