Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Alexander A. Mommers"'
Publikováno v:
European Journal of Mass Spectrometry. 8:351-357
Neutralization-reionization mass spectrometry (NRMS) was applied to the generation and characterization of low-valence Sn(I) derivatives. The observation of recovery signals in the NR mass spectra of RSn+ ions (R=H, Cl, Br, CH3, C2H, C6H5) demonstrat
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 135:213-228
Experiments are reported in which radiative emissions from 8 keV N2·+ projectile ion—target gas (He, N2, O2 and CO2) collisions in the third field-free region of a modified VG ZAB-2F mass spectrometer (BEE geometry) were detected and analyzed usin
Publikováno v:
ChemInform. 23
Publikováno v:
Organic Mass Spectrometry. 27:537-539
Emission of radiation by collisionally activated ions: a new approach to ion structure determination
Publikováno v:
Journal of the American Chemical Society. 113:9405-9406
Publikováno v:
Organic Mass Spectrometry. 18:254-262
Methods are described for the unequivocal identification of the acetyl, [CH3 O] (a), 1-hydroxyvinyl, [CH2OH] (b), and oxiranyl, (d), cations. They involve the careful examination of metastable peak intensities and shapes and collision induced process
Autor:
John L. Holmes, Alexander A. Mommers, F. P. Lossing, Johan K. Terlouw, Peter C. Burgers, Frank R. Povel
Publikováno v:
Canadian Journal of Chemistry. 60:2246-2255
Ionic heats of formation and collisional activation (CA) mass spectra for fifteen isomeric or tautomeric [C4H4O]+• ions are described. Twelve of these species can be characterised by means of their CA mass spectra alone. The relative thermodynamic
Autor:
John C. Traeger, Alexander A. Mommers
Publikováno v:
Organic Mass Spectrometry. 22:592-596
An inexpensive data acquisition system has been developed for mass-analyzed kinetic energy experiments which involve scanning the electrostatic analyzer of a reversed geometry mass spectrometer. The various hardware and software design features are d
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 68:249-264
The neutralisation—reionisation mass spectra (NRMS) of a number of organic cations have been measured. Neutralisation was achieved by electron transfer from Xe atoms in the first of two collision cells in the second field-free region of a double fo
Publikováno v:
International Journal of Mass Spectrometry and Ion Processes. 54:283-288
The metastable loss of O from [COOH] + ions produces the formyl cation [HCO] + , whereas loss of O from [COOD] + yields [DCO] + and [COD] + . The energy partitioning for these reactions is explained in terms of transition state geometries.