The role of power and magnetic connection to the active antenna in the suppression of intermittent structures by ion cyclotron resonance heating

This contribution is an attempt to reconstruct the favorable atmosphere that prevailed in Lau-sanne in 1986-87 and provided the backdrop of our invention of two-dimensional ion cyclotron resonance mass spectroscopy (2D ICR-MS). To avoid a self-centered histoire d’ancien combattant, we shall try to emphasize the context, the contributions of key players within our nascent research group at UNIL and the established group of Tino Gäumann at EPFL, the role of external speakers, and the open atmosphere that was not yet polluted by bibliometrics, obsessive concern with im-pact factors, and top-down management of research. We shall also explain why the idea of 2D ICR-MS has been ignored for many years and still has a limited impact: different scientific cul-tures in the ICR and NMR communities, different concerns with fundamental vs. applied research, different status of theory and numerical simulations, different levels of commitment of instrument manufacturers, not to mention many theoretical problems that appear to be at least as challenging in ICR as in NMR.

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Early Days of Two-Dimensional Ion Cyclotron Resonance

Molecules ◽

10.3390/molecules26113381 ◽

2021 ◽

Vol 26 (11) ◽

pp. 3381

Author(s):

Geoffrey Bodenhausen

Keyword(s):

Cyclotron Resonance ◽

Applied Research ◽

Impact Factors ◽

Ion Cyclotron Resonance ◽

Two Dimensional ◽

Top Down ◽

Key Players ◽

Ion Cyclotron ◽

Different Levels

This contribution is an attempt to evoke the favorable atmosphere that prevailed in Lausanne around 1986 and provided the backdrop of our invention of two-dimensional ion cyclotron resonance mass spectroscopy (2D ICR-MS). To avoid a self-centered histoire d’ancien combattant, we shall try to emphasize the context: the contributions of key players within our nascent research group at UNIL and the established group of Tino Gäumann at EPFL, the role of external speakers, and the open atmosphere that was not yet polluted by bibliometrics, obsessive concern with impact factors, and top–down management of research. We shall also explain why the idea of 2D ICR-MS has been ignored for many years and still has a limited impact: different scientific cultures in the ICR and NMR communities, different concerns with fundamental vs. applied research, different status of theory and numerical simulations, different levels of commitment of instrument manufacturers, not to mention many theoretical problems that appear to be at least as challenging in ICR as in NMR.

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The gas phase acidities of fluorinated acetones. An ion cyclotron resonance investigation of the role of fluorine substituents in the stabilization of planar carbanions

Canadian Journal of Chemistry ◽

10.1139/v80-371 ◽

1980 ◽

Vol 58 (22) ◽

pp. 2307-2311 ◽

Cited By ~ 11

Author(s):

R. Faird ◽

T. B. McMahon

Keyword(s):

Gas Phase ◽

Cyclotron Resonance ◽

Lone Pair ◽

Solution Phase ◽

Repulsive Interaction ◽

Ion Cyclotron Resonance ◽

Resonance Investigation ◽

Ion Cyclotron ◽

Lone Pair Electrons

The gas phase acidities of a series of fluorinated acetones and acetylfluoride have been determined. The results obtained are interpreted in terms of a model for fluorine substituents in planar carbanions in which fluorine exerts an overall stabilizing influence on enolate ions, but also has a component in the interaction which is destabilizing via a repulsive interaction between fluorine lone pair electrons and the carbanion centre. Comparisons with solution phase acidities are made and the validity of the model for fluorine substituents discussed.

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