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

Details Efficient atomization of cesium metal in solid helium by low energy (10 $μ$J) femtosecond pulses Efficient atomization of cesium metal in solid helium by low energy (10 $μ$J) femtosecond pulses

2009-02-28

arxiv.org/abs/0903.0047v4

European Physical Journal D (2009) 1

Physics

Atomic and Molecular Clusters

Scientific paper

10.1140/epjd/e2009-00231-5

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 $\mu$J. As an unexpected benefit, the atomic density produced is much higher.

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