pyradef.dedx.constants

Constants for Energy Loss Calculations

Module Attributes

MC2	electron mass energy equivalent in eV
HBARC	reduced Planck constant times \(c\) in \(MeV\cdot fm\) (\(= eV\cdot nm\))
ALPHA	fine-structure constant, \(\alpha\)
Q	elementary charge
AMU	atomic mass constant energy equivalent in MeV
EPS0	electric constant, \(\epsilon_0\)
R	Rydberg constant times \(hc\) in eV
A0	Bohr radius
NA	Avogadro constant
C	\(2\cdot e^{\psi(1)}\)

Functions

I0(z2)

Mean excitation energy for target electrons