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Near-infrared Stokes spectropolarimetry of fusion-related toroidal plasmas

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Abstract

Stokes spectropolarimetry is a method to determine the polarization of an emission line spectrum by decomposing the spectrum into four Stokes parameters. In magnetized fusion-related toroidal plasmas, it can be used for the spatial inversion of a chord-integrated emission line spectrum using the correspondence between the spectrum shape affected by the Zeeman effect and a known magnetic field profile along the viewing chord. This paper reviews the principles and application history of the inversion. In addition, a possible improvement of the inversion accuracy by observing an emission line of a longer wavelength that is based on the difference in wavelength dependences between the Zeeman effect and the other factors affecting the line shape is discussed. As an example, a near-infrared spectropolarimetry system that simultaneously measures orthogonal linear polarization components and the results of inversion for the He I 23S-23P emission line spectrum (1083 nm) in Heliotron J obtained by an atomic Monte Carlo transport simulation are introduced.

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Data availability

The datasets used and analyzed in this study are available from the corresponding author on reasonable request.

Notes

  1. I use Eqs. (1) and (2) only for the conceptual explanation of the Zeeman effect, and the spectra presented in this review are basically calculated using the perturbation method.

References

  • H. Aoki, Y. Liu, T. Yamashita, Deep learning approach for an interface structure analysis with a large statistical noise in neutron reflectometry. Sci. Rep. 11(1), 22711 (2021)

    Article  ADS  Google Scholar 

  • R.M.A. Azzam, N.M. Bashara, Ellipsometry and polarized light (North-Holland Physics Publishing, 1987)

    Book  Google Scholar 

  • W. Biel, R. Albanese, R. Ambrosino, M. Ariola, M.V. Berkel, I. Bolshakova, K.J. Brunner, R. Cavazzana, M. Cecconello, S. Conroy, A. Dinklage, I. Duran, R. Dux, T. Eade, S. Entler, G. Ericsson, E. Fable, D. Farina, L. Figini, C. Finotti, T. Franke, L. Giacomelli, L. Giannone, W. Gonzalez, A. Hjalmarsson, M. Hron, F. Janky, A. Kallenbach, J. Kogoj, R. König, O. Kudlacek, R. Luis, A. Malaquias, O. Marchuk, G. Marchiori, M. Mattei, F. Maviglia, G. De Masi, D. Mazon, H. Meister, K. Meyer, D. Micheletti, S. Nowak, C. Piron, A. Pironti, N. Rispoli, V. Rohde, G. Sergienko, S. El Shawish, M. Siccinio, A. Silva, F. da Silva, C. Sozzi, M. Tardocchi, M. Tokar, W. Treutterer, H. Zohm, Diagnostics for plasma control—from ITER to DEMO. Fusion Eng. Des. 146, 465–472 (2019)

    Article  Google Scholar 

  • S. Brezinsek, P. Mertens, A. Pospieszczyk, G. Sergienko, P.T. Greenland, Molecular and atomic deuterium in the plasma edge of TEXTOR-94. Contrib. Plasma Phys. 42(6–7), 668–674 (2002)

    Article  ADS  Google Scholar 

  • S. Brezinsek, G. Sergienko, A. Pospieszczyk, P. Mertens, U. Samm, P.T. Greenland, Characterization of the deuterium recycling flux in front of a graphite surface in the TEXTOR tokamak. Plasma Phys. Controlled Fusion 47(4), 615–634 (2005)

    Article  ADS  Google Scholar 

  • P.G. Carolan, M.J. Forrest, N.J. Peacock, D.L. Trotman, Observation of Zeeman splitting of spectral-lines from the jet plasma. Plasma Phys. Controlled Fusion 27(10), 1101–1124 (1985)

    Article  ADS  Google Scholar 

  • M. Carr, A. Meakins, S.A. Silburn, J. Karhunen, M. Bernert, C. Bowman, A. Callarelli, P. Carvalho, C. Giroud, J.R. Harrison, S.S. Henderson, A. Huber, B. Lipschultz, T. Lunt, D. Moulton, F. Reimold, A. U. Team, J. E. T. Contributors, M. A.-U. Team and E. U. M. Team, Physically principled reflection models applied to filtered camera imaging inversions in metal walled fusion machines. Rev. Sci. Instrum. 90(4), 043504 (2019)

