# There is a factor :math:`C'` which is used to convert the magnetic
# moment to a magnetic scattering length density.  Here are the constants
# for M in A/m 
CPRIME_Am = 2.853e-12
# and for M in milliTesla (1 mT = 10 Gauss)
CPRIME_mT = 2.3164e-9
