B5_cx_1_adas Function

  1. atomic_tables.f90
  2. atomic_tables
  3. B5_cx_1_adas

public function B5_cx_1_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_1_adas~~CalledByGraph proc~b5_cx_1_adas B5_cx_1_adas proc~aq_cx_n_adas Aq_cx_n_adas proc~aq_cx_n_adas->proc~b5_cx_1_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_1_adas

Source Code

function B5_cx_1_adas(eb) result(sigma)
    !+ Calculates the total charge exchange cross section for a Neutral Hydrogen atom
    !+in the \(n=1\) state colliding with a fully stripped Boron ion at energy `eb`
    !+
    !+###Equation
    !+$$ B^{5+} + H(1) \rightarrow B^{4+} + H^+ $$
    !+
    !+###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(7), parameter :: A = [ 1.174052518d3, -1.793561728d3, &
                                                    1.117522436d3, -3.679435571d2, &
                                                    6.750816878d1, -6.542029074d0, &
                                                    2.614113716d-1 ]
    real(Float64) :: e, l, p

    e = max(eb,1.0)*1.d3 !set lower limit to be 1keV
    l = log10(e)

    if(e.le.4.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
        sigma = 10.d0**p
    else
        sigma = 0.d0
    endif

end function B5_cx_1_adas