平面波近似在分子性质测量中的局限性
Limits of the Plane Wave Approximation in the Measurement of Molecular Properties
摘要：
再散射电子作为超快时间尺度上分子性质的探针提供了巨大的潜力。最著名的例子是分子层析成像，其中定向分子的高次谐波光谱被映射到相关分子轨道的“层析成像图像”。由于与母离子的相互作用，散射波函数从其渐近形式的失真可能会极大地影响这种重建的准确性。我们调查的有效性，常用的平面波近似分子断层扫描，显示这种扭曲如何影响所产生的轨道重建。
英文摘要：
Rescattering electrons offer great potential as probes of molecular properties on ultrafast timescales. The most famous example is molecular tomography, in which high harmonic spectra of oriented molecules are mapped to ``tomographic images'' of the relevant molecular orbitals. The accuracy of such reconstructions may be greatly affected by the distortion of scattering wavefunctions from their asymptotic forms due to interactions with the parent ion. We investigate the validity of the commonly used plane wave approximation in molecular tomography, showing how such distortions affect the resulting orbital reconstructions.
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