Details

Autor(en) / Beteiligte

• Ishihara, Hiroki
• Kuzmin, Arseniy
• Kobayashi, Masahiro
• Shikama, Taiichi
• Sawada, Keiji
• Saito, Seiki
• Nakamura, Hiroaki
• Fujii, Keisuke
• Hasuo, Masahiro

Titel

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

Ist Teil von

• Journal of quantitative spectroscopy & radiative transfer, 2021-06, Vol.267, p.107592, Article 107592

Ort / Verlag

Elsevier Ltd

Erscheinungsjahr

2021

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• •Ro-vibrational population distributions of H2 and D2 in LHD peripheral plasmas were estimated from Fulcher-α Q-branch emission spectra.•Ro-vibrational populations up to v = 2 and n = 11 of H2 and up to v = 3 and n = 14 of D2 in the ground state is deduced for the first time.•The rotational population of every vibrational state follows two-temperature Boltzmann distribution. 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.