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28 lines
760 B
Python
28 lines
760 B
Python
from pg_rad.physics import get_mass_attenuation_coeff
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class Isotope:
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"""Represents the essential information of an isotope.
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Args:
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name (str): Full name (e.g. Caesium-137).
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E (float): Energy of the primary gamma in keV.
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b (float): Branching ratio for the gamma at energy E.
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"""
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def __init__(
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self,
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name: str,
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E: float,
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b: float
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):
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if E <= 0:
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raise ValueError("primary_gamma must be a positive energy (keV).")
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if not (0 <= b <= 1):
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raise ValueError("branching_ratio_pg must be a ratio b in [0,1]")
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self.name = name
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self.E = E
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self.b = b
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self.mu_mass_air = get_mass_attenuation_coeff(E / 1000)
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