msspec_python3/doc/source/tutorials/RhO/sf.py

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# -*- encoding: utf-8 -*-
# vim: set fdm=indent ts=4 sw=4 sts=4 et ai tw=80 cc=+0 mouse=a nu : #
from msspec.calculator import MSSPEC, XRaySource
from msspec.utils import *
from ase import Atoms
import numpy as np
# Defining global variables
a0 = 6.0
symbols = ('Rh', 'O')
ke = 723.
level = '1s'
data = None
for symbol in symbols:
cluster = Atoms(symbol*2, positions = [(0,0,0), (0,0,a0)])
[a.set('mt_radius', 1.5) for a in cluster]
# Create the calculator
calc = MSSPEC(spectroscopy = 'PED')
calc.source_parameters.energy = XRaySource.AL_KALPHA
calc.set_atoms(cluster)
cluster.absorber = 0
# compute
data = calc.get_scattering_factors(level=level, kinetic_energy=ke, data=data)
data.view()