arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 0908.2575physics.atom-phphysics.chem-phphysics.optics
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光电子动量空间层析成像

Momentum space tomographic imaging of photoelectrons

C Smeenk, L Arissian, A Staudte, D M Villeneuve, P B Corkum

摘要:

我们应用层析成像,重建3-D分布从多个投影的一般方法,重建通过强场光电离产生的电子的动量分布。投影是通过旋转的电子分布通过电离激光束的偏振,并记录在每个角度的动量谱与2-D速度图成像光谱仪。对于线偏振光的层析重建同意使用阿贝尔反演获得的分布。电子层析成像技术可以应用于任何极化状态,它将简化电子成像技术。该方法可直接推广到其它带电粒子。

英文摘要:

We apply tomography, a general method for reconstructing 3-D distributions from multiple projections, to reconstruct the momentum distribution of electrons produced via strong field photoionization. The projections are obtained by rotating the electron distribution via the polarization of the ionizing laser beam and recording a momentum spectrum at each angle with a 2-D velocity map imaging spectrometer. For linearly polarized light the tomographic reconstruction agrees with the distribution obtained using an Abel inversion. Electron tomography, which can be applied to any polarization, will simplify the technology of electron imaging. The method can be directly generalized to other charged particles.

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