Journal article
Theoretical description of dissociative γ → 2γ' scattering in diatomic molecules
Publication Details
Authors: | Jänkälä, K.; Demekhin, P.; Heinäsmäki, S.; Haar, I.; Hentges, R.; Ehresmann, A. |
Publication year: | 2010 |
Journal: | Journal of Physics B: Atomic, Molecular and Optical Physics |
Pages range : | 065104 |
Volume number: | 43 |
ISSN: | 0953-4075 |
Abstract
The paper describes the theoretical formulation of dissociative γ → 2γ' scattering in fixed-in-space and randomly oriented diatomic molecules in the dipole approximation for excitation and 2γ' production. Based on perturbation theory the double-differential cross section and the two-photon angular correlation function of the process is derived. The developed theory is applied to study the angular correlation function of the two Lyman-α photons produced via decay of the doubly excited Q21Πu(1) state of the H2 molecule.
The paper describes the theoretical formulation of dissociative γ → 2γ' scattering in fixed-in-space and randomly oriented diatomic molecules in the dipole approximation for excitation and 2γ' production. Based on perturbation theory the double-differential cross section and the two-photon angular correlation function of the process is derived. The developed theory is applied to study the angular correlation function of the two Lyman-α photons produced via decay of the doubly excited Q21Πu(1) state of the H2 molecule.
