A supersonic beam ion cyclotron resonance instrument for the study of van der Waals cluster ions

1991 ◽  
pp. 883-885
Author(s):  
M. Bamberg ◽  
K. P. Wanczek
Keyword(s):  
Cyclotron Resonance ◽  
Van Der Waals ◽  
Cluster Ions ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron ◽  
Van Der Waals Cluster

Unintended Parametric Ejection of Ions from an Ion Cyclotron Resonance Trap by Two-Electrode Axialization

2009 ◽  
Vol 15 (2) ◽  
pp. 283-291 ◽  
Author(s):  
Franklin Martinez ◽  
Alexander Herlert ◽  
Gerrit Marx ◽  
Lutz Schweikhard ◽  
Noelle Walsh
Keyword(s):  
Cyclotron Resonance ◽  
Single Phase ◽  
Cluster Ions ◽  
Ion Cyclotron Resonance ◽  
Buffer Gas ◽  
Vector Representation ◽  
Quadrupolar Excitation ◽  
Resonance Effects ◽  
Parametric Resonances ◽  
Ion Cyclotron

Azimuthal quadrupolar excitation is a commonly used technique in the field of ion cyclotron resonance mass spectrometry, in particular in combination with buffer-gas collisions to achieve axialization of the stored ions. If the quadrupolar excitation is applied with only one phase to a set of two opposing ring segments (rather than the “regular” method where two sets of electrodes are addressed with opposite polarities), parametric resonance effects at the frequencies 2μ z and μp = μ+ – μ– can lead to unintended ejection of ions from the trap. These parametric resonances have been revisited both theoretically and experimentally: multipole components of different azimuthal excitation schemes are derived by a simple vector representation of the excitation signal applied to the ring segments. Thus, parametric contributions can be easily identified, as demonstrated for the two-electrode and the four-electrode quadrupolar excitation schemes as well as further examples. In addition, the effect of the single-phase two-electrode quadrupolar excitation is demonstrated for storage and axialization of cluster ions.

Atomic Clusters and Ion Cyclotron Resonance Mass Spectrometry: A Fruitful Combination

2005 ◽  
Vol 11 (5) ◽  
pp. 457-468 ◽  
Author(s):  
Lutz Schweikhard ◽  
Klaus Blaum ◽  
Alexander Herlert ◽  
Gerrit Marxa
Keyword(s):  
Cyclotron Resonance ◽  
Penning Trap ◽  
Ion Trap ◽  
Cluster Ions ◽  
General Interest ◽  
Ion Cyclotron Resonance ◽  
Mass Spectrometers ◽  
Research Areas ◽  
Ion Cyclotron ◽  
Cluster Properties

Clusters consisting of a few atoms build the bridge between individual atoms and the condensed phase of matter and they are, thus, of great general interest. Over the last two decades, considerable progress has been made in the study of their properties and ion storage techniques, in particular the use of ion cyclotron resonance (Penning) traps, are important tools for advanced investigations. Vice versa, cluster ions can serve as probes for the evaluation of ion-trap properties. Furthermore, they are ideally suited for the calibration of mass spectrometers and for consistency checks in high-accuracy mass determinations. Examples from the research areas mentioned, i.e. the investigation of cluster properties and the application of cluster ions for Penning-trap studies and mass calibration, are reported.

Fourier transform ion cyclotron resonance mass spectrometry of trapped carbon cluster ions

1986 ◽  
Vol 129 (4) ◽  
pp. 331-335 ◽  
Author(s):  
R.D. Knight ◽  
R.A. Walch ◽  
Stephen C. Foster ◽  
Terry A. Miller ◽  
Steven L. Mullen ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Fourier Transform ◽  
Cyclotron Resonance ◽  
Carbon Cluster ◽  
Cluster Ions ◽  
Ion Cyclotron Resonance ◽  
Ion Cyclotron
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