free electron


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

free electron

An electron that is not bound to an atom, molecule, or ion but is free to move under the influence of an electric or magnetic field.

free electron

[¦frē i′lek‚trän]
(physics)
An electron that is not constrained to remain in a particular atom, and is therefore able to move in matter or in a vacuum when acted on by external electric or magnetic fields.
References in periodicals archive ?
Let the longitudinal and radial distribution of the free electrons of the conductor will be determined on the assumption that their spatial distribution movement and accordingly to the coordinates r and z in the first approximation subject to a one-dimensional wave temporal Schrodinger equation [3].
On the other hand in the collision process, the free electron loss its memory.
Most part of these free electrons are generated by the continuous and slowly varying EUV solar radiation flux, which is the most geoeffective and responsible, in particular, of the unionization (and heating) of predominant F, and E regions within the Ionosphere (see Kelley 2009).
The Act directs the Navy to develop a broader affordable strategy on laser systems and terminates the Navy's free electron laser due to concerns over operational technical challenges.
Free electron lasers show promise for a wide array of applications in defense and manufacturing, and they support advanced studies in chemistry, physics, biology and medical science.
3/2] + free electron configuration to be produced by the succession of eigenvalues
Madey, who created free electron lasers--will be the first ever to integrate free electron laser and LIDAR technologies for this purpose.
Sprangle's directed-energy research includes high-energy laser propagation, free electron lasers, fiber-laser directed energy systems, laser power beaming, ultra-short, high-intensity laser physics, advanced methods of detection of radioactive material as well as advanced radiation and acceleration physics.
These atoms (molecules) of a substance will be the main <<suppliers>> of additional free electrons in the LL channel, the electron temperature [T.
5 within which the positive energy of the free electron and the negative energy of the PV overlap, allowing electron-positron pairs to be excited; surrounding this combination is a spherical annulus of radius [r.
RIKEN and the Japan Synchrotron Radiation Research Institute (JASRI) created this record-breaking light using SACLA, a cutting-edge X-ray Free Electron Laser (XFEL) facility unveiled by RIKEN in February 2011 in Harima, Japan.