Mechanisms of photo double ionization of helium by 530 eV photons -: art. no. 033004

被引：113

作者：

Knapp, A

Kheifets, A

Bray, I

Weber, T

Landers, AL

Schössler, S

Jahnke, T

Nickles, J

Kammer, S

Jagutzki, O

Schmidt, LPH

Osipov, T

Rösch, J

Prior, MH

Schmidt-Böcking, H

Cocke, CL

Dörner, R

机构：

[1] Goethe Univ Frankfurt, Inst Kernphys, D-60486 Frankfurt, Germany

[2] Australian Natl Univ, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia

[3] Murdoch Univ, Ctr Atom Mol & Surface Phys, Murdoch, WA 6150, Australia

[4] Western Michigan Univ, Dept Phys, Kalamazoo, MI 49008 USA

[5] Kansas State Univ, Dept Phys, Manhattan, KS 66506 USA

[6] Univ Calif Berkeley, Lawrence Berkeley Lab, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 03期

关键词：

D O I：

10.1103/PhysRevLett.89.033004

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We have measured fully differential cross sections for photo double ionization of helium 450 eV above the threshold. We have found an extremely asymmetric energy sharing between the photoelectrons and an angular asymmetry parameter betasimilar or equal to2 and betasimilar or equal to0 for the fast and slow electrons, respectively. The electron angular distributions show a dominance of the shakeoff for 2 eV electrons and clear evidence of an inelastic electron-electron scattering at an electron energy of 30 eV . The data are in excellent agreement with convergent close-coupling calculations.

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页码：330041 / 330044

页数：4

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