Plot a chart of the nuclides.

Use the nuclide directory of ARMI to plot a chart of the nuclides coloring the squares with the natural abundance.

More details

Our extended tutorial for nuclides and detailed nucDirectory docs may also be of interest.

import matplotlib.pyplot as plt

from armi.nucDirectory import nuclideBases
from armi import configure

configure(permissive=True)

xyc = []
for name, base in nuclideBases.byName.items():
    if not base.a:
        continue
    xyc.append((base.a - base.z, base.z, base.abundance or 0.5))
x, y, c = zip(*xyc)
plt.figure(figsize=(12, 8))
plt.scatter(x, y, c=c, marker="s", s=6)
plt.title("Chart of the nuclides")
plt.xlabel("Number of neutrons (N)")
plt.ylabel("Number of protons (Z)")
plt.show()