Work

Photodissociation Processes Involving the SiH+ Molecular Ion: New Datasets for Modeling

Year: 2025

Type: article

Abstract: This paper investigates the photodissociation of the SiH+ molecular ion, a non-symmetric diatomic species composed of silicon and hydrogen. We provide calculated molecular data and characterize electronic states, deriving cross-sections and spectral absorption rate coefficients as functions of temperature (1000–10,000 K) and EUV and UV wavelength. The calculations are performed within a quantum–mechanical framework of bound–free radiative transitions, using ab initio electronic potentials and dipole transition functions as inputs. In addition, we present a straightforward fitting formula that enables practical interpolation of photodissociation cross-sections and spectral rate coefficients, providing a novel closed-form representation of the dataset for modeling purposes. The resulting dataset provides a consistent and accessible reference for advanced photochemical modeling in laboratory plasmas and astrophysical environments.

Source: Data

DOI: 10.3390/data10110185

Authors: V. A. Srećković, H. Delibašić-Marković, L. M. Ignjatović, V. Petrović, V. Vujčić

Institutions: University of Belgrade, Institute of Physics Belgrade, University of Kragujevac

Language: English

Topic: Atomic and Molecular Physics

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: gold

Estimated APC paid: $1,930

Funders: Institute of Physics Belgrade, Ministarstvo Prosvete, Nauke i Tehnološkog Razvoja, Science Fund of the Republic of Serbia