Electronic transition and cascading decay of CuO molecule in the wavelength region 430-550 nm investigated by laser-induced fluorescence spectroscopy

被引：3

作者：

Xiang, Qianlan ^{[1
,2
]}

Yang, Jie ^{[3
]}

Zhang, Shengli ^{[1
]}

Zhang, Jicai ^{[3
]}

Ma, Xinwen ^{[3
]}

机构：

[1] Xi An Jiao Tong Univ, Dept Appl Phys, Xian, Shaanxi, Peoples R China

[2] Xianyang Normal Univ, Sch Phys & Elect Engn, Xianyang, Peoples R China

[3] Chinese Acad Sci, Inst Modern Phys, Lanzhou, Gansu, Peoples R China

来源：

JOURNAL OF MOLECULAR SPECTROSCOPY | 2019年 / 362卷

基金：

中国国家自然科学基金;

关键词：

CuO; Electronic spectrum; Laser-induced fluorescence (LIF); Cascading process; ROTATIONAL ANALYSIS; A-STATE; SPECTRUM; BLUE; BAND;

D O I：

10.1016/j.jms.2019.05.010

中图分类号：

O64 [物理化学（理论化学）、化学物理学]; O56 [分子物理学、原子物理学];

学科分类号：

070203 ; 070304 ; 081704 ; 1406 ;

摘要：

The electronic spectrum of the copper monoxide molecule (CuO) was investigated in the range of 430-550 nm using laser induced fluorescence spectroscopy and single vibronic level emission spectra. The CuO molecule was produced by a supersonic jet-cooled discharge assisted laser ablation of Cu target. Twenty two vibronic bands were observed and assigned to the electronic transition progressions from the ground state X-2 Pi(i) to excited states C-2 Pi(3/2), C-2 Pi(1/2), D-2 Delta(5/2), E-2 Delta(5/2), F-2 Pi(3/2), G(2)Sigma, H-2 Pi(3/2), and I-2 Pi(3/2), of which ten bands were recorded firstly. The molecular constants of the excited electronic states for (CuO)-Cu-63 and (CuO)-Cu-65 isotopologues were obtained by a rotational analysis of the spectra. Cascading processes in the electronic excited states were found combining the time-resolved single vibronic level emission spectroscopy. The time-dependent radiative decay curves corresponding to different decay processes were recorded and analyzed. (C) 2019 Elsevier Inc. All rights reserved.

引用

页码：14 / 20

页数：7