Results 21 to 30 of about 700,935 (209)

Tracing electron density changes in langbeinite under pressure

open access: yesIUCrJ, 2022
Pressure is well known to dramatically alter physical properties and chemical behaviour of materials, much of which is due to the changes in chemical bonding that accompany compression.
Roman Gajda   +4 more
doaj   +1 more source

Mid-point electron density profiles from oblique ionograms

open access: yesAnnals of Geophysics, 1996
A computationally efficient technique for the inversion of oblique ionograms into mid-point electron density profiles is described. The profile is given as the sum of quasi-parabolic functions suitable for ray tracing.
W. S. Kuklinski   +2 more
doaj   +1 more source

THE EFFECTS OF SOLAR ACTIVITY: ELECTRONS IN THE TERRESTRIAL LOWER IONOSPHERE [PDF]

open access: yesZbornik Radova: Geografski institut "Jovan Cvijić", 2017
Solar flare X-ray energy can cause strong enhancements of the electron density in the Earth’s atmosphere. This intense solar radiation and activity can cause sudden ionospheric disturbances (SIDs) and further create ground telecommunication interferences,
Vladimir A. Srećković   +3 more
doaj   +1 more source

Differential Resonance Probe (Electron Density Probe)

open access: yesAntarctic Record, 1975
This paper deals with "differential resonance probe method", which is one of the RF plasma probe techniques. This probe method is compared with other electron density probe method.
Yoshio TAKEYA, Shigeyuki MINAMI
doaj   +1 more source

An effective potential of electron-electron interaction in semi-infinite jellium

open access: yesCondensed Matter Physics, 2006
An effective potential of electron-electron interaction and a two-particle "density-density" correlator are calculated for semi-infinite jellium. Their asymptotics at large distances between electrons are studied in a plane parallel to the surface.
P.P.Kostrobij, B.M.Markovych
doaj   +1 more source

Shock-wave-based density down ramp for electron injection

open access: yesPhysical Review Special Topics. Accelerators and Beams, 2012
We demonstrate a sharp density transition for electron injection in laser wakefield acceleration through numerical study. This density transition is generated by a detached shock wave induced by a cylinder inserted into a supersonic helium gas flow. In a
Chunmei Wang   +3 more
doaj   +1 more source

Study on Electron Density Anomalies Possibly Related to Earthquakes Based on CSES Observations

open access: yesRemote Sensing, 2023
This research examines the correlation between seismic activity and variations in ionospheric electron density (Ne) using the data from the Langmuir probe (LAP) onboard the China Seismo-Electromagnetic Satellite (CSES) during nighttime.
Chengcheng Han   +8 more
doaj   +1 more source

Ionospheric S4 Scintillations from GNSS Radio Occultation (RO) at Slant Path

open access: yesRemote Sensing, 2020
Ionospheric scintillation can significantly degrade the performance and the usability of space-based communication and navigation signals. Characterization and prediction of ionospheric scintillation can be made from the Global Navigation Satellite ...
Dong L. Wu
doaj   +1 more source

First Experimental Quantitative Charge Density Studies of Advanced Intermediate of Vitamin D Analogues

open access: yesMolecules, 2022
Vitamins D are a group of fat-soluble secosteroids which play a regulatory role in the functioning of most cells. Rational design of new vitamin D analogs, of increased therapeutic potency and lowered calcemic side effects, requires high-resolution ...
Monika Wanat   +3 more
doaj   +1 more source

Effect of free valence on the electronic structure of n-alcohol radicals

open access: yesФизико-химические аспекты изучения кластеров, наноструктур и наноматериалов, 2023
The paper presents the results of a study of the effect of free valence (when a hydrogen atom is separated) on the electronic structure of n-alcohol radicals by the example of radicals of n-heptanol derivatives (C●H2-(CH2)6OH, CH3-C●H-(CH2)5OH, C2H5-C●H-(
V.V. Turovtsev   +3 more
doaj   +1 more source

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