scholarly journals Very high electron temperatures in the daytime F region at Sondrestrom

1984 ◽  
Vol 11 (9) ◽  
pp. 919-922 ◽  
Author(s):  
Wlodek Kofman ◽  
Vincent B. Wickwar
Keyword(s):  
High Electron ◽  
F Region ◽  
Very High

Partially planar BP3with high electron mobility as a phosphorene analog

2017 ◽  
Vol 5 (43) ◽  
pp. 11267-11274 ◽  
Author(s):  
Fazel Shojaei ◽  
Hong Seok Kang
Keyword(s):  
Electron Mobility ◽  
High Electron ◽  
Two Dimensional ◽  
High Electron Mobility ◽  
Stacking Pattern ◽  
Very High ◽  
Bilayer Formation

We propose a two-dimensional BP3crystal with a very high electron mobility of 4.6 × 104cm2V−1s−1. Bilayer formation, specifically stacking pattern AA, results in an even higher electron mobility of ∼3.7 × 105cm2V−1s−1, which is ∼2500 times larger than that of an α phosphorene bilayer.

scholarly journals Very high channel conductivity in low-defect AlN/GaN high electron mobility transistor structures

2008 ◽  
Vol 93 (8) ◽  
pp. 082111 ◽  
Author(s):  
A. M. Dabiran ◽  
A. M. Wowchak ◽  
A. Osinsky ◽  
J. Xie ◽  
B. Hertog ◽  
...  
Keyword(s):  
Electron Mobility ◽  
High Electron Mobility Transistor ◽  
High Electron ◽  
High Electron Mobility ◽  
Channel Conductivity ◽  
Very High

A Comparison of (100) Hg1−x Cdx Te and Hg1−x ZnxTe Grown By Molecular Beam Epitaxy

1987 ◽  
Vol 102 ◽  
Author(s):  
R. D. Feldman ◽  
R. F. Austin ◽  
P. M. Bridenbaugh
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Near Infrared ◽  
Wave Length ◽  
High Electron ◽  
Mbe Growth ◽  
Suitable Material ◽  
Zn Content ◽  
Length Range ◽  
Very High

ABSTRACTFilms of HgCdTe with x < 0.6 and of HgZnTe with x < 0.26 have been grown by molecular beam epitaxy (MBE). Very high electron mobilities have been achieved for both materials in the small bandgap region. Hall mobilities at 77K reach 4.8 × 105 cm2 /V-s for Hg0 87 Zn0.13 Te, and 3.1 × 105 cm2/V-s for Hg0.87 Zn0.13 Te. HgCdTe growth was easily extended to the 1.5 – 3 μm wave length range. Attempts to extend HgZnTe to these bandgaps were unsuccessful due to defects that are induced by surface roughness in high Zn-content films. These results suggest that HgCdTe is the more suitable material for MBE growth for near infrared applications.

Ionospheric electron-content measurements during the second space-plasma negative-ion experiment (SPINEX-2)

1987 ◽  
Vol 65 (4) ◽  
pp. 403-408 ◽  
Author(s):  
J. A. Fulford ◽  
J. W. MacDougall ◽  
P. A. Forsyth ◽  
M. Mendillo ◽  
P. A. Bernhardt
Keyword(s):  
Space Plasma ◽  
Negative Ion ◽  
Electron Content ◽  
Free Electrons ◽  
Chemical Release ◽  
F Region ◽  
Active Experiment ◽  
Ionospheric Electron Content ◽  
Ion Effects ◽  
Very High

The second space-plasma negative-ion experiment (SPINEX-2), a chemical-release active experiment to investigate negative-ion effects in the ionospheric F region, is described by Mendillo et al. This paper describes the electron-content measurements in somewhat more detail than would be appropriate there. The circumstances of the experiment, particularly the use of a vehicle with a very high spin rate, presented some unusual challenges during interpretation of the electron-content data. These are described. The resulting profiles show clearly that the chemical release caused a very significant "hole" in the ionosphere. Under certain fairly realistic assumptions, the actual number of free electrons removed from the region of the peak of the ionospheric F layer is estimated to be about 4 × 1025. The same assumptions lead to a simple radial distribution of the depleted region about the rocket trajectory in the neighborhood of the release.

Very high latitude F-region irregularities observed by HF-radar backscatter

1983 ◽  
Vol 10 (9) ◽  
pp. 904-907 ◽  
Author(s):  
K. B. Baker ◽  
R. A. Greenwald ◽  
R. T. Tsunoda
Keyword(s):  
High Latitude ◽  
Hf Radar ◽  
Radar Backscatter ◽  
F Region ◽  
Very High

Climatology of very high ionospheric electron temperature occurrences as observed by Swarm constellation

2021 ◽  
Author(s):  
Igino Coco ◽  
Giuseppe Consolini ◽  
Paola De Michelis ◽  
Fabio Giannattasio ◽  
Michael Pezzopane ◽  
...  
Keyword(s):  
Electron Temperature ◽  
Physical Parameters ◽  
High Electron ◽  
Langmuir Probes ◽  
Swarm Satellites ◽  
High Electron Temperature ◽  
Physical Quantities ◽  
Very High

&lt;p&gt;After more than seven years in orbit, the ESA Swarm satellites have provided an already large statistics of measurements of several important physical parameters of the ionosphere. In particular, electron density and temperature are measured by pairs of Langmuir Probes, and the quality of such data is now considered good enough for many studies, either science cases or climatological characterisations. Concerning specifically the electron temperature, a rather elusive parameter which is quite difficult to correctly characterize &amp;#8220;in situ&amp;#8221;, and for which the past literature is not so abundant with respect to other ionospheric physical quantities, the overall distributions observed by Swarm are qualitatively consistent with expectations from theory and past observations. However, a non-negligible amount of high and very high electron temperature values is regularly observed, whose distributions and properties are not trivial. In this study we aim at characterizing such features statistically as a function of latitude, local time, and season.&lt;/p&gt;

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