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Citation: Zhang Li-Min, Chen Jun, Dai Jing-Hua, Wang Chu-Ji, Zhang Tao, Chen Cong-Xiang, Ma Xing-Xiao. The Multiphoton Dissociation and lonization of CS₂ in the Range 242-260nm[J]. Acta Physico-Chimica Sinica, ;1998, 14(11): 1007-1012. doi: 10.3866/PKU.WHXB19981109 shu

The Multiphoton Dissociation and lonization of CS₂ in the Range 242-260nm

1.
Laboratory for Bond-selective Chemistry,Academy Sinica;Departmetn of Chemical Physics,University of Science and Technology of China,Hefei 230026

Received Date: 12 January 1998
Available Online: 15 November 1998

The mass-selected excitation spectra for parent ion CS and the fragmentation ions CS+, S+ and C+ are obtained by using the resonance-enhanced multiphoton ionization (REMPI)of CS2 in the range 242 260nm. It is shown that the diffuse bands of CS in range of λ<246.4nm are mainly from the two-photon ionization of CS2. It has been reasonably assumed from the assignments of excitation spectra for the fragments that the neutral CS and S are produced by the photodissociation of CS2 in the process, that is, (1) the bands of CS+ are mainly due to the (1+1) resonance-enhanced ionization via the one-photon transition of the fragment CS, (2) besides part of S+ spectral peaks are from the dissociation of CS+, most of S+ spectral peaks are due to the (2+1) resonance-enhanced ionization via the two-photon transition 3p3 (2D0) 4p, 3p3 (4S0) np (n=6,7,8)←3p4 3PJ (J=2,1,0) of S atoms.
- CS2,
- Photodissociation,
- CS fragmentation,
- S atom
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The Multiphoton Dissociation and lonization of CS2 in the Range 242-260nm

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通讯作者: 陈斌, bchen63@163.com

The Multiphoton Dissociation and lonization of CS₂ in the Range 242-260nm