TY - JOUR
T1 - Comparison between Tomography and Langmuir Probe Data in PANTA
AU - Nagashima, Yoshihiko
AU - Fujisawa, Akihide
AU - Yamasaki, Kotaro
AU - Shigeru, Inagaki
AU - Moon, Chanho
AU - Kin, Fumiyoshi
AU - Kawachi, Yuichi
AU - Arakawa, Hiroyuki
AU - Yamada, Takuma
AU - Kobayashi, Tatsuya
AU - Kasuya, Naohiro
AU - Kosuga, Yusuke
AU - Sasaki, Makoto
AU - Ido, Takeshi
N1 - Funding Information:
Acknowledgment This work was supported by Grants-in-Aid for Specially Promoted Research (17H06089) and Scientific Research (15H02335). We would like to thank S.-I. Itoh, professor emeritus of Kyushu University, and K. Itoh, professor emeritus of National Institute for Fusion Science, for useful discussion on the experimental data.
Funding Information:
This work was supported by Grants-in-Aid for Specially Promoted Research (17H06089) and Scientific Research (15H02335). We would like to thank S.-I. Itoh, professor emeritus of Kyushu University, and K. Itoh, professor emeritus of National Institute for Fusion Science, for useful discussion on the experimental data.
Publisher Copyright:
©2020 The Physical Society of Japan
PY - 2020/9/15
Y1 - 2020/9/15
N2 - Emission intensity ε from plasmas is a complicated function of electron temperature Te and electron density ne. To understand the dependence of ε on Te and ne, an experimental comparison between tomography data (local ε of ArII) and Langmuir probe data (Te and ne) in a linear plasma device PANTA is presented in this paper. In the comparison, the local emission intensity is modeled as εmodel / Teαn2e, and the model is validated by calculating both cross-correlation function and least squares of residuals between the fluctuations of ε and εmodel. The comparison reveals that the both methods provide α = 2.3–2.7, higher than 2 that of the exponent of ne. This result confirms that dependence of Te on ε is larger than that of ne when Te is low, as in PANTA.
AB - Emission intensity ε from plasmas is a complicated function of electron temperature Te and electron density ne. To understand the dependence of ε on Te and ne, an experimental comparison between tomography data (local ε of ArII) and Langmuir probe data (Te and ne) in a linear plasma device PANTA is presented in this paper. In the comparison, the local emission intensity is modeled as εmodel / Teαn2e, and the model is validated by calculating both cross-correlation function and least squares of residuals between the fluctuations of ε and εmodel. The comparison reveals that the both methods provide α = 2.3–2.7, higher than 2 that of the exponent of ne. This result confirms that dependence of Te on ε is larger than that of ne when Te is low, as in PANTA.
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U2 - 10.7566/JPSJ.89.093501
DO - 10.7566/JPSJ.89.093501
M3 - Article
AN - SCOPUS:85090132675
SN - 0031-9015
VL - 89
JO - journal of the physical society of japan
JF - journal of the physical society of japan
IS - 9
M1 - 093501
ER -