    Article  ADS  Google Scholar 

  • T. Chatani, T. Shikama, Y. Ueno, S. Kado, H. Kawazome, T. Minami, R. Matoike, M. Murakumo, S. Kobayashi, S. Ohshima, A. Iwata, T. Oishi, A. Ishizawa, Y. Nakamura, H. Okada, S. Konoshima, T. Mizuuchi, K. Nagasaki, M. Hasuo, Spatially resolved measurement of helium atom emission line spectrum in scrape-off layer of Heliotron J by near-infrared Stokes spectropolarimetry. Sci. Rep. 12(1), 15567 (2022)

    Article  ADS  Google Scholar 

  • G. Comsa, R. David, Dynamical parameters of desorbing molecules. Surf. Sci. Rep. 5, 145–198 (1985)

    Article  ADS  Google Scholar 

  • L. del Campo, R.B. Pérez-Sáez, M.J. Tello, Iron oxidation kinetics study by using infrared spectral emissivity measurements below 570 °C. Corros. Sci. 50(1), 194–199 (2008)

    Article  Google Scholar 

  • M.L. Demidov, Y. Hanaoka, T. Sakurai, X.F. Wang, Large-scale solar magnetic fields observed with the infrared spectro-polarimeter IRmag at the National Astronomical Observatory of Japan: comparison of measurements made in different spectral lines and observatories. Sol. Phys. 295(4), 54 (2020)

    Article  ADS  Google Scholar 

  • M.S. Dimitrijevic, Stark broadening of HeI lines. Astron. Astrophys. Suppl Ser. 82, 519–529 (1990)

    ADS  Google Scholar 

  • A.J.H. Donné, A.E. Costley, R. Barnsley, H. Bindslev, R. Boivin, G. Conway, R. Fisher, R. Giannella, H. Hartfuss, M.G.V. Hellermann, E. Hodgson, L.C. Ingesson, K. Itami, D. Johnson, Y. Kawano, T. Kondoh, A. Krasilnikov, Y. Kusama, A. Litnovsky, P. Lotte, P. Nielsen, T. Nishitani, F. Orsitto, B.J. Peterson, G. Razdobarin, J. Sanchez, M. Sasao, T. Sugie, G. Vayakis, V. Voitsenya, K. Vukolov, C. Walker, K. Young and the ITPA Topical Group of Diagnostics, Chapater 7: diagnostics. Nucl. Fusion 47(6), S337–S384 (2007)

    Article  Google Scholar 

  • W. Eckstein, J. Biersack, Reflection of low-energy hydrogen from solids. Appl. Phys. A 38(2), 123–129 (1985)

    Article  ADS  Google Scholar 

  • U. Feldman, J.F. Seely, N.R. Sheeley, S. Suckewer, A.M. Title, Magnetic field measurements in tokamak plasmas. J. Appl. Phys. 56(9), 2512–2518 (1984)

    Article  ADS  Google Scholar 

  • S. Friese, P. Mertens, K. Mlynczak, A. Krimmer, I. Ivashov, C. Linsmeier, T. Ortmanns, G. Offermanns, J.H. Park, D. Leichtle, M. Mittwollen, J. Oellerich, Advanced design of the ITER core CXRS shutter and integration into the diagnostic shield module of the Upper Port Plug No. 3. Fusion Eng. Des. 168, 112391 (2021)

    Article  Google Scholar 

  • K. Fujii, T. Shikama, M. Goto, S. Morita, M. Hasuo, Hydrogen transport diagnostics by atomic and molecular emission line profiles simultaneously measured for large helical device. Phys. Plasmas 20(1), 012514 (2013)

    Article  ADS  Google Scholar 

  • T. Fujimoto, Plasma polarization spectroscopy (Springer, 2007)

    Google Scholar 

  • H. Fujiwara, Spectroscopic ellipsometry: principles and applications (Wiley, 2007)

    Book  Google Scholar 

  • W. Gao, J. Huang, J. Su, J. Fu, Y. Chen, Z. Wu, E. Team, Analysis of asymmetry of the D α emission spectra under the Zeeman effect in boundary region for D–D experiment on EAST tokamak. Chin. Phys. B 30(2), 025201 (2021)

