Determination of electron energy probability function in low-temperature plasmas from current – Voltage characteristics of two Langmuir probes filtered by Savitzky–Golay and Blackman window methods

2015 ◽  
Vol 15 (10) ◽  
pp. 1173-1183 ◽  
Author(s):  
Hyun-Joon Roh ◽  
Nam-Kyun Kim ◽  
Sangwon Ryu ◽  
Seolhye Park ◽  
Seok-Hwan Lee ◽  
...  
Keyword(s):  
Low Temperature ◽  
Electron Energy ◽  
Probability Function ◽  
Langmuir Probes ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Low Temperature Plasmas

Point-contact spectroscopy probing the NbSe3 CDW gap in different crystallographic orientations

2002 ◽  
Vol 12 (9) ◽  
pp. 119-122
Author(s):  
A. A. Sinchenko ◽  
P. Monceau
Keyword(s):  
Magnetic Field ◽  
Low Temperature ◽  
Applied Magnetic Field ◽  
Energy Gap ◽  
Point Contact ◽  
Point Contacts ◽  
Energy Gaps ◽  
Current Voltage ◽  
Current Voltage Characteristics ◽  
Crystallographic Orientations

We have measured the differential current-voltage characteristics of normal metal-NbSe3 direct point contacts (without insulating barrier) formed along different crystallographic orientations under applied magnetic field with different orientations. At low temperature two energy gaps, $\Delta_{p1}$ and $\Delta_{p2}$, corresponding to the high and the low-temperature CDW were observed simultaneously as a singulanty of the excess resistance which is attributed to an analog of Andreev reflection, in which the incident electron reflects on the Peierls energy gap barriers with its charge unchanged. An applied magnetic field up to 8.5 T does not lead to a change in the density of states and in the Peierls energy gaps, suggesting that the large magnetoresistance observed in NbSe3 might not result from the change in the CDW order parameter with magnetic field but rather from the increase of scattering of non-condensed to CDW carriers.

Determination of Ar metastable atom densities in Ar and Ar/H2inductively coupled low-temperature plasmas

2013 ◽  
Vol 46 (48) ◽  
pp. 485202 ◽  
Author(s):  
N Fox-Lyon ◽  
A J Knoll ◽  
J Franek ◽  
V Demidov ◽  
V Godyak ◽  
...  
Keyword(s):  
Low Temperature ◽  
Metastable Atom ◽  
Low Temperature Plasmas
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