Few-photon multiple ionization of Ne and Ar by strong free-electron-laser pulses

被引：138

作者：

Moshammer, R.

Jiang, Y. H.

Foucar, L.

Rudenko, A.

Ergler, Th.

Schroeter, C. D.

Luedemann, S.

Zrost, K.

Fischer, D.

Titze, J.

Jahnke, T.

Schoeffler, M.

Weber, T.

Doerner, R.

Zouros, T. J. M.

Dorn, A.

Ferger, T.

Kuehnel, K. U.

Duesterer, S.

Treusch, R.

Radcliffe, P.

Ploenjes, E.

Ullrich, J.

机构：

[1] Max Planck Inst Kernphys, D-69117 Heidelberg, Germany

[2] Univ Frankfurt, Inst Kernphys, D-60486 Frankfurt, Germany

[3] Stockholm Univ, Alba Nova Univ Centrum, S-10691 Stockholm, Sweden

[4] DESY, D-22607 Hamburg, Germany

[5] Univ Crete, Dept Phys, Iraklion 71003, Greece

[6] Inst Elect Struct & Laser, Iraklion 71110, Greece

来源：

PHYSICAL REVIEW LETTERS | 2007年 / 98卷 / 20期

关键词：

D O I：

10.1103/PhysRevLett.98.203001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Few-photon multiple ionization of Ne and Ar atoms by strong vacuum ultraviolet laser pulses from the free-electron laser at Hamburg was investigated differentially with the Heidelberg reaction microscope. The light-intensity dependence of Ne2+ production reveals the dominance of nonsequential two-photon double ionization at intensities of I < 6x10(12) W/cm(2) and significant contributions of three-photon ionization as I increases. Ne2+ recoil-ion-momentum distributions suggest that two electrons absorbing "instantaneously" two photons are ejected most likely into opposite hemispheres with similar energies.

引用

页数：4

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