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Table 2

Photodissociated molecules, absorbed photons, and photodissociation yield (in molecules per absorbed photon) at each irradiation interval for methanol and fully deuterated methanol at 8 K (experiments 1 and 7 in Table 1).

Irrad. Photodiss. Absorbed Photodiss.
time molecules photons yield
min. [× 1016 molec./cm2] [× 1016 phot./cm2] [molec./abs. phot.]

CH3OH
5 2.8 5.3 0.5
10 3.0 10.4 0.3
15 2.4 16.1 0.2
30 2.1 32.8 0.06
60 1.5 67.5 0.02
120 0.3 136.1 0.002

CD3OD
5 4.3 4.9 0.8
10 3.8 10.1 0.4
15 2.7 15.9 0.2
30 1.6 33.4 0.05
60 1.2 68.1 0.02
120 0.4 135.4 0.003

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