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It means "between planes". Usually this is interplanar distace which is the distance between planes of atoms or molecules in a crystal lattice. Any one define the above with diagram?
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β 15y ago
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How do you find interplanar spacing in crystals?
interplaner spacing
A crystal has an interplanar spacing of 98.2 pm. Using first order diffraction, what is the X-ray wavelength required to produce a reflection with an angle of 17.5 degrees?
Using d sin π = nπ, d=98.2pm, n=1, π=17.5ΒΊ 98.2sin(17.5ΒΊ) = 1π π=29.53pm
Why only x rays are used for study of crystal structure?
Actually cystal is a three dimensional grating with grating element(interplanar spacing)as of the order of 1 angstron unit. Also the wavelength of X rays is of the order of 1 angstron which satisfies basic condition of diffraction(Bragg's law). Gamma rays are not used for the same reason as well as gamma ray production is not high enough, difficult to focus and high intense enough to create particl and antiparticle.
Why can not x rays pass through?
bcz x rays have very very small wave length.....Ans: X-rays are diffracted by crystal because wave length of X-rays and interplanar spacing in the crystals is of the same order, (angstrom, Å), so it satisfies Bragg condition for diffraction2dsinθ= nλWhere n is the integer and determined by the order given, λ is the wave length of the x-rays, d is the spacing between the planes in the atomic lattice, and θ is the angle between the incident ray and the scattering planes (diffracted angle).
