Dissociation of methanol in intense femtosecond laser field
Tang, XP; Gao, LR; Wang, YL; Wang, C; Wang, SF; Kong, FA
AbstractMethanol was irradiated by 80 fs laser pulse, intensity range of 10(13)-10(1)4 W/cm(2). A TOF-mass spectrometer was coupled to the laser system and used to detect the ions produced. The parent ions CH3OH+ appeared firstly at the laser intensity of 1.4 X 10(13) W/cm(2). While the laser intensity was,,gradually increased, the parent ions were dissociated and the primary ions CH2OH+ were given as verified from the irradiation of deuterated methanol (CH3OD)) showing the C-H bond cracking firstly. While the laser intensity was further. increased to 2.0 X 10(13) W/cm(2), the C-O bonds of the parent ions also broke to give CH3+. When the laser intensity was higher, smaller fragment ions like CH+, C+ OH+ and O+ also appeared. Among the fragment ions, only H+ ion yield had anisotropic angular distribution dependence on the laser polarization vector in the dissociation of methanol. All the experimental observations show that the dissociation of methanol proceeds through stepwise mechanism but not Coulomb explosion.
KeywordIntense Laser Field Femtosecond Laser Dissociation Methanol Tof-mass Spectra
Indexed BySCI
WOS IDWOS:000179588600007
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorKong, FA
AffiliationChinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Tang, XP,Gao, LR,Wang, YL,et al. Dissociation of methanol in intense femtosecond laser field[J]. CHINESE SCIENCE BULLETIN,2002,47(23):1973-1978.
APA Tang, XP,Gao, LR,Wang, YL,Wang, C,Wang, SF,&Kong, FA.(2002).Dissociation of methanol in intense femtosecond laser field.CHINESE SCIENCE BULLETIN,47(23),1973-1978.
MLA Tang, XP,et al."Dissociation of methanol in intense femtosecond laser field".CHINESE SCIENCE BULLETIN 47.23(2002):1973-1978.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Tang, XP]'s Articles
[Gao, LR]'s Articles
[Wang, YL]'s Articles
Baidu academic
Similar articles in Baidu academic
[Tang, XP]'s Articles
[Gao, LR]'s Articles
[Wang, YL]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Tang, XP]'s Articles
[Gao, LR]'s Articles
[Wang, YL]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.