isotopic_abundance¶
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plasmapy.particles.atomic.
isotopic_abundance
(isotope: plasmapy.particles.particle_class.Particle, mass_numb: Optional[numbers.Integral] = None) → numbers.Real¶ Return the isotopic abundances if known, and otherwise zero.
Parameters: Returns: iso_comp – The relative isotopic abundance in the terrestrial environment.
Return type: Raises: Notes
Isotopic composition data are most readily available for the terrestrial environment, so this function may not be wholly appropriate for space and astrophysical applications.
The data retrieved from this routine are those recommended by NIST as of 2017.
Examples
>>> isotopic_abundance('Pb-208') 0.524 >>> isotopic_abundance('hydrogen', 1) 0.999885