BoteSalvatICX
Implements the Bote-Salvat Ionization Cross Section
These functions deliver the total cross section for electron impact ionization of K, L and M sub-shells of neutral atoms of the elements from hydrogen (Z=1) to einsteinium (Z=99). The model is a parameterization of numerical cross sections computed with the distorted-wave and the plane-wave first-Born approximations.
References:
- D. Bote and F. Salvat, Calculations of inner-shell ionization by electron impact with the distorted-wave and plane-wave Born approximations, Phys. Rev. A77, 042701 (2008).
- D. Bote et al., Cross sections for ionization of K, L and M shells of atoms by impact of electrons and positrons with energies up to 1 GeV. Analytical formulas, Atomic Data and Nuclear Data Tables 95.6 (2009) 871-909.
Using BoteSalvatICX
The
Jupyter notebook in
docs/src
provides examples.
The package was designed to minimize dependencies while providing a focused set of functionality.
BoteSalvatICX.edgeenergy
—
Method
edgeenergy(::Type{BoteSalvat2009}, z::Integer, subshell::Int)
The default value for the edge energy as provided by Bote & Salvat (in eV).
- z is the atomic number 1:99
- subshell is 1->K, 2->L₁, 3->L₂, ..., 9->M₅
BoteSalvatICX.hasedge
—
Method
hasedge(::Type{BoteSalvat2009}, z::Integer, subshell::Int)
Is data available for the the specified element and sub-shell?
-
z
is the atomic number 1:99 -
subshell
is 1->K, 2->L₁, 3->L₂, ..., 9->M₅
BoteSalvatICX.ionizationcrosssection
—
Function
ionizationcrosssection(
::Type{BoteSalvat2009},
z::Int,
subshell::Int,
energy::AbstractFloat,
edgeenergy::AbstractFloat = edgeenergy(BoteSalvat2009, z, subshell),
)
Computes the inner sub-shell ionization cross section for energetic electrons. Asserts if
z
or
subshell
is out of range. Use is hasedge(BoteSalvat2009, ...) to determine whether an
element/sub-shell pair is available.
-
z
: The atomic number z in the range 1:99 -
subshell
: The atomic sub-shell being ionized 1->K, 2->L₁, 3->L₂, ..., 9->M₅ -
energy
: The kinetic energy of the incident electron in eV -
edgeenergy
: The edge energy of the sub-shell in eV