Bragg's law

(redirected from Bragg reflection)
Also found in: Encyclopedia.
Related to Bragg reflection: Bragg scattering

Bragg's law

 (brăgz)
n.
The fundamental law of x-ray crystallography, nλ = 2dsinθ, where n is an integer, λ is the wavelength of a beam of x-rays incident on a crystal with lattice planes separated by distance d, and θ is the Bragg angle.

[After Sir William Henry Bragg and Sir William Lawrence Bragg.]

Bragg's law

n
(General Physics) the principle that when a beam of X-rays of wavelength λ enters a crystal, the maximum intensity of the reflected ray occurs when sin θ = nλ/2d, where θ is the complement of the angle of incidence, n is a whole number, and d is the distance between layers of atoms
[C20: named after William and Lawrence Bragg]
References in periodicals archive ?
In case of periodicity perturbation, the Bragg reflection becomes more complicated and gains great practical value [5].
High order plasmonic Bragg reflection in the metal-isulator-metal waveguide Bragg grating," Optics Express, Vol.
This negative effective group of refraction may be caused by wave interference from Bragg reflection.
B] of the Bragg reflection, and the longitudinal size of the pulse [l.
Precious opal is composed of equallysized silica spheres in a closely-packed lattice and displays variable colours with the angle of observation, depending on the diameter of the spheres, which may vary between 150 and 300 nm (the characteristic opal iridescence is caused by Bragg reflection from the lattice planes, similar to that of Denisyuk volume reflection holograms and Lippmann photographs).
The [lambda]/3 peak is minimized using Bragg reflection from polycrystalline bismuth.
Crystal size distribution drastically decreases at Bragg reflection, 2[theta] = 28.
314 nm by choosing the {111} Bragg reflection for the interferometer (hence [lambda] = 0.
The integrated intensity for a magnetic Bragg reflection is given (for a simple collinear magnetic structure) by (61)
91 corresponding to Bragg reflections (111), (200), (202) and (311) cubic planes of Ag are observed and compared with COD (Crystallography Open Database), silver file No.