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Intense laser-induced decomposition of mass-selected 2-, 3-, and 4-methylaniline cations

Itakura, Ryuji; Tanaka, Takatsugu*; Kuwata, Mikinori*; Suzuki, Hideaki*; Yamanouchi, Kaoru*

Photodecomposition processes of 2-, 3-, and 4-methylaniline cations induced by a moderately intense ($$sim$$ 10$$^{11}$$ W/cm$$^{2}$$) visible nanosecond laser field and an intense ($$sim$$ 10$$^{15}$$ W/cm$$^{2}$$) UV femtosecond laser field are investigated using a tandem mass spectrometer. Highly unsaturated fragment cations such as C$$_{6}$$H$$_{2}$$$$^{+}$$, C$$_{6}$$H$$_{3}$$$$^{+}$$ are dominantly produced by the nanosecond laser, while less unsaturated smaller fragment cations such as C$$_{3}$$H$$_{3}$$$$^{+}$$, C$$_{4}$$H$$_{4}$$$$^{+}$$, C$$_{5}$$H$$_{5}$$$$^{+}$$ are produced mainly by the femtosecond laser.

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Category:Chemistry, Physical

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