is_stable¶
-
plasmapy.particles.
is_stable
(particle: plasmapy.particles.particle_class.Particle, mass_numb: Optional[numbers.Integral] = None) → bool¶ Return
True
for stable isotopes and particles andFalse
for unstable isotopes.Parameters: Returns: is_stable –
True
if the isotope is stable,False
if it is unstable.Return type: Raises: Examples
>>> is_stable("H-1") True >>> is_stable("tritium") False >>> is_stable("e-") True >>> is_stable("tau+") False