Lifetimes (in yrs) Photo dissociation t PD = 10 3 AB + h  A + B 2-body collisions t 2B = 10 3 /n A + B  AB*  A + B Radiative association t RA = 10 9.

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Presentation transcript:

Lifetimes (in yrs) Photo dissociation t PD = 10 3 AB + h  A + B 2-body collisions t 2B = 10 3 /n A + B  AB*  A + B Radiative association t RA = 10 9 /n yrs A + B  AB*  AB + h Grain sticking t GS = 10 9 /n yrs A + B + Gr  AB + Gr 3 - body collision t 3B = / n 2 A + B + M  MAB  AB + M t (BIG U) = yrs n number of atoms or molecules per cm 3 Harry Kroto 2004

Lifetimes (in yrs) Photo dissociation t PD = 10 3 AB + h  A + B 2-body collisions t 2B = 10 3 /n A + B  AB*  A + B Radiative association t RA = 10 9 /n yrs A + B  AB*  AB + h Grain sticking t GS = 10 9 /n yrs A + B + Gr  AB + Gr 3 - body collision t 3B = / n 2 A + B + M  MAB  AB + M t (BIG U) = yrs n number of atoms or molecules per cm 3 Harry Kroto 2004

Lifetimes (in yrs) Photo dissociation t PD = 10 3 AB + h  A + B 2-body collisions t 2B = 10 3 /n A + B  AB*  A + B Radiative association t RA = 10 9 /n yrs A + B  AB*  AB + h Grain sticking t GS = 10 9 /n yrs A + B + Gr  AB + Gr 3 - body collision t 3B = / n 2 A + B + M  MAB  AB + M t (BIG U) = yrs n number of atoms or molecules per cm 3 Harry Kroto 2004

Lifetimes (in yrs) Photo dissociation t PD = 10 3 AB + h  A + B 2-body collisions t 2B = 10 3 /n A + B  AB*  A + B Radiative association t RA = 10 9 /n yrs A + B  AB*  AB + h Grain sticking t GS = 10 9 /n yrs A + B + Gr  AB + Gr 3 - body collision t 3B = / n 2 A + B + M  MAB  AB + M t (BIG U) = yrs n number of atoms or molecules per cm 3 Harry Kroto 2004

Lifetimes (in yrs) Photo dissociation t PD = 10 3 AB + h  A + B 2-body collisions t 2B = 10 3 /n A + B  AB*  A + B Radiative association t RA = 10 9 /n yrs A + B  AB*  AB + h Grain sticking t GS = 10 9 /n yrs A + B + Gr  AB + Gr 3 - body collision t 3B = / n 2 A + B + M  MAB  AB + M t (BIG U) = yrs n number of atoms or molecules per cm 3 Harry Kroto 2004

Lifetimes (in yrs) Photo dissociation t PD = 10 3 AB + h  A + B 2-body collisions t 2B = 10 3 /n A + B  AB*  A + B Radiative association t RA = 10 9 /n yrs A + B  AB*  AB + h Grain catalysis t GC = 10 9 /n yrs A + B + Gr  AB + Gr 3 - body collision t 3B = / n 2 A + B + M  MAB  AB + M t (BIG U) = yrs n number of atoms or molecules per cm 3 Harry Kroto 2004

Lifetimes (in yrs) Photo dissociation t PD = 10 3 AB + h  A + B 2-body collisions t 2B = 10 3 /n A + B  AB*  A + B Radiative association t RA = 10 9 /n yrs A + B  AB*  AB + h Grain sticking t GS = 10 9 /n yrs A + B + Gr  AB + Gr 3 - body collision t 3B = / n 2 A + B + M  MAB  AB + M t (BIG U) = yrs n number of atoms or molecules per cm 3 Harry Kroto 2004