Caustics and catastrophes in above-threshold ionization

被引：18

作者：

Kelvich, S. A. ^{[1
]}

Becker, W. ^{[1
,2
]}

Goreslavski, S. P. ^{[1
]}

机构：

[1] Natl Res Nucl Univ MEPhI, Kashirskoe Shosse 31, Moscow 115409, Russia

[2] Max Born Inst, Max Born Str 2a, D-12489 Berlin, Germany

来源：

PHYSICAL REVIEW A | 2017年 / 96卷 / 02期

关键词：

FIELD; INTENSE; ATOMS; SPECTRA; WAVE;

D O I：

10.1103/PhysRevA.96.023427

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Low-energy above-threshold ionization by a midinfrared laser field is investigated in terms of a commonly used semiclassical model. The mapping of the initial conditions (initial transverse velocity and initial phase of the field) on the final drift momenta that is mediated by Newton's equation of motion is approximated by three Coulomb interactions, which occur at the exit of the tunnel and during the subsequent hard and soft interactions that occur when the electron revisits the ion. The mapping exhibits a particular caustic structure in the area of the low-energy structure, which has the shape of the butterfly catastrophe.

引用

页数：5

共 42 条

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