    Article  Google Scholar 

  • R.P. Golingo, U. Shumlak, D.J. Den Hartog, Note: Zeeman splitting measurements in a high-temperature plasma. Rev. Sci. Instrum. 81(12), 126104 (2010)

    Article  ADS  Google Scholar 

  • W. Gonzalez, W. Biel, P. Mertens, M. Tokar, O. Marchuk, C. Linsmeier, Conceptual studies on spectroscopy and radiation diagnostic systems for plasma control on DEMO. Fusion Eng. Des. 146, 2297–2301 (2019)

    Article  Google Scholar 

  • M. Goto, Collisional-radiative model for neutral helium in plasma revisited. J. Quant. Spectrosc. Radiat. Transfer 76, 331–344 (2003)

    Article  ADS  Google Scholar 

  • M. Goto, Zeeman and stark effects, in Plasma polarization spectroscopy, vol. 44, (Springer, 2008), pp.13–28

    Chapter  Google Scholar 

  • M. Goto, S. Morita, Determination of the line emission locations in a large helical device on the basis of the Zeeman effect. Phys. Rev. E 65(2), 026401 (2002)

    Article  ADS  Google Scholar 

  • E.M. Hollmann, S. Brezinsek, N.H. Brooks, M. Groth, A.G. McLean, A.Y. Pigarov, D.L. Rudakov, Spectroscopic measurement of atomic and molecular deuterium fluxes in the DIII-D plasma edge. Plasma Phys. Controll. Fusion 48(8), 1165–1180 (2006)

    Article  ADS  Google Scholar 

  • K. Ichimoto, Spectropolarimetry and magnetic structures, in The sun as a guide to stellar physics. (Elsevier, 2019), pp.185–206

    Chapter  Google Scholar 

  • A. Iwamae, M. Hayakawa, M. Atake, T. Fujimoto, M. Goto, S. Morita, Polarization resolved H alpha spectra from the large helical device: Emission location, temperature, and inward flux of neutral hydrogen. Phys. Plasmas 12(4), 042501 (2005)

    Article  ADS  Google Scholar 

  • A. Iwamae, T. Sugie, H. Ogawa, Y. Kusama, Synthesized intensity of emission lines of hydrogen isotopes and impurities in the ITER divertor plasma. Plasma Phys. Controll. Fusion 53(4), 045005 (2011)

    Article  ADS  Google Scholar 

  • J.D. Jackson, Classical electrodynamics, 3rd edn. (Wiley, 1998)

    MATH  Google Scholar 

  • F. Jahoda, F. Ribe, G. Sawyer, Zeeman-effect magnetic field measurement of a high-temperature plasma. Phys. Rev. 131(1), 24 (1963)

    Article  ADS  Google Scholar 

  • J. Jefferies, B.W. Lites, A. Skumanich, Transfer of line radiation in a magnetic-field. Astrophys. J. 343(2), 920–935 (1989)

    Article  ADS  Google Scholar 

  • S. Kajita, E. Veshchev, S. Lisgo, R. Reichle, R. Barnsley, M. Walsh, A. Alekseev, A. Gorshkov, D. Vukolov, J. Stuber, S. Woodruff, Influence of stray light on visible spectroscopy for the scrape-off layer in ITER. Plasma Phys. Controll. Fusion 55(8), 085020 (2013)

    Article  ADS  Google Scholar 

  • S. Kajita, H. Tanaka, N. Ohno, Tailoring of fuzzy nanostructures on porous tungsten skeleton by helium plasma irradiation. Jap. J. Appl. Phys. 56(3), 030303 (2017)

    Article  ADS  Google Scholar 

  • S. Kajita, E. Veshchev, M. De Bock, R. Barnsley, M. Von Hellermann, M. Walsh, Assessment and mitigation of wall light reflection in ITER by ray tracing. Fusion Sci. Technol. 74(1–2), 37–46 (2018)

    Article  ADS  Google Scholar 

  • Y. Kawabata, A. Asensio Ramos, S. Inoue, T. Shimizu, Chromospheric magnetic field: a comparison of He i 10830 Å observations with nonlinear force-free field extrapolation. Astrophys J 898(1), 32 (2020)

