What question did this study set out to answer?

Investigate discrepancies in product branching fractions of C2H4 generated via photoexcitation and chemical activation.

March 29, 2026The Journal of Physical Chemistry A

On Discrepancy in Product Branching from Photoexcited and Chemically Activated C ₂ H ₄

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Investigate discrepancies in product branching fractions of C2H4 generated via photoexcitation and chemical activation.
Performed classical trajectory calculations on the potential energy surface for excited C2H4
Conducted shock tube experiments to measure H atom concentration profiles
Analyzed the H atom production from the CH2 + CH2 reaction with thermal decomposition of CH2I2
Calculated branching fractions for H atom production were 0.6-0.7, aligning with photodissociation predictions
Shock tube experiments found rate constant k = (1.57 ± 0.39) × 10^-10 cm^3 molecule^-1 s^-1
Determined branching fraction φb for C2H3 + H channel was 0.15 ± 0.03, smaller than predicted values

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Implication

Classical trajectory calculations reveal discrepancies in product branching for ethylene generated by different methods, suggesting further investigation is needed.

Cite This Study

Matsugi et al. (2026) studied this question.

synapsesocial.com/papers/69c8c1d7de0f0f753b39bfee https://doi.org/10.1021/acs.jpca.6c00957

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Implication

Classical trajectory calculations reveal discrepancies in product branching for ethylene generated by different methods, suggesting further investigation is needed.

On Discrepancy in Product Branching from Photoexcited and Chemically Activated C ₂ H ₄

Key Points

Discussion

Implication

Cite This Study

On Discrepancy in Product Branching from Photoexcited and Chemically Activated C ₂ H ₄

Key Points

Discussion

Implication

Cite This Study

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