Intense-field multiphoton ionization of a two-electron atom

被引：108

作者：

Parker, J ^{[1
]}

Taylor, KT ^{[1
]}

Clark, CW ^{[1
]}

BlodgettFord, S ^{[1
]}

机构：

[1] NATL INST STAND & TECHNOL,PHYS LAB,GAITHERSBURG,MD 20899

来源：

JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS | 1996年 / 29卷 / 02期

关键词：

TIME-DEPENDENT THEORY; HARTREE-FOCK THEORY; STRONG LASER FIELD; HARMONIC-GENERATION; RARE-GASES; HELIUM; XENON;

D O I：

10.1088/0953-4075/29/2/002

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Multiphoton ionization of helium at high laser intensities has been investigated by direct numerical integration of the full time-dependent two-electron Schrodinger equation on a Gray T3D. At held intensities above 4 x 10(14) W cm(-2), two-photon ionization occurs in a few field periods, and double ionization and high harmonic generation are prominent. We present calculations of double ionization yields, investigate the sensitivity of double ionization to the electron-electron electrostatic repulsion, and present evidence of unexpected non-exponential behaviour in ionization decay rates.

引用

页码：L33 / L42

页数：10

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