name = 'helium'
symbol = 'He'

atomic_number = 2
atomic_number_deut = 2

mass = [(3.0160290000000001, 0.0001), (4.0026029999999997, 99.999899999999997)]
mass_deut = 4.00260201343

color = 'black'

vdW_radius = 0.14

b_coherent = 3.26*fm
b_incoherent = 0*fm
b_coherent_deut = 3.26*fm
b_incoherent_deut = 0*fm