Electron and gas temperature dependences of the dissociative recombination coefficient of molecular ions {\rm Ne}_{2}^{+} with electrons

Abstract

This paper presents the measured values of the total dissociative recombination coefficient of molecular neon ions α (Ne + 2 ) as a function of both electron and gas temperatures. The measured recombination coefficient can be expressed as α Ne + 2 (T e , T g ) = (1.8 ± 0.2) × 10 −7 (T e /300 K) −0.42 (T g /300 K) −0.7 cm 3 s −1 in the temperature ranges 300 K T e 6300 K and 300 K T g 500 K.

Dependence of the dissociative recombination coefficient of molecular ions ${\rm Kr}_2^+$ with electrons on the electron and gas temperatures

“…The resonance frequency of the cavity was around 8.6 GHz. The quality factor of the cavity together with the discharge tube was around 1000 and did not change significantly with the electric oven temperature up to 650 K. A cutaway view of the open cylindrical cavity (in the TM 011 mode) together with waveguide sections is shown in our previous papers [13,14,21]. Our dual-mode X-band microwave afterglow apparatus, by which we are able to measure the decay of electron density and simultaneously and continuously heat the electrons during their decay by microwave power up to 900 mW, is also described there.…”

“…We have used the method of stationary afterglow of a dc pulsed discharge to study the recombination processes. A dualmode microwave afterglow apparatus in the X-band for the simultaneous measurements of electron and gas temperature dependences of the recombination coefficient was developed and described in more detail in our previous papers [13,14,21]. The time behaviour of electron density n e ( r, t) during the afterglow period of inert gases under simplified conditions and moderate pressures can be described by the continuity equation…”

“…It is seen that the variation of the electron (and also of the gas) temperature dependences of the dissociative recombination coefficients for Kr + 2 ions is similar, as in the case for argon and neon gases. In this paper, we present the first experimental results of the measurement of the dissociative recombination coefficient for krypton gas, when we vary both the electron and gas temperatures simultaneously and independently, as was carried out in our previous papers devoted to neon [13] and argon [14] gases.…”

I–V analysis for nuclear-excited low-temperature plasmas in porous metals

“…implying that plasma recombination processes are dominated by the dissociative recombination of molecular ion species. For the conditions under consideration (T e ∼ T a = 300 K, n a = 5 × 10 19 cm −3 ), k ic = (0.6-3.5) × 10 −31 cm 6 s −1 [4, chapter 4], and k dr,Ne + 2 = 1.8 × 10 −7 cm 3 s −1 [20], thus p a < 1 kW cm −3 for the n e = [a + 2 ] approximation is valid, which is satisfactory for even most pulsed nuclear reactor conditions. The solution to equation (9) is…”