Spatial Distribution of H Atom Density in High-Density, Helicon-Wave H2 Plasmas Measured by Laser-Induced Fluorescence
スポンサーリンク
概要
- 論文の詳細を見る
Spatial distributions of H atom density in high-density, helicon-wave H2 plasmas were measured by ($2+1$)-photon laser-induced fluorescence spectroscopy. In low-power, high-pressure discharges, hill-type distributions, i.e., the H atom density in the plasma column was higher than that in the outside region, were observed. The hill-type density distribution can be explained by known mechanisms of gas-phase reactions, diffusion, and surface loss of H atoms. On the other hand, in high-power, low-pressure discharges, deep dips were observed in the spatial distribution of the H atom density. The dip region corresponded to the location of the plasma column, suggesting significant heating of H atoms.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2001-05-15
著者
-
Nakamoto Masahiko
Department Of Disaster And Emergency Medicine Graduate School Of Medical Sciences Kyushu University
-
Kadota Kiyoshi
Department Of Electronics Nagoya University
-
Sasaki Koichi
Department Of Electrical Engineering And Computer Science Nagoya University
-
Kadota Kiyoshi
Department of Electronics, Nagoya University, Nagoya 464-8603, Japan
-
Nakamoto Masahiko
Department of Electronics, Nagoya University, Nagoya 464-8603, Japan
-
SASAKI Koichi
Department of Architecture, Faculty of Engineering, Tohoku University
関連論文
- Analysis of endoscopic surgical skill training using the da Vinci^【○!R】 surgical system : Comparison between medical doctors and robotics engineers
- Formation of C_2 Radicals in High-Density C_4F_8 Plasmas Studied by Laser-Induced Fluorescence
- Enhancement of Surface Productions of CF_x Radicals by the Addition of H_2 into CF_4 Plasmas
- Loss Processes of F Atoms in Low-Pressure, High-Density CF_4 Plasmas with the Admixture of H_2
- Surface Kinetics of CF_x Radicals and Fluorine Atoms in the Afterglow of High-Density C_4F_8 Plasmas
- Lifetime Measurements of CF_x Radicals and H Atoms in Afterglow of CF_4/H_2 Plasmas
- Loss Processes of CF and CF_2 Radicals in the Afterglow of High-Density CF_4 Plasmas
- Estimation of Carbon Fluxes Interchanging between Chamber Wall and Gas Phase in Fluorocarbon Plasmas
- Synthesis of Heavy Carbon Clusters by Laser Ablation in Vacuum
- Spatial Distribution of H Atom Density in High-Density, Helicon-Wave H_2 Plasmas Measured by Laser-Induced Fluorescence
- Formation of Positive and Negative Carbon Cluster Ions in the Initial Phase of Laser Ablation in Vacuum
- Role of Reaction Products in F^- Production in Low-Pressure, High-Density CF_4 Plasmas
- Diagnostics of Fluorine Negative Ions by Laser Photodetachment Combined with a Heated Probe in High-Density CF_4 Plasmas
- Ultra-Sensitive Measurement of Sheath Electric Fields by Laser-Induced Fluorescence-Dip Spectroscopy
- Experimental Study of the Spectral Characteristics of a High Power, Pulsed D_2O Laser for Application to Plasma Diagnostics
- Right Paranephric Abscess as a Rare Late Complication of Laparoscopic Cholecystectomy
- Efficient Production of O^- by Dissociative Attachment of Slow Electrons to Highly Excited Metastable Oxygen Molecules
- Time-of-Flight Mass Spectrometry of Positive Ions in Helicon-Wave Excited High-Density CF_4 and C_4F_8 Plasmas
- Characteristics of Fluorine Negative Ions in Helicon-Wave Excited High-Density Carbon-Tetrafluoride Plasmas (負イオン特集)
- Neutralization Method for detection of Metastable Ions and Its Application to the Production of Metastable Rare Gas Ions by Electron Impact
- Early Gastric Cancer Manifested as Brain Metastasis: Report of a Case
- Bile Peritonitis Due to a Spontaneous Perforation of the Common Bile Duct : Report of a Case
- Temporal Variations in Densities of Y, Ba, and Cu Atoms in Magnetron Sputtering Plasmas with YBaCuO Target
- Numerical Study on Mode Structure of an Optically-Pumped 385 μm D_2O Laser
