金属纳米结构下气体位置对谐波截止能量的影响

Effect of Gas Position in Metal Nanostructure on Harmonic Cutoff Energy

理论研究了3种不同金属纳米结构下气体位置对谐波截止能量的影响。结果显示,谐波截止能量随着气体位置远离中心点而呈现先增大再减小的现象。并且气体在特定位置时会呈现最大谐波截止能量。这一阈值能量随纳米结构增宽而增大。通过分析电子在纳米结构中的运动,给出了谐波截止能量随气体位置变化及产生谐波截止能量阈值的原因。

The effect of gas position in 3 different metal nanostructure on harmonic cutoff energy has been theoretically studied.The results show that the harmonic cutoff energy is first extended and then decreased as gas position keeps away from the central point.Moreover,the maximum harmonic cutoff can be found at the specific gas position.This threshold energy can be extended as metal nanostructure broadens.Finally,through analyzing the electron motion in the nanostructure,the reasons behind the harmonic cutoff extension as gas position changes and the generation of the threshold harmonic cutoff energy have been given.