Stabilization of H+-H-2 collision complexes between 11 and 28K

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F12%3A10130886" target="_blank" >RIV/00216208:11320/12:10130886 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1098/rsta.2012.0098" target="_blank" >http://dx.doi.org/10.1098/rsta.2012.0098</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1098/rsta.2012.0098" target="_blank" >10.1098/rsta.2012.0098</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Stabilization of H+-H-2 collision complexes between 11 and 28K

Popis výsledku v původním jazyce

Formation of H-3(+) via association of H+ with H-2 has been studied at low temperatures using a 22-pole radiofrequency trap. Operating at hydrogen number densities from 10(11) to 10(14) cm(-3), the contributions of radiative, k(r), and ternary, k(3), association have been extracted from the measured apparent binary rate coefficients, k* = k(r) + k(3)[H-2]. Surprisingly, k(3) is constant between 11 and 22 K, (2.6 +/- 0.8) x 10(-29) cm(6) s(-1), while radiative association decreases from k(r)(11 K)=(1.6 +/- 0.3) x 10(-16) cm(3) s(-1) to k(r)(28 K)= (5 +/- 2) x 10(-17) cm(3) s(-1). These results are in conflict with simple association models in which formation and stabilization of the complex are treated separately. Tentative explanations are based on thefact that, at low temperatures, only few partial waves contribute to the formation of the collision complex and that ternary association with H-2 may be quite inefficient because of the 'shared proton' structure of H-5(+).

Název v anglickém jazyce

Stabilization of H+-H-2 collision complexes between 11 and 28K

Popis výsledku anglicky

Formation of H-3(+) via association of H+ with H-2 has been studied at low temperatures using a 22-pole radiofrequency trap. Operating at hydrogen number densities from 10(11) to 10(14) cm(-3), the contributions of radiative, k(r), and ternary, k(3), association have been extracted from the measured apparent binary rate coefficients, k* = k(r) + k(3)[H-2]. Surprisingly, k(3) is constant between 11 and 22 K, (2.6 +/- 0.8) x 10(-29) cm(6) s(-1), while radiative association decreases from k(r)(11 K)=(1.6 +/- 0.3) x 10(-16) cm(3) s(-1) to k(r)(28 K)= (5 +/- 2) x 10(-17) cm(3) s(-1). These results are in conflict with simple association models in which formation and stabilization of the complex are treated separately. Tentative explanations are based on thefact that, at low temperatures, only few partial waves contribute to the formation of the collision complex and that ternary association with H-2 may be quite inefficient because of the 'shared proton' structure of H-5(+).

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

BL - Fyzika plasmatu a výboje v plynech

OECD FORD obor

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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)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název periodika

Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences

ISSN

1364-503X

e-ISSN

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Svazek periodika

370

Číslo periodika v rámci svazku

1978

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

5066-5073

Kód UT WoS článku

000309522800007

EID výsledku v databázi Scopus

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