In this work we investigate the interaction of aniline in the gas phase with 50 fs pulses of radiation at a wavelength of 800 nm. Ion yields were measured using a reflectron time-of-flight mass spectrometer that avoids spatial averaging by collecting ion from a micrometer-sized volume within the focal region. This measuring technique allows for accurate measurements and quantification of relative ion yields at a well-defined intensity. Our results show the production of benzene C 6 H 6 ions from the interaction of aniline C 6 H 7 N with femtosecond radiation. Quantum chemical calculation reveal an unusual reaction pathway for this molecular rearrangement. Lastly metastable ions are observed in the spectrum and their precursors are investigated.

中文翻译：

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飞秒辐射中苯胺的分子重排

在这项工作中，我们研究了气相中苯胺与波长为800 nm的50 fs辐射脉冲的相互作用。使用反射式飞行时间质谱仪测量离子产率，该质谱仪通过从焦点区域内的微米大小的体积中收集离子来避免空间平均。这种测量技术可以在明确定义的强度下准确测量和定量相对离子产率。我们的结果表明，苯胺C 6 H 7 N与飞秒辐射的相互作用产生了苯C 6 H 6离子。量子化学计算揭示了这种分子重排的异常反应途径。最后，在光谱中观察到亚稳态离子，并对它们的前体进行了研究。