Development of a New Photoelectron Spectroscopy method Using Microchannel Plates and Studies of Electron Confinement due to Electrostatic Plasma Potentials

• Project/Area Number: 03680003
• Research Category: Grant-in-Aid for General Scientific Research (C)
• Allocation Type: Single-year Grants
• Research Field: プラズマ理工学
• Research Institution: University of Tsukuba
• Principal Investigator: CHO Teruji University of Tsukuba, Institute of Physics, Associate Professor, 物理学系, 助教授 (80171958)
• Co-Investigator(Kenkyū-buntansha): OGURA Kazuo Niigata University, Faculty of Engineering, Associate Professor, 工・電気電子工学科, 助教授 (40214093) ; YAMAGUCHI Naohiro University of Tsukuba, Institute of Physics, Asistant Professor, 物理学系, 講師 (90158113)
• Project Period (FY): 1991 – 1993
• Project Status: Completed (Fiscal Year 1993)
• Budget Amount: ¥2,200,000 (Direct Cost: ¥2,200,000); Fiscal Year 1993: ¥500,000 (Direct Cost: ¥500,000); Fiscal Year 1992: ¥500,000 (Direct Cost: ¥500,000); Fiscal Year 1991: ¥1,200,000 (Direct Cost: ¥1,200,000)
• Keywords: Photoelectron, / X-ray Spectrometer, / MCP, / Plasma Diagnostics, / Synchrotron Radiation, / Potential Confinement, / Electron Energy Balance, / Thermal Barrier / 光電子分光器 / X線計測 / 電位によるプラズマ閉じ込め / 電子のエネルギーバランス / マイクロチャンネルプレート(MCP) / 新型光電子分光器 / MCPを用いた光電子分光器 / 光電子分光法によるプラズマ計測 / プラズマ電子温度計測 / 放射光による感度較正 / 電子温度計測シミレーション / カーボンターゲット分光器 / マイクロチャンネルプレ-ト(MCP) / 新しい光電子分光器 / MCPの光電子分光への適用 / 計測器の基礎特性 / 光電子分光による電子温度計測 / 電子温度と光電ピ-クの相関 / 電子温滝計測シミレ-ション

Research Abstract

A new x-ray spectrometer using the principle of a photoelectron spectroscopy method is developed for the purpose of the observations of plasma electron temperatures in the range of a hundred of eV.X-ray photoelectron spectroscopy (XPS) is a widely utilized method for surface-physics analyzes ; here, we employ a parallel-plate energy analyzer. This new type spectrometer is calibrated using synchrotron radiation from a 2.5-GeV positron storage ring at KEK.Theoretical calculations for photoelectron spectra from plasmas with various electron temperatures are carried out using the calibration data. This spectrometer is set up at the central cell of the GAMMA 10 tandem mirror for the measurements of potential-confined electron temperatures. Experimentally observed spectra are compared with the calculated spectra as well as the data from the other x-ray detectors.

