Emission of thermally activated electrons from rare gas clusters irradiated with intense VUV light pulses from a free electron laser -: art. no. 063402

被引：79

作者：

Laarmann, T

Rusek, M

Wabnitz, H

Schulz, J

de Castro, ARB

Gürtler, P

Laasch, W

Möller, T

机构：

[1] Max Born Inst, D-12489 Berlin, Germany

[2] Polish Acad Sci, Inst Phys, PL-02668 Warsaw, Poland

[3] CEA, SPAM, Ctr Etud Saclay, F-91191 Gif Sur Yvette, France

[4] Lund Univ, Max Lab, S-22100 Lund, Sweden

[5] Univ Estadual Campinas, IFGW, BR-13083970 Campinas, SP, Brazil

[6] LNLS, BR-13084971 Campinas, SP, Brazil

[7] DESY, D-22607 Hamburg, Germany

[8] Tech Univ Berlin, D-10623 Berlin, Germany

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 06期

关键词：

D O I：

10.1103/PhysRevLett.95.063402

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The ionization dynamics of Ar and Xe clusters irradiated with intense vacuum ultraviolet light from a free-electron laser is investigated using photoelectron spectroscopy. Clusters comprising between 70 and 900 atoms were irradiated with femtosecond pulses at 95 nm wavelength (similar to 13 eV photon energy) and a peak intensity of similar to 4x10(12) W/cm(2). A broad thermal distribution of emitted electrons from clusters with a maximum kinetic energy up to 30-40 eV is observed. The observation of relatively low-energy photoelectrons is in good agreement with calculations using a time-dependent Thomas-Fermi model and gives experimental evidence of an outer ionization process of the clusters, due to delayed thermoelectronic emission.

引用

页数：4

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