    Article  ADS  Google Scholar 

  • S. Kazantsev, J.C. Henoux, Polarization spectroscopy of ionized gases (Springer Science & Business Media, 2013)

    Google Scholar 

  • O. Kochukhov, Doppler and Zeeman Doppler imaging of stars. Cartography of the Sun and the Stars (Springer, 2016), pp.177–204

    Book  Google Scholar 

  • A.B. Kukushkin, V.S. Neverov, A.G. Alekseev, S.W. Lisgo, A.S. Kukushkin, Synthetic H-alpha diagnostics for ITER: inverse problems and error estimations for strong non-maxwellian effects and intense divertor stray light. Fusion Sci. Technol. 69(3), 628–642 (2017)

    Article  ADS  Google Scholar 

  • H. Kuramoto, N. Hiraki, S. Moriyama, K. Toi, K. Sato, K. Narihara, A. Ejiri, T. Seki, J. T.-I. Group, Measurement of the poloidal magnetic field with high time resolution Zeeman polarimeter in the JIPP T-IIU tokamak. Fusion Eng. Des. 34–35, 285–288 (1997)

    Article  Google Scholar 

  • T. Libbrecht, J. de la Cruz Rodríguez, S. Danilovic, J. Leenaarts, H. Pazira, Chromospheric condensations and magnetic field in a C3.6-class flare studied via He I D3 spectro-polarimetry. Astron. Astrophys. 621, A35 (2019)

    Article  Google Scholar 

  • A. Litnovsky, V.S. Voitsenya, R. Reichle, M. Walsh, A. Razdobarin, A. Dmitriev, N. Babinov, L. Marot, L. Moser, R. Yan, M. Rubel, A. Widdowson, S. Moon, S.G. Oh, Y. An, P. Shigin, I. Orlovskiy, K.Y. Vukolov, E. Andreenko, A. Krimmer, V. Kotov, P. Mertens, Diagnostic mirrors for ITER: research in the frame of International Tokamak Physics Activity. Nucl. Fusion 59(6), 066029 (2019)

    Article  ADS  Google Scholar 

  • B.A. Lomanowski, A.G. Meigs, R.M. Sharples, M. Stamp, C. Guillemaut, Inferring divertor plasma properties from hydrogen Balmer and Paschen series spectroscopy in JET-ILW. Nucl. Fusion 55(12), 123028 (2015)

    Article  ADS  Google Scholar 

  • N.C. Luhmann, H. Bindslev, H. Park, J. Sánchez, G. Taylor, C.X. Yu, Chaapter 3: microwave diagnostics. Fusion Sci. Technol. 53(2), 335–396 (2017)

    Article  ADS  Google Scholar 

  • E.S. Marmar, J.L. Terry, B. Lipschultz, J.E. Rice, Measurement of the current density profile in the Alcator C tokamak using lithium pellets. Rev. Sci. Instrum. 60(12), 3739–3743 (1989)

    Article  ADS  Google Scholar 

  • R. Matoike, G. Kawamura, S. Ohshima, M. Kobayashi, Y. Suzuki, K. Nagasaki, S. Masuzaki, S. Kobayashi, S. Yamamoto, S. Kado, T. Minami, H. Okada, S. Konoshima, T. Mizuuchi, H. Tanaka, H. Matsuura, Y. Feng, H. Frerichs, First application of 3D peripheral plasma transport code EMC3-EIRENE to heliotron J. Plasma Fusion Res. 14, 3403127 (2019)

    Article  ADS  Google Scholar 

  • P. Mertens, R. Boman, S. Dickheuer, Y. Krasikov, A. Krimmer, D. Leichtle, K. Liegeois, C. Linsmeier, A. Litnovsky, O. Marchuk, M. Rasinski, M. De Bock, On the use of rhodium mirrors for optical diagnostics in ITER. Fusion Eng. Des. 146, 2514–2518 (2019)

    Article  Google Scholar 

  • I.H.A.D. Mihalas, Theory of stellar atmospheres (Princeton University Press, 2015)

