A novel collisional radiative model with a numerical bottom and an analytical top

Abstract

. (1991). A novel collisional radiative model with a numerical bottom and an analytical top.

Steep plasma gradients studied with spatially resolved Thomson scattering measurements

“…The ionization (S CR ) and recombination (α CR ) coefficients can be calculated using a collisional radiative (CR) model [1,15,16]. Here we will use the CR model by Benoy et al for argon [15]. Although this paper is focused on argon plasmas, we will make the same estimation for a helium plasma, operating at the same conditions.…”

“…For argon the ion-atom collision integral is given by [17] Figure 1. The ionization coefficient as a function of the electron temperature for argon [15] and helium [16]. In the case of argon the ionization coefficient is given for two different escape factors for resonance radiation: esc = 1 (i.e.…”

“…The left-hand side represents the local net production. The ionization (S CR ) and recombination (α CR ) coefficients can be calculated using a collisional radiative (CR) model [1,15,16]. Here we will use the CR model by Benoy et al for argon [15].…”

Numerical simulation of a cascaded arc source with different Ar–H2 mixtures of nonlocal thermal equilibrium plasmas

“…Influence of excited states on step-wise ionization were treated in collisional-radiative ͑CR͒ model of Benoy et al 15 in such a way that the production of argon ions can be expressed in n e , n͑1͒ ͑argon atoms density in the ground state͒, and T e . Results of CR model are used in PLASIMO.…”

Diagnostics of Helium-Argon Arc Discharge Plasma Based on Spectral Line Shape Measurements

“…However, such models available in literature cannot be directly applied to our plasma, because they are valid for pure argon plasmas only -see for example Refs. [32][33][34][35]. Therefore, the temperatures evaluated by applying the Saha equation have to be regarded as the ones determining the lower limit for the electron temperature.…”