B5_cx_2_adas Function

  1. atomic_tables.f90
  2. atomic_tables
  3. B5_cx_2_adas

public function B5_cx_2_adas(eb) result(sigma)

Calculates the total charge exchange cross section for a Neutral Hydrogen atom in the state colliding with a fully stripped Boron ion at energy eb

Equation

References

Arguments

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

Relative collision energy [keV/amu]

Return Value real(kind=Float64)

Cross Section []


Called by

proc~~b5_cx_2_adas~~CalledByGraph proc~b5_cx_2_adas B5_cx_2_adas proc~aq_cx_n_adas Aq_cx_n_adas proc~aq_cx_n_adas->proc~b5_cx_2_adas proc~aq_cx_n Aq_cx_n proc~aq_cx_n->proc~aq_cx_n_adas proc~aq_cx Aq_cx proc~aq_cx->proc~aq_cx_n proc~write_bb_h_aq write_bb_H_Aq proc~write_bb_h_aq->proc~aq_cx program~generate_tables generate_tables program~generate_tables->proc~write_bb_h_aq

Contents

Source Code

B5_cx_2_adas

Source Code

function B5_cx_2_adas(eb) result(sigma)
    !+ Calculates the total charge exchange cross section for a Neutral Hydrogen atom
    !+in the \(n=2\) state colliding with a fully stripped Boron ion at energy `eb`
    !+
    !+###Equation
    !+$$ B^{5+} + H(2) \rightarrow B^{4+} + H^+ $$
    !+
    !+###References
    !+* Ref. 4 [[atomic_tables(module)]]
    real(Float64), intent(in) :: eb
        !+ Relative collision energy [keV/amu]
    real(Float64)             :: sigma
        !+ Cross Section [\(cm^2\)]

    real(Float64), dimension(10), parameter :: A = [6.603246818d1, -3.072575676d2, &
                                                    5.030801019d2, -4.585636345d2, &
                                                    2.568666393d2, -9.185150382d1, &
                                                    2.100012584d1, -2.964174788d0, &
                                                    2.346396110d-1, -7.943766873d-3]
    real(Float64) :: e, l, p

    e = max(eb*1.d3,10.0)
    l = log10(e)

    if(e.le.1.d5) then
        p = A(1) + A(2)*l + A(3)*l**2 + A(4)*l**3 + &
            A(5)*l**4 + A(6)*l**5 + A(7)*l**6 +     &
            A(8)*l**7 + A(9)*l**8 + A(10)*l**9
        sigma = 10.d0**p
    else
        sigma = 0.d0
    endif

end function B5_cx_2_adas