    MATH  Google Scholar 

  • K. Mizushiri, K. Fujii, T. Shikama, A. Iwamae, M. Goto, S. Morita, M. Hasuo, A simultaneous measurement of polarization-resolved spectra of neutral helium 23P–33D, 21P–31D and 23P–33S emissions from the periphery of a Large Helical Device plasma. Plasma Phys. Controll. Fusion 53(10), 105012 (2011)

    Article  ADS  Google Scholar 

  • M. Murakumo, T. Shikama, T. Chatani, S. Kado, T. Suzuki, A. Mori, G. Motojima, T. Minami, S. Kobayashi, S. Oshima and et al. (2022) (in preparation)

  • B.N. Murdin, J. Li, M.L.Y. Pang, E.T. Bowyer, K.L. Litvinenko, S.K. Clowes, H. Engelkamp, C.R. Pidgeon, I. Galbraith, N.V. Abrosimov, H. Riemann, S.G. Pavlov, H.W. Hubers, P.G. Murdin, Si: P as a laboratory analogue for hydrogen on high magnetic field white dwarf stars. Nat. Commun. 4, 1–8 (2013)

    Article  Google Scholar 

  • V.S. Neverov, A.B. Kukushkin, M.F. Stamp, A.G. Alekseev, S. Brezinsek, M. von Hellermann, Determination of divertor stray light in high-resolution main chamber Hαspectroscopy in JET-ILW. Nucl. Fusion 57(1), 016031 (2017)

    Article  ADS  Google Scholar 

  • V.S. Neverov, R.I. Khusnutdinov, A.G. Alekseev, M. Carr, M. De Bock, A.B. Kukushkin, J. Lovell, A. Meakins, R. Pitts, A.R. Polevoi, E. Veshchev, Development of a tomographic reconstruction method for axisymmetric Dα emission profiles in the ITER plasma boundary. Plasma Phys. Controll. Fusion 62(11), 115014 (2020)

    Article  ADS  Google Scholar 

  • T. Obiki, T. Mizuuchi, K. Nagasaki, H. Okada, F. Sano, K. Hanatani, Y. Liu, T. Hamada, Y. Manabe, H. Shidara, W.L. Ang, Y. Ikeda, T. Kobayashi, T. Takamiya, M. Takeda, Y. Ijiri, T. Senju, K. Yaguchi, K. Sakamoto, K. Toshi, M. Shibano, K. Kondo, S. Besshou, Y. Nakamura, M. Nakasuga, M. Wakatani, O. Yamagishi, K. Aizawa, Y. Kawazome, S. Maeno, K. Tomiyama, First plasmas in Heliotron J. Nucl. Fusion 41(7), 833–844 (2001)

    Article  ADS  Google Scholar 

  • E. Palovcak, D. Asarnow, M.G. Campbell, Z. Yu, Y. Cheng, Enhancing the signal-to-noise ratio and generating contrast for cryo-EM images with convolutional neural networks. IUCrJ 7(Pt 6), 1142–1150 (2020)

    Article  Google Scholar 

  • N.J. Peacock, B.A. Norton, Measurement of megagauss magnetic fields in a plasma focus device. Phys. Rev. A 11(6), 2142–2146 (1975)

    Article  ADS  Google Scholar 

  • G. Rosenzweig, E. Kroupp, A. Fisher, Y. Maron, Measurements of the spatial magnetic field distribution in a z-pinch plasma throughout the stagnation process. J. Instrum. 12(09), 09004 (2017)

    Article  Google Scholar 

  • B.E.A. Saleh, M.C. Teich, Fundamentals of photonics, 2nd edn. (Wiley, 2007)

    Google Scholar 

  • K. Sawada, T. Fujimoto, Effective ionization and dissociation rate coefficients of molecular hydrogen in plasma. J. Appl. Phys. 78, 1 (1995)

    Article  Google Scholar 

  • K. Sawada, M. Goto, Rovibrationally resolved time-dependent collisional-radiative model of molecular hydrogen and its application to a fusion detached plasma. Atoms 4(4), 29 (2016)

    Article  ADS  Google Scholar 

  • V.A. Shakhatov, O. De Pascale, M. Capitelli, K. Hassouni, G. Lombardi, A. Gicquel, Measurement of vibrational, gas, and rotational temperatures of H-2 (X-1 Sigma(+)(g)) in radio frequency inductive discharge plasma by multiplex coherent anti-Stokes Raman scattering spectroscopy technique. Phys. Plasmas 12(2), 023504 (2005)

