TITLE

# Generating positrons with femtosecond-laser pulses

AUTHOR(S)
Gahn, C.; Tsakiris, G. D.; Pretzler, G.; Witte, K. J.; Delfin, C.; Wahlstro¨m, C.-G.; Habs, D.
PUB. DATE
October 2000
SOURCE
Applied Physics Letters;10/23/2000, Vol. 77 Issue 17
SOURCE TYPE
DOC. TYPE
Article
ABSTRACT
Utilizing a femtosecond table-top laser system, we have succeeded in converting via electron acceleration in a plasma channel, low-energy photons into antiparticles, namely positrons. The average intensity of this source of positrons is estimated to be equivalent to 2x10[sup 8] Bq and it exhibits a very favorable scaling for higher laser intensities. The advent of positron production utilizing femtosecond laser pulses may be the forerunner to a table-top positron source appropriate for applications in material science, and fundamental physics research like positronium spectroscopy. Â© 2000 American Institute of Physics.
ACCESSION #
4414667

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