Determination of photodissociation and radiative association cross sections from the same time-dependent calculation

Abstract

We illustrate some of the difficulties that may be encountered when computing photodissociation and radiative association cross sections from the same time-dependent approach based on wavepacket propagation. The total and partial photodissociation cross sections from the thirty-three vibrational levels of the b triplet Σ+ state of HeH+ towards the 9 other triplet Σ+ and 6 triplet Π n = 2, 3 higher-lying electronic states are calculated. The corresponding radiative association cross sections are extracted from the same calculations, and the photodissociation and radiative association rate constants are determined.

17 pages, 6 figures

References in corpus (2)

• Photodissociation and radiative association of HeH+ in the metastable triplet state
• Molecular fluorine chemistry in the early Universe

Cited by in corpus (5)

• First astrophysical detection of the helium hydride ion (HeH${}^{+}$)
• Detection of vibrational emissions from the helium hydride ion (HeH${}^{+}$) in the planetary nebula NGC 7027
• Dissociative recombination of cold HeH${}^{+}$ ions
• HI-to-H${}_2$ Transitions in Dust-Free Interstellar Gas
• Revisiting the Formation of HeH${}^{+}$ in the Planetary Nebula NGC 7027