Radiative Charge Transfer between Metastable Helium and Lithium Cations

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10384682" target="_blank" >RIV/00216208:11320/18:10384682 - isvavai.cz</a>

Výsledek na webu

<a href="https://doi.org/10.3847/1538-4357/aae64f" target="_blank" >https://doi.org/10.3847/1538-4357/aae64f</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3847/1538-4357/aae64f" target="_blank" >10.3847/1538-4357/aae64f</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Radiative Charge Transfer between Metastable Helium and Lithium Cations

Popis výsledku v původním jazyce

Depopulation of long-lived metastable helium He(2(3)S) by spontaneous radiative charge transfer in collisions with lithium cations Li+ is investigated using a fully quantal approach. The corresponding transitions start in continuum states of the initial electronic state b(3)Sigma(+) and end in continuum states of the final electronic state a(3)Sigma(+). The process is characterized by cross sections and rate coefficients, which are calculated as functions of initial collision energy and temperature, respectively. Particular consideration is paid to the proper description of the high-energy cross sections in order to include their contributions to the total rate coefficient at high temperatures, where its asymptotic behavior is analyzed. The calculated total rate coefficients are in the range 1.75 x 10(-15) - 3.16 x 10(-14) cm(3) s(-1). The comparison with other relevant depopulation mechanisms shows that the radiative processes prevail for temperatures below 3000 K, while at higher temperatures the nonradiative inelastic processes are dominant.

Název v anglickém jazyce

Radiative Charge Transfer between Metastable Helium and Lithium Cations

Popis výsledku anglicky

Depopulation of long-lived metastable helium He(2(3)S) by spontaneous radiative charge transfer in collisions with lithium cations Li+ is investigated using a fully quantal approach. The corresponding transitions start in continuum states of the initial electronic state b(3)Sigma(+) and end in continuum states of the final electronic state a(3)Sigma(+). The process is characterized by cross sections and rate coefficients, which are calculated as functions of initial collision energy and temperature, respectively. Particular consideration is paid to the proper description of the high-energy cross sections in order to include their contributions to the total rate coefficient at high temperatures, where its asymptotic behavior is analyzed. The calculated total rate coefficients are in the range 1.75 x 10(-15) - 3.16 x 10(-14) cm(3) s(-1). The comparison with other relevant depopulation mechanisms shows that the radiative processes prevail for temperatures below 3000 K, while at higher temperatures the nonradiative inelastic processes are dominant.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

<a href="/cs/project/GA15-10267S" target="_blank" >GA15-10267S: Molekulární procesy ve vesmíru</a><br>

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

Astrophysical Journal

ISSN

0004-637X

e-ISSN

—

Svazek periodika

867

Číslo periodika v rámci svazku

2

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

6

Strana od-do

—

Kód UT WoS článku

000450221700024

EID výsledku v databázi Scopus

2-s2.0-85056734755