scippneutron.conversion.tof.wavelength_from_Q#

scippneutron.conversion.tof.wavelength_from_Q(*, Q, two_theta)[source]#

Compute the wavelength from momentum transfer.

The result is the de Broglie wavelength

$$\lambda =\frac{4\pi \sin \theta }{Q}$$

Parameters:

• Q (Variable) – Momentum transfer.

• two_theta (Variable) – Scattering angle $2\theta$.

Returns:

Variable – Wavelength $\lambda$ Has unit ångström.

See also

scippneutron.conversions.beamline

Definition of two_theta.