name = 'NH3'
symbol = 'N'
mass = 17.030651
color = 'blue'
vdW_radius = 0.155000

import numpy
b_coherent = (9.300 + 3*(-3.741))*fm
b_incoherent = numpy.sqrt(2.241**2 + 3*25.217**2)*fm
b_coherent_deut = (9.300 + 3*6.674)*fm
b_incoherent_deut = numpy.sqrt(2.241**2 + 3*4.022**2)*fm
del numpy