p_cx_janev Function

  1. atomic_tables.f90
  2. atomic_tables
  3. p_cx_janev

public function p_cx_janev(Erel, n) result(sigma)

Calculates total cross section for proton-Hydrogen charge exchange interactions from the n state at energy Erel

Equation

References

Arguments

Type IntentOptional AttributesName
real(kind=Float64), intent(in) :: Erel

Relative collision energy [keV/amu]
integer, intent(in) :: n

Initial atomic energy level/state

Return Value real(kind=Float64)

Cross Section []


Calls

proc~~p_cx_janev~~CallsGraph proc~p_cx_janev p_cx_janev proc~p_cx_n_janev p_cx_n_janev proc~p_cx_janev->proc~p_cx_n_janev proc~p_cx_1_janev p_cx_1_janev proc~p_cx_janev->proc~p_cx_1_janev proc~p_cx_3_janev p_cx_3_janev proc~p_cx_janev->proc~p_cx_3_janev proc~p_cx_2_janev p_cx_2_janev proc~p_cx_janev->proc~p_cx_2_janev

Called by

proc~~p_cx_janev~~CalledByGraph proc~p_cx_janev p_cx_janev proc~p_cx_n p_cx_n proc~p_cx_n->proc~p_cx_janev proc~p_cx_2 p_cx_2 proc~p_cx_n->proc~p_cx_2 proc~p_cx_3 p_cx_3 proc~p_cx_n->proc~p_cx_3 proc~p_cx_1 p_cx_1 proc~p_cx_n->proc~p_cx_1 proc~p_cx_2->proc~p_cx_janev proc~p_cx_3->proc~p_cx_janev proc~p_cx_3->proc~p_cx_1 proc~p_cx_1->proc~p_cx_janev proc~p_cx p_cx proc~p_cx->proc~p_cx_n proc~p_cx_n_m p_cx_n_m proc~p_cx_n_m->proc~p_cx_n proc~write_bb_h_h write_bb_H_H proc~write_bb_h_h->proc~p_cx program~generate_tables generate_tables program~generate_tables->proc~write_bb_h_h

Contents

Source Code

p_cx_janev

Source Code

function p_cx_janev(Erel,n) result(sigma)
    !+Calculates total cross section for proton-Hydrogen charge exchange interactions from the `n` state at energy `Erel`
    !+
    !+###Equation
    !+ $$H^+ + H(n) \rightarrow H(m) + H^+$$
    !+###References
    !+* Eq. 44 and Table 9 in Ref. 2 [[atomic_tables(module)]]
    real(Float64), intent(in) :: Erel
        !+ Relative collision energy [keV/amu]
    integer, intent(in)       :: n
        !+ Initial atomic energy level/state
    real(Float64)             :: sigma
        !+ Cross Section [\(cm^2\)]

    integer :: i

    i = min(n,4)

    select case (i)
        case (0)
            stop
        case (1)
            sigma = p_cx_1_janev(Erel)
        case (2)
            sigma = p_cx_2_janev(Erel)
        case (3)
            sigma = p_cx_3_janev(Erel)
        case DEFAULT
            sigma = p_cx_n_janev(Erel, n)
    end select

end function p_cx_janev