Ion traps and Piero Traldi: A brief appreciation

2021 ◽  
Author(s):  
R. Graham Cooks
Keyword(s):  
Ion Traps

Numerical analysis of trajectories in a Cassinian ion trap of second order with trap door ion inlet

2021 ◽  
Vol 27 (1) ◽  
pp. 3-12
Author(s):  
Bjoern Raupers ◽  
Hana Medhat ◽  
Juergen Grotemeyer ◽  
Frank Gunzer
Keyword(s):  
Ion Trap ◽  
Ion Traps ◽  
Second Order ◽  
Resolving Power ◽  
Periodic Pattern ◽  
Ion Motion ◽  
Trap Door ◽  
Mass Resolving Power ◽  
Long Time ◽  
The Fourier Transform

Ion traps like the Orbitrap are well known mass analyzers with very high resolving power. This resolving power is achieved with help of ions orbiting around an inner electrode for long time, in general up to a few seconds, since the mass signal is obtained by calculating the Fourier Transform of the induced signal caused by the ion motion. A similar principle is applied in the Cassinian Ion Trap of second order, where the ions move in a periodic pattern in-between two inner electrodes. The Cassinian ion trap has the potential to offer mass resolving power comparable to the Orbitrap with advantages regarding the experimental implementation. In this paper we have investigated the details of the ion motion analyzing experimental data and the results of different numerical methods, with focus on increasing the resolving power by increasing the oscillation frequency for ions in a high field ion trap. In this context the influence of the trap door, a tunnel through which the ions are injected into the trap, on the ion velocity becomes especially important.

scholarly journals Fast gates for ion traps by splitting laser pulses

2013 ◽  
Vol 15 (4) ◽  
pp. 043006 ◽  
Author(s):  
C D B Bentley ◽  
A R R Carvalho ◽  
D Kielpinski ◽  
J J Hope
Keyword(s):  
Laser Pulses ◽  
Ion Traps

Laser Driven Ion Traps: Beyond the Standard Perturbative Limit

2004 ◽  
Vol 20 (1-2) ◽  
pp. 129-132
Author(s):  
P. Aniello ◽  
V.I. Man'ko ◽  
G. Marmo ◽  
A. Porzio ◽  
F. Zaccaria ◽  
...  
Keyword(s):  
Ion Traps ◽  
Perturbative Limit

scholarly journals Space-charge effects in Penning ion traps

2015 ◽  
Vol 785 ◽  
pp. 153-162 ◽  
Author(s):  
T. Porobić ◽  
M. Beck ◽  
M. Breitenfeldt ◽  
C. Couratin ◽  
P. Finlay ◽  
...  
Keyword(s):  
Space Charge ◽  
Ion Traps ◽  
Space Charge Effects ◽  
Charge Effects

scholarly journals Time-Rescaling of Dirac Dynamics: Shortcuts to Adiabaticity in Ion Traps and Weyl Semimetals

Entropy ◽  
2021 ◽  
Vol 23 (1) ◽  
pp. 81
Author(s):  
Agniva Roychowdhury ◽  
Sebastian Deffner
Keyword(s):  
Time Dependence ◽  
Unitary Transformation ◽  
Ion Traps ◽  
Time Frame ◽  
Effective Potentials ◽  
Shortcuts To Adiabaticity ◽  
Weyl Semimetals ◽  
Adiabatic Dynamics

Only very recently, rescaling time has been recognized as a way to achieve adiabatic dynamics in fast processes. The advantage of time-rescaling over other shortcuts to adiabaticity is that it does not depend on the eigenspectrum and eigenstates of the Hamiltonian. However, time-rescaling requires that the original dynamics are adiabatic, and in the rescaled time frame, the Hamiltonian exhibits non-trivial time-dependence. In this work, we show how time-rescaling can be applied to Dirac dynamics, and we show that all time-dependence can be absorbed into the effective potentials through a judiciously chosen unitary transformation. This is demonstrated for two experimentally relevant scenarios, namely for ion traps and adiabatic creation of Weyl points.

Studies of Ion Collisions in Ion Traps

1988 ◽  
Vol T22 ◽  
pp. 164-170 ◽  
Author(s):  
D A Church
Keyword(s):  
Ion Traps ◽  
Ion Collisions

Demystifying the Diffuse Vibrational Spectrum of Aqueous Protons Through Cold Cluster Spectroscopy

2021 ◽  
Vol 72 (1) ◽  
Author(s):  
Helen J. Zeng ◽  
Mark A. Johnson
Keyword(s):  
Double Resonance ◽  
Ion Traps ◽  
Cryogenic Cooling ◽  
Annual Review ◽  
Resonance Spectroscopy ◽  
Publication Date ◽  
Relaxation Dynamics ◽  
Acid Dissolution ◽  
Complex Species ◽  
Charge Translocation

The ease with which the pH is routinely determined for aqueous solutions masks the fact that the cationic product of Arrhenius acid dissolution, the hydrated proton, or H+(aq), is a remarkably complex species. Here, we review how results obtained over the past 30 years in the study of H+⋅(H2O) n cluster ions isolated in the gas phase shed light on the chemical nature of H+(aq). This effort has also revealed molecular-level aspects of the Grotthuss relay mechanism for positive-charge translocation in water. Recently developed methods involving cryogenic cooling in radiofrequency ion traps and the application of two-color, infrared–infrared (IR–IR) double-resonance spectroscopy have established a clear picture of how local hydrogen-bond topology drives the diverse spectral signatures of the excess proton. This information now enables a new generation of cluster studies designed to unravel the microscopic mechanics underlying the ultrafast relaxation dynamics displayed by H+(aq). Expected final online publication date for the Annual Review of Physical Chemistry, Volume 72 is April 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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