The Method of Ion Mobility TOF Mass Spectrometry for Rapid Identification of Triphenylmethane Ball Point Pen Dyes

AbstractIn this work ion mobility time-of-flight mass spectrometry is preliminarily studied as a method for identification of the composition for triphenylmethane ball point pen dyes by their traces on paper. Components were identified as Basic violet 2, Methyl violet 6B, Methyl violet 2B, Crystal violet. All the compounds were shown to form excellent individual mass selective mobility peaks. Short time of analysis allow one to consider IMS/TOFMS as a perspective alternative for traditional methods of identification

Transmission of a Drift Tube Ion Mobility Spectrometer, Connected with a Mass Spectrometer

AbstractIn this work it is experimentally showed that transmission of atmospheric drift tube ion mobility spectrometer (DT-IMS), connected with mass spectrometer (MS), depends on ion mobility of investigated compounds, because of depletion effect of Bradbury-Nielson ion gate (IG), which previously has been approved only by standalone DT-IMS. Theoretical estimation of depletion width of IG is in good agreement with experimental data. Also it is found, that ion lost due to its pulsing work of IG are few times smaller, than its duty cycle. It's explained by difference in influence of coulomb repulsion at 100% and 1% duty cycle – in first case it's significant versus second case, when coulomb repulsion become negligibly small, that reduces lost of ions on entrance of MS interface

The Development of Nuclear Frequency Standard with the Use of Ion Crystals Manipulation System

AbstractThe perspectives for the increase in the accuracy of optical frequency standards by means of the development of “nuclear clocks” – a novel frequency standard based on the nuclear transition to the long-living isomer nuclear state of thorium-229 with energy ∼7.6eV are discussed. Theoretical estimations give a possible accuracy Δν/ν ∼1×10-20, that allows wide scope of applications for a frequency standard, from satellite navigation systems to experimental verification of the principles of the general theory of relativity. The results are presented and the future prospects for research are discussed on the measurement of the isomeric transition in the nucleus of thorium-229 and creation on its basis the frequency standard of the new generation