Written in English
|The Physical Object|
|Number of Pages||69|
Atomic Hydrogen Source An atomic H beam is easily produced by passing H 2 gas through a microwave discharge tube using a highly efficient microwave radiator oscillating at GHz . This radiator produces a 2H:H 2 dissociation yield as high as 90% at a flux of ~10 17 atoms/second, operating at pressures from ~ - 2 torr . Figure 2. - Effect of pressure on atomic hydrogen yield (from ref. 5). For optimum condi- tions peak of curve equals percent dissociation. requirements include (1) a 9/inch-diameter discharge tube, (2) a gas flow rate of less than mole per second, and (3) a maximum of watts of power dissipated in that. A cw dye laser operating at Å has been used to measure Doppler broadened absorption profiles of atomic hydrogen in a glow discharge using optogalvanic detection. This work experimentally investigates the efficiency of dissociation of CO2 in a 1-kW radio-frequency (rf) plasma source operating at MHz in a low-pressure discharge.
the addition of helium and oxygen to an rf argon glow discharge. Experimental Glow-discharge ion source A Grimm-type ion source attached to a commercial inductively coupled plasma mass spectrometer (Model SPQ A, Seiko Instr. Inc.) has been described elsewhere.5,16 The source was slightly modified for thisCited by: 6. Abstract This paper presents a critical review of analytical radio frequency glow discharge spectrometry (rf-GDS). The historical foundations of rf-GDS are described, and current knowledge of the fundamental physics of analytical rf glow discharges is : Michael R. Winchester, R Payling. method of applying a radio frequency power source to a cell filled with low pressure inert gas could be used to quantitatively measure atomic emission lines from a sample, used as the cathode. RF-glow discharge uses a radio frequency AC power source to generate a plasma within a glass or quartz cell. Absolute atomic hydrogen densities were measured in the gaseous electronics conference reference cell parallel plate reactor by Doppler-free two-photon absorption laser induced fluorescence spectroscopy (TALIF) at λ= nm. The capacitively coupled radio frequency discharge was operated at MHz in pure hydrogen under various input power and Cited by:
A method is described for the elemental analysis of glass powder samples by rf-GD-AES. Glass powder samples were pressed without binder to form sample disks. A brass sample holder was designed to hold the pellet onto the source and provide a good vacuum seal. Sample preparation conditions and particle sizes are shown to influence spectral Cited by: 9. Ground-state atomic hydrogen produced in radio-frequency plasma discharges (20 KHz-5 MHz) has been detectedin situ using two-photon absorption laser-induced fluorescence (TALIF). Atomic ground-state concentration measurements have demonstrated excellent spatial resolution in the interelectrode gap of a planar discharge configuration with 10 nsec temporal Cited by: Genetic effects of radio-frequency, atmospheric-pressure glow discharges with helium Guo Li,1 He-Ping Li,1,a Li-Yan Wang,2 Sen Wang,1 Hong-Xin Zhao,2 Wen-Ting Sun,1,b Xin-Hui Xing,2,a and Cheng-Yu Bao1 1Department of Engineering Physics, Tsinghua University, Beijing , People’s Republic of China 2Department of Chemical Engineering, Tsinghua University, File Size: KB. RFGD - Radio-Frequency Glow Discharge. Looking for abbreviations of RFGD? It is Radio-Frequency Glow Discharge. Radio-Frequency Glow Discharge listed as RFGD. Radio-Frequency Glow Discharge - How is Radio-Frequency Glow Discharge abbreviated? Radio-Frequency Complementary Metal-Oxide Semi-Conductor; radio-frequency component; radio.