Stationary afterglow apparatus with CRDS for study of processes in plasmas from 300 K down to 30 K

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F18%3A10386159" target="_blank" >RIV/00216208:11320/18:10386159 - isvavai.cz</a>

Result on the web

<a href="https://doi.org/10.1063/1.5036834" target="_blank" >https://doi.org/10.1063/1.5036834</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1063/1.5036834" target="_blank" >10.1063/1.5036834</a>

Result language

angličtina

Original language name

Stationary afterglow apparatus with CRDS for study of processes in plasmas from 300 K down to 30 K

Original language description

A cryogenic stationary afterglow apparatus equipped with a near-infrared cavity-ring-downspectrometer (Cryo-SA-CRDS) for studies of electron-ion recombination processes in the plasma at temperatures 30-300 K has been designed, constructed, tested, and put into operation. The plasma is generated in a sapphire discharge tube that is contained in a microwave cavity. The cavity and the tube are attached to the second stage of the cold head of the cryocooler system, and they are inserted to an UHV chamber with mirrors for CRDS and vacuum windows on both ends of the tube. The temperature of the discharge tube can be made as low as 25 K. In initial test measurements, the discharge was ignited in He/Ar/H-2 or He/H-2 gas mixtures and the density of H-3(+) ions and their kinetic and rotational temperatures were measured during the discharge and afterglow. From the measured decrease in the ion density, during the afterglow, effective recombination rate coefficients were determined. Plasma relaxation was studied in He/Ar gas mixtures by monitoring the presence of highly excited argon atoms. The spectroscopic measurements demonstrated that the kinetic temperature of the ions is equal to the gas temperature and that it can be varied from 300 K down to 30 K. Published by AIP Publishing.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10305 - Fluids and plasma physics (including surface physics)

Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

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

Publication year

2018

Confidentiality

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

Name of the periodical

Review of Scientific Instruments

ISSN

0034-6748

e-ISSN

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Volume of the periodical

89

Issue of the periodical within the volume

6

Country of publishing house

US - UNITED STATES

Number of pages

11

Pages from-to

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UT code for WoS article

000437195200016

EID of the result in the Scopus database

2-s2.0-85048684779