Calculates the total ionization cross section for a Neutral Hydrogen atom
in the n
state colliding with a ion with charge q
at energy eb
Uses specialized cross sections if available else uses generic cross sections
Type | Intent | Optional | Attributes | Name | ||
---|---|---|---|---|---|---|
real(kind=Float64), | intent(in) | :: | eb | Relative collision energy [keV/amu] |
||
integer, | intent(in) | :: | q | Ion charge |
||
integer, | intent(in) | :: | n | Initial atomic energy level/state |
Cross Section []
function Aq_ioniz_n(eb, q, n) result(sigma)
!+ Calculates the total ionization cross section for a Neutral Hydrogen atom
!+in the `n` state colliding with a ion with charge `q` at energy `eb`
!+
!+@note Uses specialized cross sections if available else uses generic cross sections
!+
!+###Equation
!+$$ A^{q+} + H(n) \rightarrow A^{(q-1)+} + H^+, q \gt 3 $$
!+
!+###References
!+* Page 152 in Ref. 5 [[atomic_tables(module)]]
!+* Page 154 in Ref. 5 [[atomic_tables(module)]]
!+* Page 160 in Ref. 5 [[atomic_tables(module)]]
real(Float64), intent(in) :: eb
!+ Relative collision energy [keV/amu]
integer, intent(in) :: q
!+ Ion charge
integer, intent(in) :: n
!+ Initial atomic energy level/state
real(Float64) :: sigma
!+ Cross Section [\(cm^2\)]
if((q.eq.5).and.(n.eq.1)) then
sigma = B5_ioniz_1_janev(eb)
return
endif
if((q.eq.6).and.(n.eq.1)) then
sigma = C6_ioniz_1_janev(eb)
return
endif
sigma = Aq_ioniz_n_janev(eb, q, n)
end function Aq_ioniz_n