<RESEARCH REPORT>The Optimum Condition of TPD-I Recombining Helium Plasma for VUV Coherent Lasing Action
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概要
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The optimum conditions of initial electron density and temperature, decay time, flow velocity, and plasma shape for the continuous VUV coherent laser oscillation are presented together with explanation of the population inversion mechanism in the recombining plasma of TPD-I, which consists basically of two parts; the discharge region with the cathode at the center of the cusped magnetic field and the plasma column region with the axial magnetic field. According to calculations, the initial plasma of the extremely high temperature and density is not necessarily required for the continuous coherent VUV wavelength laser oscillation. The continuous coherent laser of wavelength 164nm which corresponds to the transition n=3⇾2 in H^+_e ion will be oscillated if the initial steady state extremely thin sheet plasma flow with the electron density of 1.28×10^<15>∿1.28×10^<16>cm^<-3> and with high speed of 2.×10^6cm/sec are cooled down to 0.2eV with the decay time 10^<-7>∿10^<-8> sec.
- 核融合科学研究所の論文
著者
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Oda Toshiatsu
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Applied Phys
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Furukane Utaro
Research Information Center, Institute of Plasma Physics, Nagoya University
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Tsuji Yasumasa
Research Information Center, Institute of Plasma Physics, Nagoya University
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Furukane Utaro
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Physics Coll
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Tsuji Yasumasa
Research Information Center Institute Of Plasma Physics Nagoya University:faculty Of Engineering Ehi
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Furukane Utaro
Research Information Center Institute Of Plasma Physics Nagoya University:department Of Physics Coll
関連論文
- The Optimum Condition of TPD-I Recombining Helium Plasma for VUV Coherent Lasing Action
- Population Inversion between the Ground State and the First Excited State in a Recombining Hydrogen Plasma
- Gas-Contact Cooling for VUV Laser Oscillation in Recombining Plasmas
- Population Inversion in a Recombining Hydrogen Plasma Interacting with a Helium Gas
- The Behaviour of Population in a Plasma Interacting with an Atomic Gas
- Population Inversion in an Optically Thick Recombining Hydrogen Plasma
- Population Inversion in Recombining Hydrogen Plasma
- Population Inversion and Threshold Condition for Laser Oscillation in Optically Thin and Thick Recombining Plasmas