Femtosecond Laser Photoionization Mass Spectrometry of Molecules on Surfaces

Author(s):  
S. V. Chekalin ◽  
V. V. Golovlev ◽  
A. A. Kozlov ◽  
V. S. Letokhov ◽  
Y. A. Matveetz ◽  
...  
1988 ◽  
Vol 92 (24) ◽  
pp. 6855-6858 ◽  
Author(s):  
S. V. Chekalin ◽  
V. V. Golovlev ◽  
A. A. Kozlov ◽  
Yu. A. Matveets ◽  
A. P. Yartsev ◽  
...  

1993 ◽  
Vol 47 (11) ◽  
pp. 1739-1741 ◽  
Author(s):  
Michael C. Zumwalt ◽  
M. Bonner Denton

A time-of-flight mass spectrum of the C60 and C70 fullerenes with the use of a vacuum ultraviolet H2 laser photoionization source is presented. The photon energy is 7.8 eV, approximately 0.2 eV above the reported ion thresholds of both molecules. This relatively low excess energy is believed to be insufficient for fragmentation, as demonstrated by production of only parent ions.


2020 ◽  
Vol 34 (10) ◽  
pp. 12678-12687 ◽  
Author(s):  
Ke Yang ◽  
Jiahao Wang ◽  
Jiahui Huang ◽  
Jiuzhong Yang ◽  
Yang Pan ◽  
...  

2015 ◽  
Vol 29 (5) ◽  
pp. 424-430 ◽  
Author(s):  
Anu Vaikkinen ◽  
Henning S. Schmidt ◽  
Iiro Kiiski ◽  
Sari Rämö ◽  
Kati Hakala ◽  
...  

2000 ◽  
Vol 6 (1) ◽  
pp. 53-64 ◽  
Author(s):  
V.V. Takhistov ◽  
I.N. Domnin ◽  
D.A. Ponomarev

Ionization and appearance energies of some fragment ions from 1,2,3-trimethy1-3-phenyl-, 3-methyl-1,2,3-triphenyl-, 1,2-diphenyl-3-methoxycarbonyl-, 1,2,3-triphenyl-3-methoxycarbonyl- and 1,3,3-triphenyl-2-methoxycarbonyl-cyclopropenes were measured by photoionization mass spectrometry. It was shown that in none of these compounds did the fragment ions possess the expected stable substituted cyclopropenium ion structure. Accordingly, possible schemes of molecular ion isomerization are given. The enthalpies of formation of nearly 50 substituted cyclopropenium ions, and ions of related structure, were estimated using series of isodesmic reactions. This publication, together with the previous works of the authors in this Journal, demonstrates the general methodology for estimation of the enthalpy of formation for even-electron ions. It is suggested that the present methodology can provide a good alternative to other estimation or computation procedures applied to the thermochemistry of ions.


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