Photoelectron Imaging Spectroscopy of S1(1B2u 蟺,蟺*) Benzene via 611n (n = 0鈭?) Levels

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• 作者：Dongmei Niu ; Yoshihiro Ogi ; Yoshi-Ichi Suzuki ; Toshinori Suzuki
• 刊名：Journal of Physical Chemistry A
• 出版年：2011
• 出版时间：March 24, 2011
• 年：2011
• 卷：115
• 期：11
• 页码：2096-2102
• 全文大小：955K
• 年卷期：v.115,no.11(March 24, 2011)
• ISSN：1520-5215

文摘

We report resonance-enhanced two-photon ionization photo-electron spectroscopy of jet-cooled benzene via the 6¹1ⁿ (n = 0鈭?) vibronic levels in S₁(¹B_2u 蟺,蟺*) using a nanosecond UV laser and photoelectron imaging. The best energy resolution (螖E/E) was 0.7%. The photoelectron spectrum from the S₁ 6¹1³ level (E_vib = 3284 cm^鈭?) in the channel three region exhibited a clear signature of intramolecular vibrational redistribution (IVR). The spectral features were consistent with picosecond zero kinetic energy photoelectron (ZEKE) spectra reported by Smith et al. [ J. Phys. Chem. 1995, 99, 1768]. The photoelectron angular anisotropy parameter 尾₂ was found to be negative in ionization from the 6¹1ⁿ (n = 0鈭?) levels with photoelectron kinetic energies up to 5000 cm^鈭?. No influence of a shape resonance was identified.