Origin and manifestation of the anharmonic potential felt by an ion-cloud in an actual Paul trap

1996 ◽  
Vol 62 (4) ◽  
pp. 421-426 ◽  
Author(s):  
X. Luo ◽  
X. Zhu ◽  
K. Gao ◽  
J. Li ◽  
M. Yan ◽  
...  
Keyword(s):  
Paul Trap ◽  
Anharmonic Potential ◽  
Ion Cloud

Misphasing of Ion Motion in Quadratic Potential Induced by Space-Periodic Disturbance

2008 ◽  
Vol 14 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Ivan A. Boldin ◽  
Eugene N. Nikolaev
Keyword(s):  
Quadratic Field ◽  
Paul Trap ◽  
Computation Method ◽  
Mass Analyzer ◽  
Quadratic Potential ◽  
Ion Motion ◽  
Periodic Disturbance ◽  
Weak Space ◽  
Different Types ◽  
Ion Cloud

An ideally quadratic potential used in different types of ion mass analyzer such as Paul trap, Kingdon trap and quadratic field reflectron may be space-periodically disturbed due to inaccuracy of fabrication and design features. If ion motion in such devices is computer-simulated, disturbances of potential may be caused by the peculiarity of the computation method. The problem investigated in this work is the effect that weak space-periodic disturbance of a quadratic potential takes on the ion motion in such a potential. The effect of the disturbance we considered is the misphasing of an ion cloud oscillating in a disturbed quadratic potential. A method to evaluate the characteristic misphasing time is presented. For the case of disturbance amplitude being constant along ion trajectories, the designated problem may be considered analytically. If the disturbance amplitude depends on oscillation co-ordinate, the result can be obtained by use of numerical integration. An example of numerical calculation is presented.

Fractional frequency collective parametric resonances of an ion cloud in a Paul trap

1998 ◽  
Vol 58 (1) ◽  
pp. R34-R37 ◽  
Author(s):  
M. A. N. Razvi ◽  
X. Z. Chu ◽  
R. Alheit ◽  
G. Werth ◽  
R. Blümel
Keyword(s):  
Paul Trap ◽  
Fractional Frequency ◽  
Parametric Resonances ◽  
Ion Cloud

Nonlinear collective oscillations of an ion cloud in a Paul trap

1997 ◽  
Vol 56 (5) ◽  
pp. 4023-4031 ◽  
Author(s):  
R. Alheit ◽  
X. Z. Chu ◽  
M. Hoefer ◽  
M. Holzki ◽  
G. Werth ◽  
...  
Keyword(s):  
Paul Trap ◽  
Ion Cloud ◽  
Collective Oscillations

scholarly journals Energy-level structure of ion cloud and crystal in a linear Paul trap

2014 ◽  
Vol 16 (8) ◽  
pp. 083041
Author(s):  
Wei Wen ◽  
Wei Wu ◽  
Yan-Li Zhou ◽  
Bao-Quan Ou ◽  
Ping-Xing Chen
Keyword(s):  
Energy Level ◽  
Level Structure ◽  
Paul Trap ◽  
Linear Paul Trap ◽  
Energy Level Structure ◽  
Ion Cloud

Observation of high-order motional resonances of an ion cloud in a Paul trap

1998 ◽  
Vol 173 (1-2) ◽  
pp. 107-112 ◽  
Author(s):  
X.Z. Chu ◽  
M. Holzki ◽  
R. Alheit ◽  
G. Weitha
Keyword(s):  
Paul Trap ◽  
High Order ◽  
Ion Cloud

scholarly journals Space charge and collective oscillation of ion cloud in a linear Paul trap

2014 ◽  
Vol 364 ◽  
pp. 16-20 ◽  
Author(s):  
P. Mandal ◽  
S. Das ◽  
D. De Munshi ◽  
T. Dutta ◽  
M. Mukherjee
Keyword(s):  
Space Charge ◽  
Paul Trap ◽  
Collective Oscillation ◽  
Linear Paul Trap ◽  
Ion Cloud

A simulation study of excitation contour of a linear trap with spatial harmonics

2021 ◽  
pp. 146906672110201
Author(s):  
NV Konenkov
Keyword(s):  
Ion Trap ◽  
Theoretical Description ◽  
Resonance Peak ◽  
Linear Ion Trap ◽  
Linear Trap ◽  
Ion Fragmentation ◽  
Excitation Time ◽  
Detailed Simulation ◽  
Trajectory Method ◽  
Ion Cloud

The process of nonlinear resonant excitation of ion oscillations in a linear trap is studied. There is still no detailed simulation of the resonance peak in the literature. We propose to use the excitation contour to describe the collective ion resonance. The excitation contour is a resonant mass peak obtained by the trajectory method with the Gaussian distribution of the initial coordinates and velocities. The following factors are considered: excitation time, low order hexapole and octopole harmonics with amplitudes A3 and A4, the depth of the initial ion cloud position. These multipoles are used for selective ion ejection from linear ion trap. All these factors affect the ion yield and the shape of the contours. Obtained data can be useful for control of such processes as ion fragmentation, ion isolation, ion activation, and ion ejection. Simulated resonance peaks are important for the theoretical description of the ion collective nonlinear resonances.

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