Scattering Amplitude

Also found in: Wikipedia.

scattering amplitude

[′skad·ə·riŋ ‚am·plə‚tüd]
(quantum mechanics)
A quantity, depending in general on the energy and scattering angle, which specifies the wave function of particles scattered in a collision, and whose squared modulus is proportional to the number of particles scattered in a given direction.

Amplitude, Scattering


in the quantum theory of collisions, a quantity which numerically describes the collisions of microparticles. A beam of particles (with a determined impulse) which is falling on a target scatters, and the particles can deflect in any direction. The relative number of particles scattering at different angles to the primary direction of the beam depends on the particular law governing the interaction of the scattered particles with the target particles. The probability of a particle’s scattering at a given angle is determined by the scattering amplitude—or by the modulus square of the scattering amplitude, to be exact.


References in periodicals archive ?
Lesselier, "Two numerical methods for recovering small inclusions from the scattering amplitude at a fixed frequency," SIAM Journal on Scientific Computing, vol.
The editors have organized the contributions that make up the main body of the text in nine chapters devoted to albegras in reconstruction of manifolds, a review on large k minimal spectral k-partitions and PleijelEs Theorem, increasing stability for near field from the scattering amplitude, and a wide variety of other related subjects.
or -]]([omega] [right arrow] [theta]; E) the scattering amplitude by 2[pi][[alpha].
22] are the elements of the scattering amplitude function matrix for the raindrop with the diameter D, which are the functions of scattering angle [THETA] (cos = [THETA] = [[?
Due to the separability of the electric susceptibility of materials and the etching depth h << r, we can assume a spatial dependence of scattering potential of the scattering medium and calculate the scattering amplitude laterally and in-depth, respectively,
Finally, we propose a simple method based on the dependent scattering amplitude to assist paint formulators facing the task of improving the hiding power of a white paint either by increasing the quantity of pigments or by improving their spatial state of dispersion.
0] is the scattering amplitude between a helium atoms and neutrons; [mu] = m x [m.
Traditionally, the scattering amplitude of polarized neutrons with a polarized nucleus is described as follows:
Note that there is a combined translational and reflectional symmetry mapping thevectorized real scattering amplitude distribution onto itself (cf.
into the integral term of the SSA-II method, the scattering amplitude can be revised as
Taking into account the far-field approximation, the scattering amplitude matrix corresponding to first-order SSA (SSA1) can be modified as