从实验三维图反求离子的能量分布 :阿贝尔变换和图像积分(英文)

Retrieving Ion Energy Distribution from Measured 3-D Image:Abel Inversion and Image Integration

在强光场作用下 ,分子的电离或离解产物通常具有一能量分布。为从获得的三维图像求得离子产额随能量的分布关系 ,我们开发了借助阿贝尔变换和图像积分的可行方法。计算机数值模拟证明该方法切实可行 。

In studying ionization and/or dissociation of molecules irradiated with intense laser fields, the generated ionic fragments usually have a range of energies. It is of fundamental significance to get ion population expressed as a function of energy for gaining further information such as ionization rate, critical internuclear separation and so on. In processing the acquired spatial images, we have developed a systematic and effective method for extracting ion energy information from the experimentally measured 3-D image by making use of Abel inversion and image integration. The proposed method was tested to be robust by applying to our real data.