Decay pathways of superexcited states of nitrous oxide

doi:10.1088/1674-1056/23/5/053403

Abstract The ionization and ionic dissociation of the superexcited state of N₂O are studied by using electron energy loss spectroscopy and positive ion time-of-flight mass spectroscopy at different momentum transfers; that is, 0 and 0.23 a.u. (atomic unit). The transitions at 13.8 eV and 14.0 eV are reassigned as 3pπ (000) and 3pσ (000) converging to A²Σ⁺, respectively. The competition between the main decay pathways of superexcited states at different momentum transfers is revealed. It is found that 3dσ converging to C²Σ⁺ mainly decays into N₂O⁺ while 4dσ can decay into both N₂O⁺ and NO⁺.

Keywords: ionization continuum superexcited states decay channel nitrous oxide

Received: 03 November 2013
Revised: 03 January 2014
Accepted manuscript online:

PACS:	34.80.Gs	(Molecular excitation and ionization)
	32.70.Cs	(Oscillator strengths, lifetimes, transition moments)
	33.80.Eh	(Autoionization, photoionization, and photodetachment)
	33.20.Ni	(Vacuum ultraviolet spectra)

Fund: Project supported by the National Natural Science Foundation of China (Grants Nos. U1332204, 11274291, and 11074299), the National Basic Research Program of China (Grant No. 2010CB923301), the Specialized Research Fund for the Doctoral Program of Higher Education of China, and the Fundamental Research Funds for the Central Universities of Ministry of Education of China.

Corresponding Authors: Zhu Lin-Fan
E-mail: lfzhu@ustc.edu.cn

About author: 34.80.Gs; 32.70.Cs; 33.80.Eh; 33.20.Ni

Cite this article:

Lin Mei (林梅), Liu Ya-Wei (刘亚伟), Zhong Zhi-Ping (钟志萍), Zhu Lin-Fan (朱林繁) Decay pathways of superexcited states of nitrous oxide 2014 Chin. Phys. B 23 053403

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Decay pathways of superexcited states of nitrous oxide

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