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1.
Results are presented from studies of the electric and emission parameters of transverse volume discharges in neon-sulfur-hexafluoride-propane mixtures at a total pressure of 3–12 kPa. The spatial characteristics of a transverse volume discharge, the plasma radiation spectra in the 130- to 550-nm wavelength range, the waveforms of the discharge voltage and current, and the yield of carbonic products of propane decomposition are investigated at different pressures and different composition of the Ne-SF6-C6H14 mixture. 相似文献
2.
A. K. Shuaibov A. I. Minya Z. T. Gomoki A. G. Kalyuzhnaya A. I. Shchedrin 《Technical Physics》2010,55(8):1222-1225
The emission characteristics of a pulsed-periodic UV radiation source are reported. The source excited by a pulsed-periodic
capacitive discharge initiated in helium-iodine vapor, neon-iodine vapor, or krypton-iodine vapor mixtures radiates in the
spectral range 200–450 nm. It is shown that most of the plasma radiation power concentrates in the integral line of the iodine
atom (206.2 nm) and in the D′-A′ band of the iodine molecule with a maximum at 342 nm. The radiation intensity of the lamp is optimized in accordance with
the partial pressure of the inert gases. The discharge plasma parameters that are of interest for simulating the process kinetics
and the output characteristics of an UV source based on molecular iodine, atomic iodine, and xenon iodide are calculated in
helium-iodine vapor and xenon-iodine vapor mixtures. 相似文献
3.
The emission parameters of a pulsed capacitive discharge initiated in helium-iodine and neon-iodine mixtures are reported.
The discharge plasma emits at wavelengths of 183.0 and 206.2 nm, which correspond to iodine atom spectral lines. The capacitive
discharge is initiated in a cylindrical quartz tube with an electrode distance of 10 cm. The discharge radiation is optimized
in exciting pulse repetition rate and helium and neon pressures in He(Ne)-I2 mixtures. The optimal pressures of helium, neon, and iodine vapor fall into the ranges 0.8–2.0 kPa, 0.5–1.0 Pa, and ≤60 Pa,
respectively. 相似文献
4.
Radiation of a nanosecond barrier discharge in a mixture of krypton, argon, and carbon-tetrachloride vapor is studied in the spectral range of 150–300 nm. The plasma radiation spectra and the dependences of the intensities of the 258 nm Cl2(D′ → A′), 222 nm KrCl(B → X), and 175 nm ArCl(B → X) bands on the partial pressure of liquid freon vapor, argon, and krypton, as well as on the discharge excitation conditions, are studied. The optimal compositions of gas mixtures for creating a broadband UV-VUV emitter based on the band system of argon chloride, krypton chloride, and chlorine molecule are determined. 相似文献
5.
A. K. Shuaibov A. I. Minya R. V. Gritsak Z. T. Gomoki I. V. Shevera 《Technical Physics》2013,58(3):459-461
The spectrum of radiation and the results of optimization are presented for a UV lamp that works on the He-D2O mixture and is pumped using a repetitively pulsed barrier discharge. The dependences of the radiation intensity of the OD (X-A) band with the wavelength λ ≈ 309 nm on the partial pressure of the heavywater vapor, working voltage across the working capacitor of the high-voltage modulator, and repetition rate of the current pulses are studied. 相似文献
6.
The emission characteristics of a pulse-periodic excilamp with three dielectric barriers based on the 222-nm KrCl(X-B) and 248-nm KrF(X-B) emission bands have been investigated. The working gases of the lamp were mixtures of krypton with low-aggressivity halogen carriers (SF6, CCl4). Optimal compositions of Kr-SF6 and Kr-CCl4 mixtures for obtaining the maximum intensity of the system of 222-nm KrCl(X-B) and 248-nm KrF(X-B) bands have been determined. The results of lamp optimization depending on the parameters of the source of pulse-periodic short-duration barrier discharge are presented. 相似文献
7.
Shuaibov A. K. Gomoki Z. T. Minya A. I. Shevera I. V. Dzhupina Ya. Yu. 《Technical Physics》2012,57(2):311-313
The characteristics of a pulsed-periodic short-barrier-discharge emitter operating at wavelength λ = 248 nm KrF(X-B) are investigated. The operating mixtures of the UV lamp are low-aggressive krypton-sulfur hexafluoride (SF6) mixtures at
a total pressure in the range 1–50 kPa and a SF6 partial pressure of 0.1–0.4 kPa. The spectral characteristics of the plasma are studied, and the 248 nm KrF(X-B) band luminosity is optimized in terms of the operating mixture composition, pump voltage, and pulse repetition rate. The
mean power of UV emission from the lateral surface of the cylindrical lamp is estimated. 相似文献
8.
A three-port electrical and optical model of LiTaO3 probes with a high-bandwidth coplanar waveguide (CPW) test structure is developed in this paper. The three-port model is constructed by combining the full wave field simulation and the neural network techniques. The three-port model has the same accuracy as the full wave modeling, but its characteristics are directly obtained from the neural network weighting parameters rather than the complicated full wave simulation. With this model, both invasiveness and waveform distortion in the external E-O sampling can be de-embedded. 相似文献
9.
Minya Zhang David R. Conn 《International Journal of Infrared and Millimeter Waves》1998,19(2):233-242
In this paper we present a new transmission line microcavity model for vertical cavity surface emitting lasers (VCSEL). The model is based on optical wave equations and implemented with state-space techniques to predict the lasing modes and analyze the decay properties of the Fabry-Perot (FP) cavities. The model is used to analyze microcavities in both time and frequency domains in terms of material and physical parameters of the lasers, and provide a simple and fast way to optimize the cavity length, reflective mirror and active region of the lasers. 相似文献
10.
The subject of investigation is the emission properties of a pulsed-periodic barrier discharge initiated by submicrosecond
pulses (f = 40–1000 Hz) in He-I2 and Ar-I2 mixtures. The investigation is carried out in the spectral range 200–400 nm at a pressure of the working medium of 1–100
kPa and an iodine partial pressure of 130–200 Pa. The dependence of UV emission from the plasma of the barrier discharge at
the 342 nm I2(D′ → A′) band and the iodine atom spectral line at 206.2 nm on the argon and helium partial pressures, excitation pulses
repetition rate, and charging voltage of the capacitor of a short high-voltage pulse modulator is optimized. The contribution
of the 206.2 nm I* spectral line to the UV emission of the barrier discharge is estimated. 相似文献