正己烷中芘的双色双光子电离光谱

Laser Chemistry Pub Date : 1900-01-01 DOI:10.1155/1997/83972

K. Nakashima, Hirofumi Soga, T. Ogawa

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引用次数: 1

摘要

采用双色双光子电离技术研究了芘在非极性溶剂中的光电离过程。在总激发能为5.9 ~ 6.22 eV的氮气激光后，用染料激光延时照射20 ns，测量了正己烷中芘在阈值附近的电离光谱。芘的双光子电离阈值在5.9 eV附近，比单光子电离开始时的预期值大0.7 eV。电离谱在5.92和5.99 eV处显示最大值，这可能属于自电离过程。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Two-Color Two-Photon Ionization Spectrum of Pyrene in N-Hexane

The photoionization process of pyrene in non-polar solvent has been investigated using a two-color two-photon ionization technique. The ionization spectrum near threshold of pyrene in n-hexane was measured by a delayed irradiation of a dye laser 20 ns after an N2 laser at total excitation energies of 5.9–6.22 eV. The two-photon ionization threshold of pyrene was in the vicinity of 5.9 eV which is larger by 0.7 eV than that expected from the onset of one-photon ionization. The ionization spectrum shows maxima at 5.92 and 5.99 eV which may be assigned to an autoionization process.

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Laser Chemistry

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