Nondipole asymmetries of K-shell photoelectrons of Kr, Br2, and BrCF3

The nondipole asymmetries of Kr 1s and Br K-shell photoelectrons of Br2 and BrCF3 were measured and compared with first-order retardation calculations within the independent-particle approximation. The measured asymmetries agree well with calculations and demonstrate the importance of screening on the normalizations and phase shifts of the continuum functions. Only small deviations are observed between the molecular Br K-shell measurements and calculations for atomic Br 1s nondipole asymmetries.