- Two-Frequency Operation of a Hybrid TEA CO_2 Laser and Its Application to Two-Frequency Pulse Injection Locking
- Pulse Injection-Locked TEA CO_2 Laser for Long Pulse Operation with Feedback Stabilization
- Theoretical Model and Numerical Simulation of Two-Longitudinal-Mode Oscillation in an Injection-Locked TEA CO_2 Laser
- Formation of Metastable State Molecular Ions by Electron Impact of N_2, CO, O_2 and NO
- Comparison of the Fluorine Atom Density Measured by Actinometry and Vacuum Ultraviolet Absorption Spectroscopy
- Decay Processes of Electrons in the Afterglow of High-Density CF_4, c-C_4F_8 and CF_4-H_2 Plasmas
- Collisional Quenching of C_2(d^3Π_g) and C^3(A^1〜Π_u) and Its Application to the Estimation of Absolute Particle Density in Laser-Ablation Carbon Plumes
- Secondary Electron Ejection from Contaminated Metal Surface by He and Ar Atoms
- Observation of Stark Spectra of Argon High Rydberg States in Well-Defined Electric Fields by Laser-Induced Fluorescence-Dip Spectroscopy
- Correlation between Metastable and Ground-State Fluorine Atom Densities Measured by Laser-Induced Fluorescence and Vacuum Ultraviolet Absorption Spectroscopies : Nuclear Science, Plasmas, and Electric Discharges
- Measurements of Rotational Temperature and Density of Molecular Nitrogen in Spark-Plug Assisted Atmospheric-Pressure Microwave Discharges by Rotational Raman Scattering
- Dynamic Variation of the Sticking Coefficient of Oxygen Atoms in Helicon-Wave Excited High-Density Oxygen Plasmas
- Numerical Simulation of Elongating the Pulse Duration of a TEA CO_2 Laser
- Some Aspects of the Reproductive Biology of the Swimming Crab, Ovalipes punctatus (DE HAAN), in Sendai Bay and its Adjacent Waters
- Course of NTX changes under continuous bisphosphonate treatment in cases of NTX over-reduction due to long-term treatment with bisphosphonates
- Two-Dimensional Distributions of Ti and Ti+ Densities in High-Pressure Magnetron Sputtering Discharges
- Development of a Compact Divertor Simulator Excited by Helicon-Wave Discharge
- Fecundity of the Sakhalin Surf Clam, Spisula sachalinensis (SCHRENCK), in Sendai Bay
- Tubulointerstitial nephritis and uveitis syndrome with transient hyperthyroidism in an elderly patient
- Distal Renal Tubular Acidosis Associated with Sjögren's Syndrome
- Growth of the Sakhalin Surf Clam, Spisula sachalinensis (SCHRENCK), in Sendai Bay
- Spatial Distribution of H Atom Density in High-Density, Helicon-Wave H2 Plasmas Measured by Laser-Induced Fluorescence
- Measurements of Gas Temperature in High-Density Helicon-Wave H2 Plasmas by Diode Laser Absorption Spectroscopy
- Composition of Positive Ions in High-Density H2 Plasmas Measured by Time-of-Flight Mass Spectrometry
- Production of Radicals and Particulates by Interaction between High-Density Hydrogen Plasma and Graphite Plate
- Dynamic Variation of the Sticking Coefficient of Oxygen Atoms in Helicon-Wave Excited High-Density Oxygen Plasmas
- Temporal Variations in Densities of Y, Ba, and Cu Atoms in Magnetron Sputtering Plasmas with YBaCuO Target
- Dynamics of Laser-Ablation Plume and Ambient Gas Visualized by Laser-Induced Fluorescence Imaging Spectroscopy
- A Case of Nephrocalcinosis Associated with Primary Aldosteronism
- Temporal Variations in Distributions of NO and NO2 Densities in Streamer Corona Discharges
- 503 RELATIONSHIP BETWEEN CEREBROVASCULAR DISEASE AND INDOOR THERMAL ENVIRONMENT IN TWO SELECTED TOWNS IN MIYAGI PREFECTURE, JAPAN
- Formation of Positive and Negative Carbon Cluster Ions in the Initial Phase of Laser Ablation in Vacuum
- Correlation between Metastable and Ground-State Fluorine Atom Densities Measured by Laser-Induced Fluorescence and Vacuum Ultraviolet Absorption Spectroscopies
- Prognostic significance of left ventricular hypertrophy observed at dialysis initiation depends on the pre-dialysis use of erythropoiesis-stimulating agents