# Copyright 2019 TerraPower, LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
"""Hafnium is an element that has high capture cross section across multiple isotopes."""
from armi.nucDirectory import nucDir
from armi.materials.material import SimpleSolid
[docs]class Hafnium(SimpleSolid):
[docs] def setDefaultMassFracs(self):
for a, abund in nucDir.getNaturalMassIsotopics("HF"):
self.setMassFrac("HF{0}".format(a), abund)
[docs] def density(self, Tk=None, Tc=None):
r"""http://www.lenntech.com/periodic/elements/hf.htm."""
return 13.07