Rovibrationally Resolved Time-Dependent Collisional-Radiative Model of Molecular Hydrogen and Its Application to a Fusion Detached Plasma

Abstract

Abstract:A novel rovibrationally resolved collisional-radiative model of molecular hydrogen that includes 4,133 rovibrational levels for electronic states whose united atom principal quantum number is below six is developed. The rovibrational X 1 Σ + g population distribution in a SlimCS fusion demo detached divertor plasma is investigated by solving the model time dependently with an initial 300 K Boltzmann distribution. The effective reaction rate coefficients of molecular assisted recombination and of other processes in which atomic hydrogen is produced are calculated using the obtained time-dependent population distribution.

Electron-impact dissociative excitation cross sections for singlet states of molecular hydrogen

“…It is a significant mechanism for molecular break-up in the interstellar medium [1,2], and a contributing factor to the hot atomic hydrogen plume observed in the Saturnian atmosphere [3,4]. Furthermore, DE is a fundamental process in collisional-radiative models [5], and the production of energetic atomic hydrogen [6] in fusion plasmas.…”

Isotope effect of rovibrational distribution of hydrogen molecules desorbed from amorphous carbon

“…Before describing the results, we explain the approximation to obtain the quantum dis- rovibrational state (𝑣, 𝐽) and each kind of isotopes 𝑘= H 2 , D 2 , and T 2 , is calculated by solving the following Schrödinger equation of two particle systems with the Numerov method: 2,19,34) {…”

Yacora on the Web: Online collisional radiative models for plasmas containing H, H2 or He

“…The same holds for helium atom: the development of CR models started early [23] and a multitude of models are available now [24,25,26,27]. Despite the higher complexity, also several different CR models for H2 are available [28,29,30,31,32]. Given here is a short introduction into the CR models for these species available via Yacora on the Web.…”