利用He+离子链模型增强谐波辐射强度

Enhancement of harmonic intensity by using He+ ion chain model

摘要:

本文提出一种利用He+离子链模型来增强谐波辐射强度的方案。通过求解薛定谔方程，理论模拟了单个He+离子以及He+离子链辐射谐波的特点，并结合电离几率，谐波辐射时频分析图，含时电子波包运动分析了谐波辐射及电子运动过程。计算结果表明，使用He+离子链模型可以有效增强谐波强度以及延伸谐波截止能量。

Abstract:

In the present paper, we propose an effective method to enhance the intensity of the harmonic spectrum by using the He+ ion chain model. Through solving the time-dependent Schrödinger equation, the harmonic spectra from the single He+ ion and the He+ ion chain have been theoretically calculated. Moreover, the ionization probabilities, the time-frequency analyses of the harmonic spectra and the time dependent wave functions have been used to explain the harmonic emission process and the electron motion. Results show that the harmonic intensity can be remarkably enhanced and the harmonic cutoff can be extended.