Abstract
The N=1 and 2 series of the 1P0 helium states have been investigated by partial-wave analysis, and by observing the one-body densities, the radial-radial correlation functions and the shape-densities. The details of electron-electron correlation have been revealed. The features of structure of different subseries have been compared with each other. A broad radial-angular correlation region extending beyond the radial-radial correlation region has been found in the (1, 0)- and (-1, 0)0 states. It is also found that the anisotropism and the extent of distribution of the one-body density are closely related to the classification scheme.