e_excit_n_m Function

  1. atomic_tables.f90
  2. atomic_tables
  3. e_excit_n_m

public function e_excit_n_m(eb, n, m) result(sigma)

Calculates an array of cross sections for a electron-Hydrogen impact excitation transition from the n m state at energy eb

Equation

References

Arguments

TypeIntentOptionalAttributesName
real(kind=Float64), intent(in) :: eb

Collision energy [keV]
integer, intent(in) :: n

Initial atomic energy level/state
integer, intent(in) :: m

Final atomic energy level/state

Return Value real(kind=Float64)

Cross Section []


Calls

proc~~e_excit_n_m~~CallsGraph proc~e_excit_n_m e_excit_n_m proc~e_excit_n e_excit_n proc~e_excit_n_m->proc~e_excit_n proc~e_excit_1_janev e_excit_1_janev proc~e_excit_n->proc~e_excit_1_janev proc~e_excit_2_3_janev e_excit_2_3_janev proc~e_excit_n->proc~e_excit_2_3_janev proc~e_excit_f e_excit_f proc~e_excit_n->proc~e_excit_f proc~e_excit_1_janev->proc~e_excit_f proc~e_excit_1_2_janev e_excit_1_2_janev proc~e_excit_1_janev->proc~e_excit_1_2_janev proc~e_excit_1_3_janev e_excit_1_3_janev proc~e_excit_1_janev->proc~e_excit_1_3_janev proc~e_excit_1_4_janev e_excit_1_4_janev proc~e_excit_1_janev->proc~e_excit_1_4_janev proc~e_excit_1_5_janev e_excit_1_5_janev proc~e_excit_1_janev->proc~e_excit_1_5_janev

Contents

Source Code

e_excit_n_m

Source Code

function e_excit_n_m(eb, n, m) result(sigma)
    !+Calculates an array of cross sections for a electron-Hydrogen impact excitation transition from
    !+the `n` \(\rightarrow\) `m` state at energy `eb`
    !+
    !+###Equation
    !+$$ e + H(n) \rightarrow e + H(m), m \gt n $$
    !+
    !+###References
    !+* Eq. 5 and Table 2 in Ref. 2 [[atomic_tables(module)]]
    !+* Eqs. 6-7 in Ref. 2 [[atomic_tables(module)]]
    !+* Section 2.1.1 B in Ref. 2 [[atomic_tables(module)]]
    !+
    real(Float64), intent(in)       :: eb
        !+ Collision energy [keV]
    integer, intent(in)             :: n
        !+ Initial atomic energy level/state
    integer, intent(in)       :: m
        !+ Final atomic energy level/state
    real(Float64)             :: sigma
        !+ Cross Section [\(cm^2\)]

    real(Float64), dimension(12) :: sigma_m

    sigma_m = e_excit_n(eb, n, 12)
    if(m.le.0) then
        sigma = sum(sigma_m)
    else
        sigma = sigma_m(m)
    endif

end function e_excit_n_m