Results 121 to 130 of about 60,967 (160)

Quantum chaos of an ion trapped in a linear ion trap

Chaos: An Interdisciplinary Journal of Nonlinear Science, 2000
We describe the transition to quantum chaos of an ion trapped in a linear ion trap and interacting with two laser fields. Under the conditions of adiabatic illumination of the upper level of the ion, and when the frequencies of the two laser beams are slightly different, the system is reduced to a quantum linear oscillator interacting with a ...
Berman, Gennady P., James, Daniel F. V., Kamenev, Dimitri I.   +2 more
openaire   +2 more sources

Linear ion traps in mass spectrometry

Mass Spectrometry Reviews, 2004
Abstract   I. Introduction 000  II. Linear Multipoles 000 A.  Multipole Fields 000     1.  Multipole Potentials 000     2.  Ion Motion in 2D Multipole Fields 000     3.  Ion Motion in Quadrupole Fields 000     4.  Ion Motion in Higher Multipole Fields 000     5.
Donald J, Douglas, Aaron J, Frank, Dunmin, Mao   +2 more
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Axial Ion Focusing in a Miniature Linear Ion Trap

Analytical Chemistry, 2007
A novel miniature linear ion trap with a total length of 19 mm and a quadrupole rod length of 15 mm has been fabricated to enable ion focusing in the axial plane (between the end caps). Each end cap includes an inwardly projecting tubular section, which prevents dc fringe fields from penetrating to the center of the miniature linear ion trap and aids ...
Gareth S, Dobson, Christie G, Enke
openaire   +2 more sources

Investigation of the effect of an octopole electric field on a linear ion trap and an asymmetric semi-circular linear ion trap analyzer

The Analyst, 2021
A linear ion trap mass analyzer could improve analytical performance compared to the traditional three-dimensional ion trap, giving rise to higher analytical performance.
Fuxing Xu, Weimin Wang, Xinhua Dai, Xiang Fang, Chuan-Fan Ding   +4 more
openaire   +2 more sources

Nondestructive Tandem Mass Spectrometry Using a Linear Quadrupole Ion Trap Coupled to a Linear Electrostatic Ion Trap

Analytical Chemistry, 2013
A novel hybrid tandem mass spectrometer is presented that combines a linear quadrupole ion trap (QLIT) with a linear electrostatic ion trap (ELIT), which is composed of opposing ion mirrors. The QLIT is used both as an accumulation device for the pulsed injection of ions into the ELIT and as a collision cell for ions released from the ELIT and back ...
Ryan T, Hilger, Robert E, Santini, Scott A, McLuckey   +2 more
openaire   +2 more sources

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
openaire   +2 more sources

Laser photodissociation in a linear ion trap

SPIE Proceedings, 2003
The perspectives of using laser multiphoton dissociation processes for analysis of the polyatomic molecules are considered. It is shown that mass analysis of both the initial molecules and the fragments of dissociation is preferably to be carried out by means of linear ion trap acting in MS regime.
M. N. Makhmudov, V. A. Stepanov, M. Yu. Sudakov, A. B. Yastrebkov   +3 more
openaire   +1 more source

Laser addressing of individual ions in a linear ion trap

Physical Review A, 1999
Single ions in a linear string have been addressed with a tightly focused laser beam and an acousto-optic deflector. The excitation into a long-lived metastable level is detected with a quantum jump technique. Single-quantum bit operations for quantum information processing with trapped ions are shown to be feasible.
H. C. Nägerl, D. Leibfried, H. Rohde, G. Thalhammer, J. Eschner, F. Schmidt-Kaler, R. Blatt   +6 more
openaire   +1 more source

Ion Isolation in a Linear Ion Trap Using Dual Resonance Frequencies

Journal of the American Society for Mass Spectrometry, 2016
Ion isolation in a linear ion trap is demonstrated using dual resonance frequencies, which are applied simultaneously. One frequency is used to eject ions of a broad m/z range higher in m/z than the target ion, and the second frequency is set to eject a range of ions lower in m/z. The combination of the two thus results in ion isolation.
Dalton T Snyder, R Graham Cooks
exaly   +3 more sources

Ion crystals in a linear Paul trap

Hyperfine Interactions, 1998
Large ion crystals containing as many as 105 laser-cooled 24Mg+ ions arranged in 10 cylindrical shells around a central string have been observed in a linear Paul trap. For smaller crystals consisting of approximately 3500 ions, the varying linear charge densities along the trap axis give rise to well-defined transition regions between the different ...
Hornekær, Liv, Drewsen, Michael; id_orcid 0000-0002-0420-9923, Brodersen, C., Schiffer, J.P., Hangst, Jeffrey S.   +4 more
openaire   +2 more sources