The high mass range time-of-flight secondary ion mass spectra of different polyarene films on silver

1997 ◽  
Vol 357 (6) ◽  
pp. 684-687 ◽  
Author(s):  
D. Pleul ◽  
F. Simon ◽  
H.-J. Jacobasch
Keyword(s):  
Mass Spectra ◽  
Time Of Flight ◽  
Mass Range ◽  
High Mass ◽  
High Mass Range ◽  
Secondary Ion

scholarly journals Limitation of Time-of-Flight Resolution in the Ultra High Mass Range

2011 ◽  
Vol 83 (15) ◽  
pp. 5831-5833 ◽  
Author(s):  
Jeonghoon Lee ◽  
Peter T. A. Reilly
Keyword(s):  
Time Of Flight ◽  
Mass Range ◽  
High Mass ◽  
High Mass Range

Capillary ionic liquid electrospray: beam compositional analysis by orthogonal time-of-flight mass spectrometry

2021 ◽  
Vol 928 ◽  
Author(s):  
S.W. Miller ◽  
J.R. Ulibarri-Sanchez ◽  
B.D. Prince ◽  
R.J. Bemish
Keyword(s):  
Mass Spectrometry ◽  
Mass Spectra ◽  
Time Of Flight ◽  
Ion Source ◽  
High Mass ◽  
Atomic Mass Unit ◽  
Flow Rates ◽  
Charged Species ◽  
Flight Mass Spectrometry ◽  
Jet Breakup

Orthogonal time-of-flight mass spectrometry has been used to characterize the kinetic energy and charged species distributions from an in vacuo electrospray ion source for four different ionic liquids at volumetric flow rates between 0.3 and 3.3 nanolitres per second. In all cases, the mass spectra revealed charged species consisting of singly charged and multiply charged ions as well as two broad, unresolved droplet distributions occurring in the 104 to 106 atomic mass unit per charge range. The mean jet velocity and mean jet breakup potential were established from analysis of the energy profile of the high mass-to-charge droplets. At the jet breakup point, we find the energy loss and the jet diameter flow rate dependence of the electrospray beam to be similar to that determined by Gamero-Castaño (Phys. Fluids, vol. 20, 2008, 032103; Phys. Rev. Fluids, vol. 8, 2021, 013701) for 1-ethyl-3-methylimidazolium bis(trifluromethylsulfonyl)imide at similar volumetric flow rates. Similar trends are observed for all four liquids over the flow regime. A jet instability analysis revealed that jet electrification and viscous effects drive the jet breakup from the case of an uncharged, inviscid jet; jet breakup occurs at droplet and jet radius ratios that deviate from 1.89. Using the analytically determined ratio and the beam profile, different species are modelled to reconstruct the mass spectra; primary droplets constitute only a fraction of the total species present. The populations of the species are discussed.

Effect of Stereoregularity on TOF-SIMS Spectra of Polymers

1994 ◽  
Vol 48 (5) ◽  
pp. 620-622 ◽  
Author(s):  
Paul A. Zimmerman ◽  
David M. Hercules
Keyword(s):  
Mass Spectrometry ◽  
Methyl Methacrylate ◽  
Secondary Ion Mass Spectrometry ◽  
Time Of Flight ◽  
Mass Region ◽  
High Mass ◽  
Polypropylene Oxide ◽  
Tof Sims ◽  
Stereoregular Polymers ◽  
Secondary Ion

This study shows the utility of time-of-flight secondary ion mass spectrometry (TOF-SIMS) for the analysis of stereoregular polymers. It is possible to obtain distinctive spectra for polymers of different stereoregularity. The high mass region of the spectrum from 600 to 3000 Da is related to differences in polymer stereoregularity. Differences occur in the relative intensities and/or locations of clusters for polymers of different stereoregularities. Polymers studied include poly(methyl methacrylate), polypropylene, and polypropylene oxide. The extent of stereoregularity influences the degree of difference observed in the TOF-SIMS spectra.

Advantages of high-resolution and high-mass range magnetic-sector mass spectrometry for electrospray ionization

1992 ◽  
Vol 27 (3) ◽  
pp. 195-203 ◽  
Author(s):  
John R. Chapman ◽  
Richard T. Gallagher ◽  
E. C. Barton ◽  
Jonathan M. Curtis ◽  
Peter J. Derrick
Keyword(s):  
Mass Spectrometry ◽  
High Resolution ◽  
Electrospray Ionization ◽  
Mass Range ◽  
High Mass ◽  
Magnetic Sector ◽  
High Mass Range
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