free electron


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Related to free electron: Free electron gas, Free electron laser

free electron

n
(General Physics) any electron that is not attached to an ion, atom, or molecule and is free to move under the influence of an applied electric or magnetic field
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.free electron - electron that is not attached to an atom or ion or molecule but is free to move under the influence of an electric field
electron, negatron - an elementary particle with negative charge
References in periodicals archive ?
He covers the optical factor, polarization, gain, antenna issues, the ground wave, the reflection process, the ionosphere, instrumentation and interpretation, neutral propagation, WWV and channel probes, free electron propagation, neutral propagation, SVIS modes and methods, and a wide variety of other related subjects.
enz]) is quantized wave length of the longitudinal drift of a free electron with the rest mass [m.
Britain is to invest [pounds sterling]30m in the new European X-ray Free Electron Laser (XFEL) facility that will be capable of generating more power than the entire national grid to create a flash momentarily brighter than a trillion lightbulbs.
A free electron in a metal travels in average a distance equal to its mean free path, with a constant velocity [v.
Plasmons are the collective oscillation of a free electron cloud at optical frequencies, and nanoplasmonics is a field that focuses on controlling and manipulation them at nanometer dimensions.
Where V represents the vertically integrated ionospheric free electron density (known as Vertical Total Electron Content, Vertical TEC or VTEC), [eta]' stands for the ionization efficiency, C([chi]) represents the cross section for a solar-zenithal angle [chi], referred to the value C(0) at the sub-solar point, and [partial derivative]I(t)/[partial derivative]t is the sudden solar flux increase at the EUV geoeffective band, at time t.
The two guns include the free electron laser, essentially a super-powered death ray, and the railgun, which shoots bullets powered not by explosions, but by energy, Fox News reports.
Their topics include the structure and dynamics of solvated electrons, a history of pulse-radiolysis time-resolved microwave conductivity studies, chemical processes in heavy ion tracks, ultrafast pulse radiolysis methods, pulse radiolysis in supercritical krypton and xenon fluids, radiation-induced processes at solid-liquid interfaces, femtosecond events in bimolecular free electron transfer, the chemistry of sulfur-centered radicals, indirect effects of radiation-induced DNA damage, and radiation chemistry applied to antioxidant research.
The center will consist of different scale electron, positron and proton accelerators to study experimental particle and nuclear physics and to produce synchrotron radiation and free electron lasers to use in basic and applied sciences.
On other hand, if the doping of impurities are very high free electron (hole) phonon model is used to explain the conductivity.
Out in the "wild' a free electron can do what it wants and have any amount of energy that it wants.
The green light has been given for construction work to begin on the European X-Ray Free Electron Laser (XFEL), on 5 June, following the signing of a communique by the partner countries involved.