Complete reconstruction of bound and unbound electronic wavefunctions in two-photon double ionization

被引：23

作者：

Carpeggiani, P. A. ^{[1
,2
]}

Gryzlova, E., V ^{[3
]}

Reduzzi, M. ^{[1
,2
]}

Dubrouil, A. ^{[1
]}

Facciala, D. ^{[1
,2
]}

Negro, M. ^{[1
,2
]}

Ueda, K. ^{[4
]}

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

Frassetto, F. ^{[6
]}

Stienkemeier, F. ^{[7
]}

Ovcharenko, Y. ^{[8
,9
]}

Meyer, M. ^{[9
]}

Plekan, O. ^{[10
]}

Finetti, P. ^{[10
]}

Prince, K. C. ^{[10
]}

Callegari, C. ^{[10
]}

Grum-Grzhimailo, A. N. ^{[3
]}

Sansone, G. ^{[7
]}

机构：

[1] Politecn Milan, Dipartimento Fis, Milan, Italy

[2] IFN CNR Politecn, Milan, Italy

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

[4] Tohoku Univ, Inst Multidisciplinary Res Adv Mat, Sendai, Miyagi, Japan

[5] Pacific Natl Univ, Khabarovsk, Russia

[6] IFN CNR, Padua, Italy

[7] Albert Ludwigs Univ Freiburg, Phys Inst, Freiburg, Germany

[8] TU Berlin, Inst Opt & Atomare Phys, Berlin, Germany

[9] European XFEL, Schenefeld, Germany

[10] Elettra Sincrotrone Trieste, Trieste, Italy

来源：

NATURE PHYSICS | 2019年 / 15卷 / 02期

基金：

欧洲研究理事会;

关键词：

ANGULAR-DISTRIBUTION; CHARGED IONS; PHOTOIONIZATION PROCESS; SPIN POLARIZATION; PHASE DIFFERENCES; MATRIX-ELEMENTS; XENON ATOMS; PHOTOELECTRONS; DISTRIBUTIONS; STATES;

D O I：

10.1038/s41567-018-0340-4

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

To be complete, the characterization of the photoionization process of atoms and molecules requires the extraction of all quantum-mechanical phases and amplitudes. So far, complete experiments have accessed only the ionization process of neutral atoms and molecules. Here we report the quantum-mechanically complete characterization of the single and double ionization of neon to yield doubly charged ions. The first ionization step by intense, polarized extreme ultraviolet light from a free-electron laser leaves the ion in a polarized state (that is, one in which the angular momentum of the ion is aligned in space). By controlling the polarization of the light, we determine the bound and continuum components of the system in the first and second ionization steps leading to the formation of doubly charged neon ions. We test the validity of our approach by characterizing the influence of autoionizing ionic states on the two-photon double-ionization mechanism. Our results are important for understanding the physics of the interaction of extreme ultraviolet radiation with ions.

引用

页码：170 / +

页数：9

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