Controlling Below-Threshold Nonsequential Double Ionization via Quantum Interference

被引：70

作者：

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

Faria, C. Figueira de Morisson ^{[1
]}

机构：

[1] UCL, Dept Phys & Astron, Gower St, London WC1E 6BT, England

来源：

PHYSICAL REVIEW LETTERS | 2016年 / 116卷 / 14期

基金：

英国工程与自然科学研究理事会;

关键词：

DYNAMICS; COULOMB;

D O I：

10.1103/PhysRevLett.116.143001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We show through simulation that quantum interference in nonsequential double ionization can be used to control the recollision excitation with subsequent ionization (RESI) mechanism. This includes the shape, localization, and symmetry of RESI electron-momentum distributions, which may be shifted from a correlated to an anticorrelated distribution or vice versa, far below the direct ionization threshold intensity. As a testing ground, we reproduce recent experimental results by employing specific coherent superpositions of excitation channels. We examine two types of interference, from electron indistinguishability and intracycle events, and from different excitation channels. These effects survive focal averaging and transverse-momentum integration.

引用

页数：6

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