    Article  ADS  Google Scholar 

  • T. Shikama, P.M. Bellan, Development of a polarization resolved spectroscopic diagnostic for measurements of the vector magnetic field in the Caltech coaxial magnetized plasma jet experiment. Rev. Sci. Instrum. 84(2), 023507 (2013)

    Article  ADS  Google Scholar 

  • T. Shikama, S. Kado, H. Zushi, A. Iwamae, S. Tanaka, Application of the Zeeman patterns in Ov and Halpha spectra to the local plasma diagnostics of the TRIAM-1M tokamak. Phys. Plasmas 11(10), 4701–4708 (2004)

    Article  ADS  Google Scholar 

  • T. Shikama, S. Kado, H. Zushi, M. Sakamoto, A. Iwamae, S. Tanaka, Application of the Zeeman patterns to the measurement of local neutral behaviour in the edge plasma of TRIAM-1M tokamak. Plasma Phys. Controll. Fusion 48(8), 1125 (2006)

    Article  ADS  Google Scholar 

  • T. Shikama, S. Kado, H. Zushi, S. Tanaka, Molecular Zeeman spectroscopy for H2 Fulcher-alpha band spectra as a local measurement of rovibrational structures. Phys. Plasmas 14(7), 072509 (2007)

    Article  ADS  Google Scholar 

  • T. Shikama, S. Ogane, H. Ishii, Y. Iida, M. Hasuo, Measurements of helium 23S metastable atom density in low-pressure glow discharge plasmas by self-absorption spectroscopy of HeI 23S–23P transition. Jpn. J. Appl. Phys. 53(8), 086101 (2014)

    Article  ADS  Google Scholar 

  • T. Shikama, S. Ogane, Y. Iida, M. Hasuo, Measurement of the helium 23S metastable atom density by observation of the change in the 23S–23P emission line shape due to radiation reabsorption. J. Phys. D Appl. Phys. 49, 025206 (2016)

    Article  ADS  Google Scholar 

  • T. Shikama, S. Kado, H. Okada, S. Yamamoto, L. Matsuoka, T. Mizuuchi, T. Minami, S. Kobayashi, K. Nagasaki, S. Oshima, Near-infrared Zeeman spectroscopy for the spatially resolved measurement of helium emission spectra in Heliotron J. Plasma Phys. Controll. Fusion 61(2), 025001 (2018)

    Article  ADS  Google Scholar 

  • I.I. Sobelman, Atomic spectra and radiative transitions (Springer-Verlag, 1991)

    Google Scholar 

  • V.A. Soukhanovskii, D.W. Johnson, R. Kaita, A.L. Roquemore, Electron density measurements in the National Spherical Torus Experiment detached divertor region using Stark broadening of deuterium infrared Paschen emission lines. Rev. Sci. Instrum. 77(10), 10f127 (2006)

    Article  Google Scholar 

  • J.O. Stenflo, Solar magnetic fields as revealed by Stokes polarimetry. Astron. Astrophys. Rev. 21(1), 66 (2013)

    Article  ADS  Google Scholar 

  • M. Stix, The Sun, 2nd edn. (Springer, 2004)

    MATH  Google Scholar 

  • Stotler, D, DEGAS 2 home page. (2022), from https://w3.pppl.gov/degas2/

  • J.L. Terry, E.S. Marmar, R.B. Howell, M. Bell, A. Cavallo, E. Fredrickson, A. Ramsey, G.L. Schmidt, B. Stratton, G. Taylor, M.E. Mauel, Measurement of internal magnetic field pitch using Li pellet injection on TFTR (invited). Rev. Sci. Instrum. 61(10), 2908–2913 (1990)

    Article  ADS  Google Scholar 

  • J. Timbergen, Astronomical polarimetry (Cambridge University Press, Cambridge, 1996)

    Book  Google Scholar 

  • K. Tobita, R. Hiwatari, Y. Sakamoto, Y. Someya, N. Asakura, H. Utoh, Y. Miyoshi, S. Tokunaga, Y. Homma, S. Kakudate, N. Nakajima, T. J. S. D. T. for Fusion Demo, Japan’s efforts to develop the concept of JA DEMO during the past decade. Fusion Sci. Technol. 75(5), 372–383 (2019)

