Electron-ion recombination in low temperature hydrogen/deuterium plasma

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10371710" target="_blank" >RIV/00216208:11320/18:10371710 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1051/epjap/2017170228" target="_blank" >http://dx.doi.org/10.1051/epjap/2017170228</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1051/epjap/2017170228" target="_blank" >10.1051/epjap/2017170228</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Electron-ion recombination in low temperature hydrogen/deuterium plasma

Popis výsledku v původním jazyce

The stationary afterglow with cavity ring down spectrometer (SA-CRDS) was used to study the recombination of H-3(+), H2D+, HD2+ and D-3(+) ions with electrons in low temperature (77-300 K) plasmas in He/Ar/ H-2/D-2 gas mixtures. By measuring effective recombination rate coefficients (alpha(eff)) in plasma with mixtures of ions and their dependences on temperature and partial densities of He, H-2 and D-2, alpha(eff) (T, [He],[H-2],[D-2]), we determined binary (alpha(binH3), alpha(binH2D), alpha(binHD2), alpha(binD3)) and ternary (K-H3, K-H2D, K-HD2, K-D3) recombination rate coefficients for H-3(+), H2D+, HD2+ and D-3(+) ions. For all four ions we observed very efficient He assisted ternary recombination which is comparable with binary recombination already at [He] = 1 x 10(17) cm(-3). The removal of excited particles in afterglow plasma was monitored to obtain the plasma thermalisation rate at given experimental conditions. The inferred deexcitation rates for reaction of helium metastable atoms with D-2 are k(D2) (300 K)=(2.1 +/- 0.3) x 10(-10) cm(3) s(-1) and k(D2) (140 K)=(1.3 +/- 0.3) x 10(-10) cm(3) s(-1).

Název v anglickém jazyce

Electron-ion recombination in low temperature hydrogen/deuterium plasma

Popis výsledku anglicky

The stationary afterglow with cavity ring down spectrometer (SA-CRDS) was used to study the recombination of H-3(+), H2D+, HD2+ and D-3(+) ions with electrons in low temperature (77-300 K) plasmas in He/Ar/ H-2/D-2 gas mixtures. By measuring effective recombination rate coefficients (alpha(eff)) in plasma with mixtures of ions and their dependences on temperature and partial densities of He, H-2 and D-2, alpha(eff) (T, [He],[H-2],[D-2]), we determined binary (alpha(binH3), alpha(binH2D), alpha(binHD2), alpha(binD3)) and ternary (K-H3, K-H2D, K-HD2, K-D3) recombination rate coefficients for H-3(+), H2D+, HD2+ and D-3(+) ions. For all four ions we observed very efficient He assisted ternary recombination which is comparable with binary recombination already at [He] = 1 x 10(17) cm(-3). The removal of excited particles in afterglow plasma was monitored to obtain the plasma thermalisation rate at given experimental conditions. The inferred deexcitation rates for reaction of helium metastable atoms with D-2 are k(D2) (300 K)=(2.1 +/- 0.3) x 10(-10) cm(3) s(-1) and k(D2) (140 K)=(1.3 +/- 0.3) x 10(-10) cm(3) s(-1).

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10305 - Fluids and plasma physics (including surface physics)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2018

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

EPJ Applied Physics

ISSN

1286-0042

e-ISSN

—

Svazek periodika

80

Číslo periodika v rámci svazku

3

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

5

Strana od-do

—

Kód UT WoS článku

000423458900001

EID výsledku v databázi Scopus

2-s2.0-85041297511