Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy

the LHD Experiment Group

doi:10.1016/j.jqsrt.2021.107592

Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy

the LHD Experiment Group

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Wide wavelength range with high-resolution emission spectroscopy was applied to LHD peripheral plasmas. All measured Fulcher-a band Q-branches spectra (600–630 nm) were measured with a single shot exposure time of 100–200 ms for all investigated discharges. Ro-vibrational populations up to v = 2 and N = 11 for H₂ and up to v = 3 and N = 14 for D₂ in the 3p³Π_u state were estimated, where v and N are vibrational and rotational quantum numbers, respectively. It was found that the rotational population of every vibrational state follows two-temperature Boltzmann distribution. From the calculation with a coronal model, ro-vibrational populations distribution up to such high N quantum numbers in the ground state are deduced.

Original language	English
Article number	107592
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	267
DOIs	https://doi.org/10.1016/j.jqsrt.2021.107592
State	Published - Jun 2021
Externally published	Yes

Funding

This work has been financially supported by the NIFS Collaborative Research Program NIFS16KOAP031 and by Grant-in-Aid for Scientific Research, Nos. 20K20962 , and 19H01878 from the Japan Society for the Promotion of Science.

Funders	Funder number
Japan Society for the Promotion of Science

Keywords

Fulcher-a band
Hydrogen molecule isotope
Large helical device
Ro-vibrational population

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10.1016/j.jqsrt.2021.107592

Cite this

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title = "Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy",

abstract = "Wide wavelength range with high-resolution emission spectroscopy was applied to LHD peripheral plasmas. All measured Fulcher-a band Q-branches spectra (600–630 nm) were measured with a single shot exposure time of 100–200 ms for all investigated discharges. Ro-vibrational populations up to v = 2 and N = 11 for H2 and up to v = 3 and N = 14 for D2 in the 3p3Πu state were estimated, where v and N are vibrational and rotational quantum numbers, respectively. It was found that the rotational population of every vibrational state follows two-temperature Boltzmann distribution. From the calculation with a coronal model, ro-vibrational populations distribution up to such high N quantum numbers in the ground state are deduced.",

keywords = "Fulcher-a band, Hydrogen molecule isotope, Large helical device, Ro-vibrational population",

author = "{the LHD Experiment Group} and Hiroki Ishihara and Arseniy Kuzmin and Masahiro Kobayashi and Taiichi Shikama and Keiji Sawada and Seiki Saito and Hiroaki Nakamura and Keisuke Fujii and Masahiro Hasuo",

note = "Publisher Copyright: {\textcopyright} 2021",

year = "2021",

month = jun,

doi = "10.1016/j.jqsrt.2021.107592",

language = "English",

volume = "267",

journal = "Journal of Quantitative Spectroscopy and Radiative Transfer",

issn = "0022-4073",

publisher = "Elsevier",

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TY - JOUR

T1 - Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy

AU - the LHD Experiment Group

AU - Ishihara, Hiroki

AU - Kuzmin, Arseniy

AU - Kobayashi, Masahiro

AU - Shikama, Taiichi

AU - Sawada, Keiji

AU - Saito, Seiki

AU - Nakamura, Hiroaki

AU - Fujii, Keisuke

AU - Hasuo, Masahiro

PY - 2021/6

Y1 - 2021/6

N2 - Wide wavelength range with high-resolution emission spectroscopy was applied to LHD peripheral plasmas. All measured Fulcher-a band Q-branches spectra (600–630 nm) were measured with a single shot exposure time of 100–200 ms for all investigated discharges. Ro-vibrational populations up to v = 2 and N = 11 for H2 and up to v = 3 and N = 14 for D2 in the 3p3Πu state were estimated, where v and N are vibrational and rotational quantum numbers, respectively. It was found that the rotational population of every vibrational state follows two-temperature Boltzmann distribution. From the calculation with a coronal model, ro-vibrational populations distribution up to such high N quantum numbers in the ground state are deduced.

AB - Wide wavelength range with high-resolution emission spectroscopy was applied to LHD peripheral plasmas. All measured Fulcher-a band Q-branches spectra (600–630 nm) were measured with a single shot exposure time of 100–200 ms for all investigated discharges. Ro-vibrational populations up to v = 2 and N = 11 for H2 and up to v = 3 and N = 14 for D2 in the 3p3Πu state were estimated, where v and N are vibrational and rotational quantum numbers, respectively. It was found that the rotational population of every vibrational state follows two-temperature Boltzmann distribution. From the calculation with a coronal model, ro-vibrational populations distribution up to such high N quantum numbers in the ground state are deduced.

KW - Fulcher-a band

KW - Hydrogen molecule isotope

KW - Large helical device

KW - Ro-vibrational population

UR - http://www.scopus.com/inward/record.url?scp=85102335089&partnerID=8YFLogxK

U2 - 10.1016/j.jqsrt.2021.107592

DO - 10.1016/j.jqsrt.2021.107592

M3 - Article

AN - SCOPUS:85102335089

SN - 0022-4073

VL - 267

JO - Journal of Quantitative Spectroscopy and Radiative Transfer

JF - Journal of Quantitative Spectroscopy and Radiative Transfer

M1 - 107592

ER -

Ro-vibrational population distribution in the ground state of hydrogen isotopologues in LHD peripheral plasmas deduced from emission spectroscopy

Abstract

Funding

Keywords

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