1# -*- coding: utf-8 -*- 2""" 3""" 4from __future__ import absolute_import 5 6from ._utils import _cd 7from ..unitquantity import UnitConstant 8 9 10Angstrom_star = UnitConstant( 11 'Angstrom_star', 12 _cd('Angstrom star'), 13 symbol='A*', 14 u_symbol='Å*' 15) 16d_220 = a_Si_220 = silicon_220_lattice_spacing = UnitConstant( 17 'silicon_220_lattice_spacing', 18 _cd('{220} lattice spacing of silicon'), 19 symbol='d_220', 20 u_symbol='d₂₂₀' 21) 22Cu_x_unit = UnitConstant( 23 'Cu_x_unit', 24 _cd('Cu x unit'), 25 symbol='CuKalpha_1', 26 u_symbol='CuKα₁' 27) 28a = a_Si_100 = lattice_parameter_of_silicon = UnitConstant( 29 'lattice_parameter_of_silicon', 30 _cd('lattice parameter of silicon') 31) 32Mo_x_unit = UnitConstant( 33 'Mo_x_unit', 34 _cd('Mo x unit'), 35 symbol='MoKalpha_1', 36 u_symbol='MoKα₁' 37) 38 39del UnitConstant, _cd 40