Abstract: Photodissociation regions (PDRs) define the transition zone between an ionized and a dark molecular region. They consist of neutral gas which interacts with far-ultraviolet radiation and are ...

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It results in the formation of regions in which the gas is ionized, beyond which are photodissociation regions (PDRs) in which the gas transitions to its atomic and molecular form. Several numerical ...

We calculate vibrational spectra, ro-vibrational spectra, photodissociation cross sections, and reaction rate constants. The quantum description of vibrational and ro-vibrational states is a subject ...