The data file AMJUEL: Additional Atomic and Molecular ... - eirene

8 H.8 : Fits for ⟨σ · v · Ep⟩(Tb) [cm 3 /s · eV ]
Ep is a relevant energy related to the process, e.g. it may be the impacting electron or ion in eV,
or the radiation energy loss per reaction, etc. In the present section the energy weighted rate is
a function of temperature [eV] of the impacting electron or ion
8.1 Reaction 2.2.14 e + H + 2 (v) → H(1s) + H ∗ (n)(v = 0 − 9, n ≥ 2)
The energy weighting in this rate coefficient is done with the kinetic energy of impacting electron.
The general expression for this type of incident particle energy weighted rate, in which
the second particle is at rest, reads:
⟨σveEelec⟩(Te) = kTe · ⟨σve⟩ · (
)
d ln⟨σve⟩
3/2 + d ln(kTe)
The fit should result in
⟨σveEelec⟩(Te) ≈ 0.88 kTe ⟨σve⟩,
i.e. low energy electrons are preferred in this reaction, rather than the average electrons with
3/2 kTe
h0 -1.682072926000e+01 h1 3.964351525300e-01 h2 -2.501012514300e-11
h3 1.066503238000e-11 h4 2.724261514100e-12 h5 -2.120710160500e-12
h6 4.248055273200e-13 h7 -3.653955751100e-14 h8 1.187177640600e-15
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