Research Products

• [Publications] T.Cho et al.: "X-ray Studies of Various Shapes of Electron-Velocity Distribution Functions and of Electron Confinement Affected by Kilovolt-Range Electrostatic Potentials" Physical Review A. A45. 2532-2545 (1992)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] T.Cho et al.: "X-ray Detector Characterization and Applications for Plasma Research" Nuclear Instruments and Methods in Physics Research B. B66. 485-491 (1992)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] T.Cho et al.: "Evidence Against Existing X-ray-Energy Response Theories for Silicon-Surface-Barrier Semiconductor Detectors" Physical Review A. A46. 3024-3027 (1992)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] T.Cho et al.: "A Theory on the X-ray Sensitivity of a Silicon-Surface Barrier Detector Including a Thermal Charge Diffusion Effect" Journal of Applied Physics. 72. 3363-3373 (1992)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] T.Cho et al.: "Relation Between Electron Velocity Distribution Functions on Potential Formation" Invited Paper:International Conference on Open Plasma Confinement Systems for Fusion. (in Press). (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] T.Cho et al.: "New Findings of X-ray Energy Responses of Silicon Surface Barrier Detectors and Their Exteation to a Generalized X-ray Response Theory on Position Sensitive Detectors" Nuclear Instruments and Methods in Physics Research A. (in Press). (1994)
  • Description: 「研究成果報告書概要(和文)」より
• [Publications] T.Cho, M.Hirata, E.Takahashi, K.Ogura, K.Masai, N.Yamaguchi, T.Kondoh, K.Matsuda, H.Hojo, M.Inutake, K.Ishii, Y.Kiwamoto, A.Mase, T.Saito, K.Yatsu and S.Miyoshi: "X-ray Studies of Various Shapes of Electron-Velocity Distribution Functions and of Electron Confinement Affected by Kilovolt-Range Electrostatic Potentials" A 45, No.4. Physical Review. 2532-2545 (1992)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] T.Cho, M.Hirata, E.Takahashi, N.Yamaguchi, T.Kondoh, T.Kuwabara, K.Yatsu, K.Ogura, S.Aoki, H.Maezawa and S.Miyoshi: "X-ray Detector Characterization and Applications for Plasma Research" Nuclear Instruments and Methods in Physics Research. B 66, No.4. 485-491 (1992)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] T.Cho, E.Takahashi, M.Hirata, N.Yamaguchi, T.Teraji, K.Matsuda, A.Takeuchi, J.Kohagura, K.Yatsu, T.Tamano, T.Kondoh, S.Aoki, X.W.Zhang, H.Maezawa and S.Miyoshi: "Evidence Against Existing X-ray-Engergy Response Theories for Silicon-Surface-Barrier Semiconductor Detectors" Physical Review. A 46, No.6. 3024-3027 (1992)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] T.Cho, M.Hirata, E.Takahashi, T.Teraji, N.Yamaguchi, K.Matsuda, A.Takeuchi, J.Kohagura, K.Ogura, T.Kondoh, A.Osawa, K.Yatus, T.Tamano and S.Miyoshi: "A Theory on the X-ray Sensitivity of a Silicon Surface-Barrier Detector Including a Thermal Charge-Diffusion Effect" Journal of Applied Physics. 72, No.8. 3363-3373 (1992)
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] T.Cho, M.Hirata, E.Takahashi, J.Kohogura, T.Teraji, A.Takeuchi, Y.Sakamoto, K.Yatsu and T.Tamano: "Relation Between Electron-Velocity Distribution Functions and Potential Formation" Invited : International Conference on Open Plasma Confinement Systems for Fusion, Novosibirsk, (Russia, 1993, June 14-18). Paper No.1-5.
  • Description: 「研究成果報告書概要(欧文)」より
• [Publications] T.Cho et al.: "New findings of X-ray energy responses of silicon surface barrier detectors and their generalized theoretical extention to X-ray responses of position sensitive detectors" Nuclear Instruments and Methods in Physics Research A. (印刷中). (1994)
• [Publications] T.Cho et al.: "Relation between electron-velocity distribution functions and potential formation" Proc.International Conference on Open Plasma Confinement System for Fusion(Invited Paper)〔World Scientific Publishing Co.刊〕. (印刷中). (1994)
• [Publications] T.Cho et al.: "Evidence against existing X-ray-energy response theories for silicon surface barrier semiconductor detectors" Physical Review A. 46. 3024-3027 (1992)
• [Publications] T.Cho et al.: "X-ray studies of various shapes of electron-velocity distribution functions and of electron confinement affected by kilovolt-range electrostatic potentials" Physical Review A. 45. 2532-2545 (1992)
• [Publications] T.Cho et al.: "A theory on the X-ray sensitivity of a silicon surface barrier detector including a thermal charge diffusion effect" Journal of Applied Physics. 72. 3363-3373 (1992)
• [Publications] T.Cho et al.: "X-ray detector characterization and applications for plasma research" Nuclear Instruments and Method in Physics Research B. 66. 485-491 (1992)
• [Publications] T.Cho et al.: "Evidence against existing x-ray-energy response theories for silicon-surface-barrier semiconductor detectors" Physical Review A. 46. 3024-3027 (1992)
• [Publications] T.Cho et al.: "A theory on the x-ray sensitivity of a silicon surface-barrier detector including a thermal charge-diffusion effect" Journal of Applied Physics. 72. 3363-3373 (1992)
• [Publications] T.Cho et al.: "X-ray detector characterization and applications for plasma research" Nuclear Instruments and Methods in Physics Research B. 66. 485-491 (1992)
• [Publications] M.Hirata et al.: "X-ray detection characteristics of gold photocathodes and michrochannel plates using synchrotron radiation" Nuclear Instruments and Methods in Physics Research B. 66. 479-484 (1992)
• [Publications] T.Cho et al.: "X-ray studies of various shapes of electronvelocity distribution functions and of electron confinement affected by kilovolt-range electrostatic potentials" Physical Review A. 45. 2532-2545 (1992)
• [Publications] N.Yamaguchi et al.: "Simple soft x-ray spectrograph with a multilayer mirror for plasma diagnostics" Applied Physics Letters. 60. 821-823 (1992)
• [Publications] T.Cho et al.: "Xーray studies of various shopes of electronーvelocity distribution and of electron confinement affected by Kilovoltーrange electrostatic potentials" Physical Review A. 45,第4号. (1992)
• [Publications] T.Cho et al.: "Xーray detector characterization and applications for plasma research" Nuclear Instruments and Methods in Physics Research B. (1992)
• [Publications] M.Hirata et al.: "Xーray Detection Characteristics of Gold Photocathodes and Microchannel Plates Using Synchrotron Radiation(10eVー82.5keV)" Nuclear Instruments and Methods in Physics Research B. (1992)
• [Publications] T.Cho et al.: "Observation of Various Electron Velocity Distribution Shapes Using Xーray Diagnostics in GAMMA 10" Proceedings of 18th European Conference on Controlled Fusion and Plasma Physics. 15C,II. 273-276 (1991)
• [Publications] S.Miyoshi et al.: "Recent Upgraded Tondem Mirror Experiments in GAMMA 10" Proceedings of 18th European Conference on Controlled Fusion and Plasma Physics. 15C,II. 269-272 (1991)
• [Publications] N.Yamaguchi et al.: "Simple Soft xーray spectrograph with a multilayer mirror for plasma diagnostics" Applied Physics Letters. 60. 821-823 (1992)