نتایج جستجو برای: glow discharge plasma

تعداد نتایج: 451225  

2017
Yu. I. Belchenko A. S. Kupriyanov

2014 The pure-hydrogen discharges in surface-plasma sources with a semiplanotron electrode configuration are described. In short pulse (10-3 s) mode the extracted Hemission density was up to 1.1 A/cm2 at cathode discharge current density 60 A/cm2. The multi-slit short pulse extraction delivered the Houtput with current of up to 1 A. In the long pulse (0.6 s) mode the Hyield was 0.15 A at discha...

2002
J. Dash H. Kozima

Uranium foils were attached to the cathode of a glow discharge apparatus. A plasma of either hydrogen or deuterium ions was used to bombard the uranium. The rates of alpha, beta, and gamma radiation emissions were significantly greater for the bombarded uranium than for the original material.

Journal: :The Analyst 2013
Cheng Zhen Yueming Zhou Ning Zhang Jiyun Wang Caiqiao Xiong Suming Chen Zongxiu Nie

Chinese liquors are often a very important part of social event in China. Driven by high profit, some illegal traders often use inferior liquors instead of the products with high quality to cheat the customer. Therefore, it is highly required to authenticate Chinese liquors. In this paper a novel method based on ambient glow discharge ionization mass spectrometry has been developed to different...

2005
Mark J Kushner

Microdischarge devices (MDs) share many properties with their macroscopic counterparts while having unique features resulting from their ability to sustain large current densities and power depositions on a continuous basis at pressures approaching atmospheric. The dynamics of cylindrical, metal–dielectric–metal sandwich MDs sustained in Ar having characteristic sizes of a few hundred micrometr...

Journal: :Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy 2000
L Nemes M Mohai Z Donkó I Bertóti

Emission spectra from a DC plasma discharge of nitrogen with a graphite cathode used for deposition of CNx layers were investigated in the visible range 350-900 nm. The spectra recorded at low and high resolution from both the negative glow and the positive column of the discharge were studied separately. All spectra are dominated by neutral and ionised N2 emission. In the positive column the v...

Journal: :Journal of Physics: Conference Series 2006

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