Results 11 to 20 of about 1,448,953 (255)

SWIFTSIN: A High-Resolution Ion Isolation Waveform for the Miniaturized Linear ion Trap Mass Spectrometer by Coarse to Fine Excitation [PDF]

open access: yes, 2022
To figure out the reason for the drawback of the SWIFT waveform and realize the high-resolution ion isolation on the miniaturized linear ion trap mass spectrometer, we studied the efficiency that ions can be excited under different excitation durations ...
Quan, Yu   +5 more
core   +1 more source

Electronic spectroscopy of cold ions in a radio-frequency trap [PDF]

open access: yes, 2010
The low density of ions in mass spectrometers generally precludes direct absorption measurements. The spectrum of ions can nonetheless be obtained by using resonance two-color photofragmentation or multiphoton photofragmentation techniques.
Rudnev, Vitaly S.
core   +1 more source

Electronic spectroscopy of cold cations in a 22-pole trap by indirect methods [PDF]

open access: yes, 2013
The confining capabilities of a 22-pole ion trap have been employed to mea- sure electronic spectra of cations of astrophysical relevance. The ion trap sits on the head of a closed cycle cryostat, enabling collisional cooling of the confined ions with
Chakrabarty, Satrajit
core   +1 more source

Study of Dipolar Direct Current Excitation Driven-Collision Induced Dissociation Processes in Digital Ion Traps [PDF]

open access: yesZhipu Xuebao, 2023
The development of fragment ion detection is significant for improving the analysis capacity of mass spectrometry. Fragmentation technique has been widely used in the identification of peptides and top-down/bottom-up proteomics analysis.
ZHOU Wen-xing1,2;HUANG Gang2;CAI Hong-hua2;LIU Jun-jie2;DENG Yi-bing3;YANG Qing-yu1;WANG Wei-min4;XU Fu-xing4;DING Chuan-fan4
doaj   +1 more source

Endcap-type Paul trap for precision spectroscopy and studies of ion-crystal dynamics [PDF]

open access: yesAIP Advances
We present the design and fabrication of an endcap-type Paul trap. The trap is designed for studies with Ca+ and Yb+. The design, fabrication process, and characterization are presented in detail, with a focus on trapping a single compensated ion at the ...
Anand Prakash   +7 more
doaj   +1 more source

Multilayer ion trap technology for scalable quantum computing and quantum simulation

open access: yesNew Journal of Physics, 2019
We present a novel ion trap fabrication method enabling the realization of multilayer ion traps scalable to an in principle arbitrary number of metal-dielectric levels.
A Bautista-Salvador   +6 more
doaj   +1 more source

Methods for structural characterisation of Quillaja saponins by electrospray ionisation ion trap multiple-stage mass spectrometry [PDF]

open access: yes, 2008
This thesis describes methods for structural classification of Quillaja saponins based on high performance liquid chromatography hyphenated electrospray ionisation ion trap multiple-stage mass spectrometry, in combination with multivariate analysis ...
Bankefors, Johan
core   +1 more source

Efficient computational scheme for ion dynamics in RF-field of Paul trap

open access: yesDiscrete and Continuous Models and Applied Computational Science, 2019
We have developed an efficient computational scheme for integration of the classical Hamilton equations describing the ion dynamics confined in the radio-frequency field of the Paul trap.
Vladimir S. Melezhik
doaj   +1 more source

Ion-Trap-Performance Enhancement Utilizing Pulsed Buffer-Gas Introduction

open access: yes, 2018
A novel means of improving the resolution and total ion signal inside a digitally driven 3D quadrupole ion trap has been studied. Conventional ion-trapping methods occur by injecting helium gas continuously into the trap to kinetically cool ions and ...
Timothy Vazquez   +5 more
core   +1 more source

Ion trapping with fast-response ion-selective microelectrodes enhances detection of extracellular ion channel gradients [PDF]

open access: yes, 2008
Previously, functional mapping of channels has been achieved by measuring the passage of net charge and of specific ions with electrophysiological and intracellular fluorescence imaging techniques.
Collis, Leon P.   +3 more
core   +1 more source

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