# 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.
"""Calcium Hydride."""
from armi.materials.material import SimpleSolid
[docs]class CaH2(SimpleSolid):
"""CalciumHydride."""
[docs] def setDefaultMassFracs(self):
"""Default mass fractions.
http://atom.kaeri.re.kr/ton/
iso atomic percent abundance and atomic mass of 20-calcium
| 20-Ca-40 96.941% 39.9625912
| 20-Ca-42 0.647% 41.9586183
| 20-Ca-43 0.135% 42.9587668
| 20-Ca-44 2.086% 43.9554811
| 20-Ca-46 0.004% 45.9536928
| 20-Ca-48 0.187% 47.9525335
atomic weight of H2 2.01565
weight of CaH2 42.09367285
| weight% of Ca-40 in CaH2 0.920331558
| weight% of Ca-42 in CaH2 0.006449241
| weight% of Ca-43 in CaH2 0.001377745
| weight% of Ca-44 in CaH2 0.02178264
| weight% of Ca-46 in CaH2 4.3668E-05
| weight% of Ca-48 in CaH2 0.002130278
| weight% of H2 in CaH2 0.047884869
"""
self.setMassFrac("CA", 0.952115131)
self.setMassFrac("H", 0.047884869)
[docs] def density(self, Tk=None, Tc=None):
"""Mass density.
http://en.wikipedia.org/wiki/Calcium_hydride
Returns
-------
density : float
grams / cc
"""
return 1.70