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Efficient atomization of cesium metal in solid helium by low energy (10 μJ) femtosecond pulses

  • M. Melich
  • J. Dupont-RocEmail author
  • Ph. Jacquier
Atomic Physics

Abstract

Metal atoms in solid and liquid helium-4 have attracted some interest either as a way to keep the atoms in a weakly perturbing matrix, or using them as a probe for the helium host medium. Laser sputtering with nanosecond pulsed lasers is the most often used method for atom production, resulting however in a substantial perturbation of the matrix. We show that a much weaker perturbation can be obtained by using femtosecond laser pulses with energy as low as 10 μJ. As an unexpected benefit, the atomic density produced is much higher.

PACS

67.80.B- Solid 4He 61.72.S- Impurities in crystals 06.60.Jn High-speed techniques 

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Copyright information

© EDP Sciences, SIF, Springer-Verlag Berlin Heidelberg 2009

Authors and Affiliations

  1. 1.Laboratoire Kastler Brossel, ENS, UPMC-Paris 6, CNRSParisFrance

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