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arXiv physics/0502016physics.atom-ph

多光子电离的Lippmann-Schwinger描述

Lippmann-Schwinger description of multiphoton ionization

I. A. Ivanov, A. S. Kheifets

AI总结:

本文提出了一种基于Lippmann-Schwinger方程的非微扰方法,用于计算强激光场中原子的多光子电离过程的总和微分电离截面。

摘要:

我们概述了一种形式主义,并开发了一种计算程序,用于处理强激光场中原子靶的多光子电离(MPI)过程。我们将MPI过程非微扰地作为衰变现象来处理,通过求解一组耦合的积分Lippmann-Schwinger方程来处理。作为理论的基本构建块,我们使用一组完整的无场原子态,包括离散和连续态。这种方法应使我们能够提供具有一个或两个电子的原子的总电离截面和微分电离截面。作为示例,我们应用所提出的程序到一个简单的多光子电离平方井势模型和氢原子上。

英文摘要:

We outline a formalism and develop a computational procedure to treat the process of multiphoton ionization (MPI) of atomic targets in strong laser fields. We treat the MPI process nonperturbatively as a decay phenomenon by solving a coupled set of the integral Lippmann-Schwinger equations. As basic building blocks of the theory we use a complete set of field-free atomic states, discrete and continuous. This approach should enable us to provide both the total and differential cross-sections of MPI of atoms with one or two electrons. As an illustration, we apply the proposed procedure to a simple model of MPI from a square well potential and to the hydrogen atom.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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