DataSet D107504

\[\mathrm{H}^{+} + \mathrm{Li} \; 4s \rightarrow \mathrm{Li}^{+}\]

Process HCX: Charge Transfer, HIN: Ionization, COM: Composite Process with Multiple Channels
Channel
  • H+ + Li 4s → Li+ + H
  • H+ + Li 4s → Li+ + H+ + e-
Data type cross section | uploaded on 2022-11-11
Comment Using AOCC64_65 to compute cross-section data. Fit function in equation (4s) from Schweinzer et al.
MethodAOCC: Atomic‐orbital close‐coupling
FrameTarget
Columns
  1. E /eV u-1
  2. sigma /cm2
Uncertainty15 %
Ref
  • B19: J. Schweinzer, R. Brandenburg, I. Bray, R. Hoekstra, F. Aumayr, R. K. Janev, H. P. Winter, "Database for inelastic collisions of lithium atoms with electrons, protons, and multiply charged ions", Atomic Data and Nuclear Data Tables 72, 239-273 (1999). [10.1006/adnd.1999.0815]
DataDownload (data from fit)

Fitted Data

Fit Function
Details		 \[\sigma_{H^+}^{TEL, \;Li(l>0)}\big(E\big) = 10^{-14}A_1 \Big(1- \big(e + A_3E\big)^{-A_2/E}\Big)\]
Python 
def li_hel_nl_schweinz(E, A1, A2, A3):
    """
    This function calculates proton impact ionization cross sections (in cm2)
    from l>0 states of Li.
    param E: requested proton-impact energy in keV/u
    type E: float, np.ndarray
    param Ai: fit coefficient 
    type Ai: float
    """

    sigma = 1e-14*A1*(1 - (np.exp(1) + A3*E)**(-A2/E))
    return sigma
Fit Precision2.0 %
Fit Coefficients 
A1
 1.624e+01
A2
 1.196e+00
A3
 1.652e-03
x-range –