    Article  ADS  Google Scholar 

  • M.Z. Tokar, Assessment for erosion of and impurity deposition on first mirrors in a fusion reactor. Nucl. Fusion 58(9), 096007 (2018)

    Article  ADS  Google Scholar 

  • T. Ushiki, R. Imazawa, H. Murakami, K. Shimizu, T. Sugie, T. Hatae, Expanded two-color thermography considering temperature-dependent emissivity of tungsten for ITER divertor infrared thermography. Fusion Eng. Des. 168, 112665 (2021)

    Article  Google Scholar 

  • J.L. Weaver, B.L. Welch, H.R. Griem, J. Terry, B. Lipschultz, C.S. Pitcher, S. Wolfe, D.A. Pappas, C. Boswell, Localization of emission through interpretation of observed Zeeman pattern. Rev. Sci. Instrum. 71(4), 1664–1670 (2000)

    Article  ADS  Google Scholar 

  • M. Weissbluth, Atoms and molecules (Academic Press, New York, 1978)

    Google Scholar 

  • B.L. Welch, J.L. Weaver, H.R. Griem, W.A. Noonan, J. Terry, B. Lipschultz, C.S. Pitcher, Neutral atom temperature and flow measurements in the edge region of the Alcator C-mod tokamak. Phys. Plasmas 8(4), 1253–1262 (2001)

    Article  ADS  Google Scholar 

  • D. Wróblewski, H.W. Moos, W.L. Rowan, Zeeman effect polarimetry of Ti XVII 3834 Å line in the Texas Experimental Tokamak. Appl. Phys. Lett. 48(1), 21–23 (1986)

    Article  ADS  Google Scholar 

  • D. Wroblewski, L.K. Huang, H.W. Moos, P.E. Phillips, Determination of the poloidal magnetic field profiles in a tokamak by polarization spectroscopy of an impurity ion line. Phys. Rev. Lett. 61(15), 1724–1727 (1988)

    Article  ADS  Google Scholar 

  • D. Wünderlich, L.H. Scarlett, S. Briefi, U. Fantz, M.C. Zammit, D.V. Fursa, I. Bray, Application of molecular convergent close-coupling cross sections in a collisional radiative model for the triplet system of molecular hydrogen. J. Phys. D: Appl. Phys. 54(11), 115201 (2021)

    Article  ADS  Google Scholar 

  • E. Yatsuka, T. Hatae, G. Vayakis, M. Bassan, K. Itami, Chevron beam dump for ITER edge Thomson scattering system. Rev. Sci. Instrum. 84(10), 103503 (2013)

    Article  ADS  Google Scholar 

  • N. Yoneda, T. Shikama, F. Scotti, K. Hanada, H. Iguchi, H. Idei, T. Onchi, A. Ejiri, T. Ido, K. Kono and et al. (2022). Spectroscopic measurement of increases in hydrogen molecular rotational temperature with plasma‐facing surface temperature caused by collisional‐radiative processes in Tokamaks. Nucl. Fusion

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Acknowledgements

This work was supported in part by the NIFS LHD Project Collaborative Research Program (No. NIFS19KOAP034), JSPS KAKENHI (No. 21H01054), a research grant from the Research Foundation for Opto-Science and Technology, and the Kyoto University IAE Zero Emission Collaborative Research Program (Nos. ZE2021B-10 and ZE2020B-08). The author would like to thank the collaborators from Optical Engineering Laboratory and Heliotron J group of Kyoto University, Kagawa College, NIFS, and QUEST group of Kyushu University. The views and opinions expressed herein do not necessarily reflect those of the ITER Organization and EUROfusion

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  1. Department of Mechanical Engineering and Science, Graduate School of Engineering, Kyoto University, Kyotodaigaku-Katsura, Nishikyo-ku, Kyoto, 615-8540, Japan

    Taiichi Shikama

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Shikama, T. Near-infrared Stokes spectropolarimetry of fusion-related toroidal plasmas. Rev. Mod. Plasma Phys. 6, 39 (2022). https://doi.org/10.1007/s41614-022-00098-w

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