Results 271 to 280 of about 3,745,024 (299)

Charge interaction in a Paul trap

Bulletin of the Lebedev Physics Institute, 2008
In third order perturbation theory we obtained the expression for an averaged Hamiltonian describing the classical motion of two particles in a Paul trap. The arising small corrections are interpreted as mass and charge renormalization.
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Effect of the Double Frequency of Trap Field in a Paul Trap

Communications in Theoretical Physics, 2001
The effect of double frequency of trap field phi = U - V-1 cos Ohmt - V-2 cos 2 Ohmt in a Paul trap can be described exactly by using a function series expansion to solve the corresponding Mathieu equation. The stability regions of a trapped ion are plotted and some meaningful physical results are shown.
Nie Zong-Xiu, Feng Mang, Li Jiao-Mei, Shi Lei, Zhu Xi-Wen, Gao Ke-Lin   +5 more
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Single Ions in Paul Traps

2007
The use of cold trapped ions for quantum information processing requires the preparation of linear strings of ions at low temperatures and the coherent manipulation by laser light of the quantum state of individual ions in the string. In our experiment, 40Ca+ ions are trapped in a linear Paul trap, forming crystallized linear strings when laser cooled.
H. C. Nägerl, Ch. Roos, H. Rohde, D. Leibfried, J. Eschner, F. Schmidt-Kaler, R. Blatt   +6 more
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Study of Nonlinear Resonance Effect in Paul Trap

Journal of the American Society for Mass Spectrometry, 2013
In this article, we investigated the nonlinear resonance effect in the Paul trap with a superimposed hexapole field, which was assumed as a perturbation to the quadrupole field. On the basis of the Poincare-Lighthill-Kuo (PLK) perturbation method, ion motional equation, known as nonlinear Mathieu equation (NME) was expressed as the addition of ...
Xiaoyu, Zhou, Caiqiao, Xiong, Shuo, Zhang, Ning, Zhang, Zongxiu, Nie   +4 more
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Ion crystals in Paul traps

AIP Conference Proceedings, 1995
The dynamics of small ion crystals in a Paul trap has been studied by numerical solutions of deterministic equations of motion that include the time dependence of the trapping potential. For small trap voltage, the crystal shell structure agrees with earlier calculations based on a harmonic pseudopotential.
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Quantum Motion in a Paul Trap

Journal of Modern Optics, 1992
Abstract This paper discusses the one dimensional quantum motion in a Paul trap maintained by a radio frequency potential. The exact Wigner function is constructed. Similarities and differences with the classical motion and with the motion in a purely harmonic trap are discussed. The stable and unstable cases are both treated.
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Large Ion Crystals in a Linear Paul Trap

Physical Review Letters, 1998
Plasmas of Mg{sup +} ions, containing more than 10{sup 5} ions, have been observed to reach well-ordered (crystalline) states by applying laser cooling. The crystals are highly elongated with up to ten concentric cylindrical shells surrounding a central string. Such large structures have not previously been observed in a Paul trap. The amplitude of the
Drewsen, Michael; id_orcid 0000-0002-0420-9923, Brodersen, C., Hornekær, Liv, Hangst, Jeffrey S., Schiffer, J.P.   +4 more
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Weak Interaction Studies Using a Paul Trap

Hyperfine Interactions, 2001
New developments in ion cooling and ion bunching allow the trapping of radioactive ions from a low energy beam, in a very short time scale and with very good efficiency. The performances of Radio Frequency Quadrupole (RFQ) coolers, recently developed in several laboratories in Europe and USA, are now better known.
Delahaye, P., Ban, G., Durand, D., Vinodkumar, A.M., Le Brun, C., Liénard, E., Mauger, F., Naviliat-Cuncic, O., Szerypo, J., Tamain, B.   +9 more
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Ion crystal size and structure in Paul traps

European Journal of Mass Spectrometry
This article presents a relationship between the size of an ion crystal in a Paul trap and the radio frequency potential applied on the central ring electrode. Using a simple and elegant derivation it has been shown that the distance of an ion in the crystal from the trap center is proportional to [Formula: see text] power of the applied radio ...
Appala Naidu Kotana, Atanu K Mohanty
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Quantum motion of a charged particle in a Paul trap

Physical Review A, 1993
A numerical method to solve the Schrodinger equation for a charged particle in a Paul trap is suggested. The quantum secular motion approximation is examined by comparing the exact numerical solution with the approximate result.
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