Signatures of autoionization in the angular electron distribution in two-photon double ionization of Ar

被引：11

作者：

Augustin, S. ^{[1
]}

Schulz, M. ^{[2
,3
]}

Schmid, G. ^{[1
]}

Schnorr, K. ^{[1
]}

Gryzlova, E., V ^{[4
]}

Lindenblatt, H. ^{[1
]}

Meister, S. ^{[1
]}

Liu, Y. F. ^{[1
]}

Trost, F. ^{[1
]}

Fechner, L. ^{[1
]}

Grum-Grzhimailo, A. N. ^{[4
]}

Burkov, S. M. ^{[5
]}

Braune, M. ^{[6
]}

Treusch, R. ^{[6
]}

Gisselbrecht, M. ^{[7
]}

Schroeter, C. D. ^{[1
]}

Pfeifer, T. ^{[1
]}

Moshammer, R. ^{[1
]}

机构：

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

[2] Missouri Univ Sci & Technol, Phys Dept, Rolla, MO 65409 USA

[3] Missouri Univ Sci & Technol, LAMOR, Rolla, MO 65409 USA

[4] Lomonosov Moscow State Univ, Skobeltsyn Inst Nucl Phys, Moscow 119991, Russia

[5] Pacific Natl Univ, Tihookeanskaya Str 139, Khabarovsk 680035, Russia

[6] DESY, Notkestr 85, D-22607 Hamburg, Germany

[7] Lund Univ, Solvegatan 14A, Lund, Sweden

来源：

PHYSICAL REVIEW A | 2018年 / 98卷 / 03期

关键词：

RARE-GASES; PHOTOIONIZATION; RESONANCES; ARGON;

D O I：

10.1103/PhysRevA.98.033408

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A kinematically complete experiment on two-photon double ionization of Ar by free-electron laser radiation with a photon energy of 27.93 eV was performed. The electron energy spectra show that double ionization is dominated by the sequential process. Comparison of the electron angular distributions to our data for single ionization and to theory confirms that even in the sequential process the electrons from both ionization steps are correlated with each other through polarization of the intermediate Ar+ state. Furthermore, a very important role of autoionization in both ionization steps is found.

引用

页数：7

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