Line Plot from Scientific Research

Action spectra of HCHO via the 2 1 4 1 and 2 1 4 3 levels as a function of added O 2 at 50 torr total pressure (balance helium). HO 2 formed from PPO (2 1 4 1 level) shows a strong, linear O 2 pressure dependence. HO 2 formed from PCO (2 1 4 3 ) is almost pressure independent (see text).

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