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Table 1

New or modified photodissociation processes included in the model (update of Hébrard et al. 2012).

Reaction Reaction Quantum yield q,
number dissociation limit (nm)

J1 C2H2 + hν → C2H + H 1.0, 215
J2 C3 + hν → C2 + C 1.0, 161
J3 c-C3H + hν → C3 + H 1.0, 359
J4 l-C3H + hν → C3 + H 1.0, 374
J5a c-C3H2 + hν → l-C3H + H 0.3, 266
J5b c-C3H2 + hν → c-C3H + H 0.3, 274
J5c c-C3H2 + hν → C3 + H2 0.4, 289
J6a l-C3H2 + hν → l-C3H + H 0.3, 308
J6b l-C3H2 + hν → c-C3H + H 0.3, 318
J6c l-C3H2 + hν → C3 + H2 0.4, 325
J7a t-C3H2 + hν → l-C3H + H 0.5, 298
J7b t-C3H2 + hν → c-C3H + H 0.5, 307
J8a C3H3 + hν → t-C3H2 + H 0.5, 292
J8b C3H3 + hν → c-C3H2 + H 0.5, 330
J9a CH2CCH2 + hν → C2H2 + 3CH2 0.2, 280
J9b CH2CCH2 + hν → C3H3 + H 0.7, 315
J9c CH2CCH2 + hν → l-C3H2 + H2 0.05, 326
J9d CH2CCH2 + hν → c-C3H2 + H2 0.05, 390
J10a CH3C2H + hν → C2H + CH3 0.07, 227
J10b CH3C2H + hν → C2H2 + 3CH2 0.03, 276
J10c CH3C2H + hν → C3H3 + H 0.80, 309
J10d CH3C2H + hν → l-C3H2 + H2 0.05, 320
J10e CH3C2H + hν → c-C3H2 + H2 0.05, 382
J11a C3H5 + hν → C2H2 + CH3 0.16, 450
J11b C3H5 + hν → CH2CCH2 + H 0.42, 505
J11c C3H5 + hν → CH3C2H + H 0.42, 518
J12a C3H6 + hν → CH2CCH2 + H + H 0.05, λ < 160
0.05, λ ∈ [160,197]
J12b C3H6 + hν → CH3C2H + H + H 0.05, λ < 160
0.05, λ ∈ [160,199]
J12c C3H6 + hν → C2H2 + CH3 + H 0.7, λ < 160
0.2, λ ∈ [160,209]
J12d C3H6 + hν → C3H3 + H2 + H 0.2, λ < 160
0.2, λ ∈ [160,222]
J12e C3H6 + hν → C2H3 + CH3 0.0, λ < 160
0.3, λ ∈ [160,281]
J12f C3H6 + hν → C3H5 + H 0.0, λ < 160
0.2, λ ∈ [160,324]
J13 C3H7 + hν → C3H6 + H 1.0 , 867
J14a HC3N + hν → CN + C2H 0.3, 185
J14b HC3N + hν → HCN + C2 0.1, 193
J14c HC3N + hν → C3N + H 0.3, 220

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