Large nondipole effects in the angular distributions of K-shell photoelectrons from molecular nitrogen.
نویسندگان
چکیده
Measurements of angular distributions of K-shell electrons photoejected from molecular nitrogen are reported which reveal large deviations at relatively low photon energies (Planck's omega < or = 500 eV) from emission patterns anticipated from the dipole approximation to interactions between radiation and matter. A concomitant theoretical analysis incorporating the effects of electromagnetic retardation attributes the observed large nondipole behaviors in N2 to bond-length-dependent terms in the E1 [multiply sign in circle] (E2,M1) photoelectron emission amplitudes which are indicative of a potentially universal nondipole behavior in molecular photoionization.
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عنوان ژورنال:
- Physical review letters
دوره 87 27 Pt 1 شماره
صفحات -
تاریخ انتشار 2001