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using math to get ln(2)

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Jonathan Shimwell 2022-06-08 17:34:10 +01:00
parent 5bf60560af
commit 47e242551d
1 changed files with 2 additions and 1 deletions
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3
openmc/material.py
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@ -3,6 +3,7 @@ from collections.abc import Iterable
from copy import deepcopy
from numbers import Real
from pathlib import Path
import math
import re
import warnings
from xml.etree import ElementTree as ET
@ -714,7 +715,7 @@ class Material(IDManagerMixin):
for key, value in atoms_per_barn_cm2.items():
if key in openmc.data.HALF_LIFE.keys():
atoms = value[1] * self.volume * 1e24
activity = 0.693 * atoms / openmc.data.HALF_LIFE[key]
activity = math.log(2) * atoms / openmc.data.HALF_LIFE[key]
print('activity', activity)
total_activity += activity