Identify the dominant H− formation pathway by measuring branching ratios

Determine the branching ratio between O−H bond cleavage (producing H− + CH3CH2CH2O) and C−H bond cleavage (producing H− + C3H6OH) in dissociative electron attachment to 1-propanol to identify the dominant dissociation channel responsible for H− production.

Background

H− production in 1-propanol is attributed to two-body dissociation channels involving either O−H bond cleavage or C−H bond cleavage. The observed resonances (near 6.5, 8.7, and 10.9 eV) suggest multiple overlapping Feshbach resonances.

The authors note that although threshold calculations agree with their measurements, they lack information on the branching ratio between these channels and therefore cannot determine which pathway dominates.