An instrument combining an electrospray ionization source and a velocity-map imaging spectrometer for studying delayed electron emission of polyanions

2016 ◽  
Vol 87 (3) ◽  
pp. 033103 ◽  
Author(s):  
Bruno Concina ◽  
Evangelos Papalazarou ◽  
Marc Barbaire ◽  
Christian Clavier ◽  
Jacques Maurelli ◽  
...  
Keyword(s):  
Electrospray Ionization ◽  
Electron Emission ◽  
Velocity Map Imaging ◽  
Ionization Source ◽  
Imaging Spectrometer

Combined electrospray ionization source with a velocity map imaging spectrometer for studying large gas phase molecular ions

The Analyst ◽  
2012 ◽  
Vol 137 (15) ◽  
pp. 3496 ◽  
Author(s):  
E. Papalazarou ◽  
C. Cauchy ◽  
T. Barillot ◽  
B. Bellina ◽  
J. Maurelli ◽  
...  
Keyword(s):  
Electrospray Ionization ◽  
Gas Phase ◽  
Molecular Ions ◽  
Velocity Map Imaging ◽  
Ionization Source ◽  
Imaging Spectrometer

Unexpected cytosine–AuCl4− interaction under electrospray ionization mass spectrometry conditions—Formation of cytosine–Au(I) complexes

2019 ◽  
Vol 26 (3) ◽  
pp. 225-229
Author(s):  
Magdalena Frańska ◽  
Emilia Konował
Keyword(s):  
Electrospray Ionization ◽  
Gas Phase ◽  
Mass Spectra ◽  
Mass Spectrometric ◽  
Negative Ion ◽  
Ionization Mass ◽  
Ionization Source ◽  
Full Scan ◽  
Negative Ion Mode ◽  
Product Ion Spectra

The interaction of cytosine with AuCl4−, under electrospray ionization mass spectrometric conditions, is discussed. On the basis of respective full scan mass spectra and product ion spectra, obtained in positive and negative ion mode, it has been deduced that cytosine is very prone to form Au(I)-containing complexes. The complexes may be formed in the gas phase by decomposition of Au(III)-containing complexes and also in the electrospray ionization source as a result of the occurrence of redox process. It has also been found that the interaction of cytosine with Au+ is stronger than that with Cu+ or Ag+, although taking into account the electrostatic attraction, it is not expected.

scholarly journals Interference stabilization of autoionizing states in molecular N2 studied by time- and angular-resolved photoelectron spectroscopy

2016 ◽  
Vol 194 ◽  
pp. 509-524 ◽  
Author(s):  
Martin Eckstein ◽  
Nicola Mayer ◽  
Chung-Hsin Yang ◽  
Giuseppe Sansone ◽  
Marc J. J. Vrakking ◽  
...  
Keyword(s):  
Decay Rate ◽  
Photoelectron Spectroscopy ◽  
Rydberg States ◽  
Electronic States ◽  
The Other ◽  
Photoelectron Spectra ◽  
Angular Distributions ◽  
Velocity Map Imaging ◽  
Imaging Spectrometer ◽  
Exponential Decay Rate

An autoionizing resonance in molecular N2 is excited by an ultrashort XUV pulse and probed by a subsequent weak IR pulse, which ionizes the contributing Rydberg states. Time- and angular-resolved photoelectron spectra recorded with a velocity map imaging spectrometer reveal two electronic contributions with different angular distributions. One of them has an exponential decay rate of 20 ± 5 fs, while the other one is shorter than 10 fs. This observation is interpreted as a manifestation of interference stabilization involving the two overlapping discrete Rydberg states. A formalism of interference stabilization for molecular ionization is developed and applied to describe the autoionizing resonance. The results of calculations suggest, that the effect of the interference stabilization is facilitated by rotationally-induced couplings of electronic states with different symmetry.

scholarly journals Electrospray ionization source for collision experiments with keV-beams of biomolecular ions

2012 ◽  
Vol 388 (14) ◽  
pp. 142004
Author(s):  
J Werner ◽  
K J Müller ◽  
K Huber ◽  
A Müller ◽  
S Schippers
Keyword(s):  
Electrospray Ionization ◽  
Ionization Source ◽  
Biomolecular Ions
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