Jet-like structures in photoelectron angular distributions *Wang Yi(王 懿) a)b) , Zhang Jing-Tao(张敬涛) a) † , Ren Xiang-He(任向河) a) , and Xu Zhi-Zhan(徐至展) a)

This paper uses a nonperturbative scattering theory to study photoelectron angular distributions of homonuclear diatomic molecules irradiated by circularly polarized laser fields. This study shows that the nonisotropic feature of photoelectron angular distributions is not due to the polarization of the laser field but the internuclear vector of the molecules. It suggests a method to measure the molecular orientation and the internuclear distance of molecules through the measurement of photoelectron angular distributions.