Theoretical Study of the Electric Field Distribution in the Cathode Fall Region of a Spherical Hollow Cathode Discharge

1999 ◽  
Vol 53 (12) ◽  
pp. 1638-1641 ◽  
Author(s):  
P. D. Mixon
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Hollow Cathode ◽  
Electric Field Distribution ◽  
Theoretical Study ◽  
Hollow Cathode Discharge ◽  
Cathode Fall ◽  
Spherical Hollow

scholarly journals Laser-Aided Measurement of Electric Field Distribution in a Hollow Cathode Discharge.

1991 ◽  
Vol 40 (5) ◽  
pp. 275-280 ◽  
Author(s):  
Hisashi SAKAI ◽  
Ken TAKIYAMA ◽  
Toshiaki FUJITA ◽  
Makoto TSUJI ◽  
Toshiatsu ODA ◽  
...  
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Hollow Cathode ◽  
Electric Field Distribution ◽  
Hollow Cathode Discharge

Optogalvanic Measurement of the Electric Field inside the Cathode Fall Region of Neon Hollow Cathode Discharge

1989 ◽  
Vol 43 (2) ◽  
pp. 245-248 ◽  
Author(s):  
Norihiro Ami ◽  
Akihide Wada ◽  
Yukio Adachi ◽  
Chiaki Hirose
Keyword(s):  
Glow Discharge ◽  
Electric Field ◽  
Hollow Cathode ◽  
Stark Effect ◽  
Cathode Surface ◽  
Hollow Cathode Discharge ◽  
Cathode Fall ◽  
Negative Glow ◽  
Optogalvanic Spectroscopy ◽  
The Difference

Radial distribution of the electric field in the cathode fall region of neon hollow cathode discharge has been derived through the observation of the linear Stark effect of the nd′ ( n = 10–12)-3 p′[½]1 transitions by two-step optogalvanic spectroscopy. The field strength was found to decrease monotonically from the cathode to the negative glow. The depth of the cathode fall region was 0.80 ± 0.05 mm, and the electric field at the cathode surface was 5.2 ± 0.2 kV/cm*—values which compare with the reported values of around 3–4 mm and 3–4 kV/cm in the cathode fall region of Ne glow discharge. The difference and similarity in the values of derived parameters are discussed.

Analysis of Electric Field Distribution in the Cylindrical Cathode Fall Region of Ar Hollow Cathode Discharges

1988 ◽  
Vol 42 (5) ◽  
pp. 815-819 ◽  
Author(s):  
Chiaki Hirose ◽  
Yukio Adachi ◽  
Takashi Masaki
Keyword(s):  
Theoretical Model ◽  
Electric Field ◽  
Electric Fields ◽  
Hollow Cathode ◽  
Electric Field Distribution ◽  
Preceding Paper ◽  
Cathode Fall ◽  
Negative Glow ◽  
Ion Density ◽  
Gas Pressures

A theoretical model, as described in the preceding paper, has been applied to the analysis of the observed radial distribution of the electric field which was measured in the cathode fall region of Ar hollow cathode discharges under pressures from 1 to 6 Torr and discharge currents from 12 to 20 mA. The distribution of ion density was calculated from the derived parameters, confirming the monotonie increase toward the negative glow region. The derived values of the parameters are briefly discussed in relation to the conceivable physical picture of the processes taking place in the relevant region. A list of observed electric fields at various radial positions, gas pressures, and discharge currents is also given.

Effect of Void Shape in Polymeric Insulator on the Electric Field Distribution

2017 ◽  
Vol 5 (3) ◽  
pp. 96
Author(s):  
I. Made Yulistya Negara ◽  
Dimas Anton Asfani ◽  
Daniar Fahmi ◽  
Yusrizal Afif
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Electric Field Distribution ◽  
Void Shape

Tuning the Localized Surface Plasmon Resonance of Al-Al2O3 Nanosphere Towards NIR Region by Gold Coating

2020 ◽  
Vol 12 ◽  
Author(s):  
Jyoti Katyal ◽  
Shivani Gautam
Keyword(s):  
Electric Field ◽  
Field Distribution ◽  
Dielectric Layer ◽  
Electric Field Distribution ◽  
Active Material ◽  
Visible Region ◽  
Field Enhancement ◽  
Localized Surface Plasmon ◽  
Sers Substrate ◽  
Al Nanoparticles

Background: A relatively narrow LSPR peak and a strong inter band transition ranging around 800 nm makes Al strongly plasmonic active material. Usually, Al nanoparticles are preferred for UV-plasmonic as the SPR of small size Al nanoparticles locates in deep UV-UV region of the optical spectrum. This paper focused on tuning the LSPR of Al nanostructure towards infrared region by coating Au layer. The proposed structure has Au as outer layer which prevent the further oxidation of Al nanostructure. Methods: The Finite Difference Time Domain (FDTD) and Plasmon Hybridization Theory has been used to evaluated the LSPR and field enhancement of single and dimer Al-Al2O3-Au MDM nanostructure. Results: It is observed that the resonance mode show dependence on the thickness of Al2O3 layer and also on the composition of nanostructure. The Au layered MDM nanostructure shows two peak of equal intensities simultaneously in UV and visible region tuned to NIR region. The extinction spectra and electric field distribution profiles of dimer nanoparticles are compared with monomer to reveal the extent of coupling. The dimer configuration shows higher field enhancement ~107 at 1049 nm. By optimizing the thickness of dielectric layer the MDM nanostructure can be used over UV-visible-NIR region. Conclusion: The LSPR peak shows dependence on the thickness of dielectric layer and also on the composition of nanostructure. It has been observed that optimization of size and thickness of dielectric layer can provide two peaks of equal intensities in UV and Visible region which is advantageous for many applications. The electric field distribution profiles of dimer MDM nanostructure enhanced the field by ~107 in visible and NIR region shows its potential towards SERS substrate. The results of this study will provide valuable information for the optimization of LSPR of Al-Al2O3-Au MDM nanostructure to have high field enhancement.

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