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arXiv 1002.2774physics.atom-ph
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类氢μ子原子在强laser场中谐振响应的同位素效应

Isotope effects in the harmonic response from hydrogenlike muonic atoms in strong laser fields

Atif Shahbaz, Thomas J. Buervenich, Carsten Müller

摘要:

计算了类氢μ子原子在超强高频激光场中的高次谐波产生。系统的低核电荷数Z被认为是适用于非相对论性的描述。通过比较不同同位素的辐射响应,我们展示了谐波谱中有限核质量和尺寸的特征签名。特别是当Z>1时,粒子相对运动的薛定谔方程中出现了一个有效μ子荷,它影响了谐波截止的位置。可以实现MeV域的截止能量,为产生超短相干伽马射线脉冲提供了前景。

英文摘要:

High-harmonic generation from hydrogenlike muonic atoms exposed to ultraintense high-frequency laser fields is calculated. Systems of low nuclear charge number Z are considered where a nonrelativistic description applies. By comparing the radiative response for different isotopes we demonstrate characteristic signatures of the finite nuclear mass and size in the harmonic spectra. In particular, for Z>1, an effective muon charge appears in the Schrödinger equation for the relative particle motion, which influences the position of the harmonic cutoff. Cutoff energies in the MeV domain can be achieved, offering prospects for the generation of ultrashort coherent gamma-ray pulses.

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