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local susceptibility tensor in direct space
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Fourier components of the local susceptibility tensor
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reciprocal-lattice vector
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polarization vector of an X-ray wave
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wavevector of an X-ray wave
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matrix corresponding to point-group operator
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polarization vector perpendicular to the scattering plane
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polarization vector in the scattering plane
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Bragg angle
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azimuthal angle of rotation about a reciprocal-lattice vector
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vector potential of the electromagnetic wave
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momentum of an electron
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frequency of an electromagnetic wave
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wavelength of the radiation
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energy of a discrete atomic level
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spin of an electron
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scattering amplitude
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scattering vector
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Levi-Civita symbol
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transition frequency for states a and c
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energy width of the excited state
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probability that the state of the scatterer is occupied
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tensor atomic factor
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structure-factor tensor of rank 2
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intensity of the reflection
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notation of the electric multipole transition. : the dipole; : the quadrupole
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notation of the magnetic multipole transition
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orbital moment of electron
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dipole–dipole tensor atomic factor
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symmetric part of the dipole–dipole tensor atomic factor
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antisymmetric part of the dipole–dipole tensor atomic factor
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third-rank tensor describing the dipole–quadrupole resonant X-ray scattering
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part of the third-rank tensor invariant under time inversion and symmetric under the permutation of j and k
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part of the third-rank tensor non-invariant under time inversion and symmetric under the permutation of j and k
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part of the third-rank tensor invariant under time inversion and antisymmetric under the permutation of j and k
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part of the third-rank tensor non-invariant under time inversion and antisymmetric under the permutation of j and k
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fourth-rank tensor describing the quadrupole–quadrupole resonant X-ray scattering
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Tr
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trace of matrix
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magnetic moment of an atom
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Y
LM
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spherical tensor
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component of the spherical tensor depending only on the incident and scattered radiation
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component of the spherical tensor associated with the tensor properties of the absorbing atom
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