One-colour resonant two-photon ionization spectrum of the 1-fluoronaphthalene dimer and ab initio calculation

作     者：刘业超 张树东 张明霞 孙淼 孔祥和 

作者机构：Shandong Provincial Key Laboratory of Laser Polarization and Information TechnologyDepartment of PhysicsQufu Normal University 

出 版 物：《Chinese Physics B》 (中国物理B（英文版）)

年 卷 期：2009年第18卷第9期

页      面：3865-3869页

核心收录：

学科分类：07[理学] 070203[理学-原子与分子物理] 0702[理学-物理学] 

基　　金：supported by the Doctoral Special Fund of Qufu Normal University of China 

主　　题：1-fluoronaphthalene dimer one-colour resonant two-photon ionization spectrum 1FN dimer structure ab initio calculation time-dependent calculation 

摘      要：The one-colour resonant two-photon ionization （R2PI） spectrum of the 1-fluoronaphthalene （1FN） dimer has been studied in the wavelength range of 304 to 322 nm by using a supersonic molecular beam and time-of-flight mass spectrometry. Compared with the original band 00^0 （at 313.8 nm） of the S1 ← So transition of the 1FN monomer, a red-shifted band was observed in the 1FN dimer spectrum at about 315 nm with a relatively large linewidth, nearly 2 nm. Based on the consideration of inductive effect and ab initio calculations, this red-shifted band is assigned to the first electronic excited transition of the 1FN dimer. A possible geometric structure of the 1FN dimer is also obtained with calculations that the two 1FN molecules are combined through two hydrogen bonds which are formed between the hydrogen atom of a molecule and the fluorine atom of a neighbouring molecule. A time-dependent calculation was also carried out and the results are consistent with the experimental data.