neutronpy.instrument.TripleAxisInstrument.calc_resolution_in_Q_coords

TripleAxisInstrument.calc_resolution_in_Q_coords(Q, W)

For a momentum transfer Q and energy transfers W, given experimental conditions specified in EXP, calculates the Cooper-Nathans or Popovici resolution matrix RM and resolution prefactor R0 in the Q coordinate system (defined by the scattering vector and the scattering plane).

Parameters:

Q : ndarray or list of ndarray

The Q vectors in reciprocal space at which resolution should be calculated, in inverse angstroms

W : float or list of floats

The energy transfers at which resolution should be calculated in meV

Returns:

[R0, RM] : list(float, ndarray)

Resolution pre-factor (R0) and resolution matrix (RM) at the given reciprocal lattice vectors and energy transfers

Notes

Translated from ResLib 3.4c, originally authored by A. Zheludev, 1999-2007, Oak Ridge National Laboratory