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Table B.1

continued.

Reaction Rate coefficient (cm3 s-1) T range Ref.

13...... H + H 2H + e k13 = 2.56 × 10-9 Te ≤ 0.04 eV 11
= exp[–20.372 608 965 333 24 Te> 0.04 eV
+ 1.139 449 335 841 631 ln Te
– 1.421 013 521 554 148 × 10-1 (ln Te)2
+ 8.464 455 386 63 × 10-3 (ln Te)3
– 1.432 764 121 299 2 × 10-3 (ln Te)4
+2.012 250 284 791 × 10-4 (ln Te)5
+ 8.663 963 243 09 × 10-5 (ln Te)6
– 2.585 009 680 264 × 10-5 (ln Te)7
+ 2.455 501 197 039 2 × 10-6 (ln Te)8
– 8.068 382 461 18 × 10-8 (ln Te)9]
14...... H + H+ 2H + γ k14 = 12
15...... H + H+ H + e k15 = 10-8 × T-0.4 13
16...... H + e 2H + γ k16 = 1.0 × 10-8 T ≤ 617 K 14
= 1.32 × 10-6T-0.76 T> 617 K
17...... H + H H + H2 k17 = 5.0 × 10-7 (102 × T)-0.5 15
18...... H2 + H 3H 16
19...... H2 + H2 H2 + H + H k19 = 5.996 × 10-30T4.1881(1 + 6.761 × 10-6T)-5.6881exp(−54 657.4 /T) 16
20...... He+ + H He + H+ k20 = 1.20 × 10-15(T/ 300)0.25 17
21...... He + H+ He+ + H k21 = 1.26 × 10-9T-0.75exp(−1.275 × 105/T) T ≤ 104 K 18
= 4 × 10-37T4.74 T> 104 K
22...... H2 + e H + H + e k22 = 4.38 × 10-10T0.35exp(−10 2000 /T) 19
23...... H2 + e H + H k23 = 35.5 × T-2.28exp(−46 707 /T) 20
24...... H2 + He H + H + He k24 = dex[−27.029 + 3.801log 10(T)−29 487 /T ] 21
25...... H2 + He+ He + H + H+ k25 = 3.7 × 10-14exp(35.0 /T) 22
26...... H2 + He+ H + He k26 = 7.2 × 10-15 22
27...... H + H H + H+ + e k27 = 1.2 × 10-17T1.2exp(−157 800 /T) 24
28...... H + He He + H+ + e k28 = 1.75 × 10-17T1.3exp(−157 800 /T) 24
29...... H+ + e H k29 = 1.225 × 10-13Z/Z [ 1.0 + 8.074 × 10-6ψ1.378 25
× (1 + 5.087 × 102T0.01586ψ− 0.4723−1.102 × 10-5ln(T) ] -1
30...... He+ + e He k30 = 5.572 × 10-14Z/Z [ 1.0 + 6.089 × 10-3ψ1.1728 25
× (1 + 4.331 × 102T0.04845ψ− 0.8120−1.333 × 10-4ln(T) ] -1
31...... H + H H2 see text 26

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