2 research outputs found
Towards laser based improved experimental schemes for multiphoton e+ e- pair production from vacuum
Numerical estimates for pair production from vacuum in the presence of strong
electromagnetic fields are derived, for two experimental schemes : the First
concerns a laser based X-FEL and the other imitates the E144 experiment. The
approximation adopted in this work is that of two level multiphoton on
resonance. Utilizing achievable values of laser beam parameters, an
enhancedproduction efficiency of up to 10^11 and 10^15 pairs can be obtained,
for the two schemes respectively.Comment: 6 pages, 4 figure
On electron-positron pair production using a two level on resonant multiphoton approximation
We present an indepth investigation of certain aspects of the two level on
resonant multiphoton approximation to pair production from vacuum in the
presence of strong electromagnetic fields. Numerical computations strongly
suggest that a viable experimental verification of this approach using modern
optical laser technology can be achieved. It is shown that use of higher
harmonic within the presently available range of laser intensities can lead to
multiphoton processes offering up to 10^12 pairs per laser shot. Finally the
range of applicability of this approximation is examined from the point of view
of admissible values of electric field strength and energy spectrum of the
created pairs.Comment: 10 pages, 5 figure