Abstract
A new technique employing conductive polymeric electrodes for the generation of linear electric fields is proposed and validated. A hollow cylinder comprised of DuPont’s Vespel SP-22, a polymer loaded with conductive carbon particles, is used to enhance the performance of a hybrid reflectron compared to a conventional dual stage gridless reflectron composed of discrete metal ring electrodes. Both devices have comparable physical dimensions and nearly identical ion optical properties. Instrumental resolution measurements are used to validate this novel design.
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Pillay, A. E. A Review of Accelerator-Based Techniques in Analytical Studies. J. Radioanal. Nucl. Chem. 2000, 243, 191–197.
Mamyrin, B. A. Time-of-Flight Mass Spectrometry (Concepts, Achievements, and Prospects). Int. J. Mass Spectrom. 2001, 206, 251–266.
Gruen, D. M.; Young, C. E.; Pellin, M. J. Photo Ion Spectrometer. U.S. Patent no. 4,855,596.
Even, U.; Dick, B. Computer Optimization for High-Resolution Time-of-Flight Mass Spectrometer. Rev. Sci. Instr. 2000, 71, 4415–4420.
McKeachie, J. R.; van der Veer, W. E.; Short, L. C.; Garnica, R. M.; Appel, M. F.; Benter, T. Selective Ultra-Trace Detection of NO and NO2 in Complex Gas Mixtures Using Broad-Bandwidth REMPI Mass Spectrometry. Analyst 2001, 126, 1221–1228.
Garnica, R. M.; Appel, M. F.; Eagan, L.; McKeachie, J. R.; Benter, T. A REMPI Method for the Ultrasensitive Detection of NO and NO2 Using Atmospheric Pressure Laser Ionization Mass Spectrometry. Anal. Chem. 2000, 72, 5639–5646.
Schmidt, S.; Appel, M. F.; Garnica, R. M.; Schindler, R. N.; Benter, T. Atmospheric Pressure Laser Ionization. An Analytical Technique for Highly Selective Detection of Ultralow Concentrations in the Gas Phase. Anal. Chem. 1999, 71, 3721–3729.
Hopkins, A. R.; Lewis, N. S. Detection and Classification Characteristics of Arrays of Carbon Black/Organic Polymer Composite Chemiresistive Vapor Detectors for the Nerve Agent Simulants Dimethylmethylphosphonate and Diisopropylmethylphosponate. Anal. Chem. 2001, 73, 884–892.
Skotheim, T. A.; Elsenbaumer, R. L.; Reynolds, J. R., Eds. Handbook of Conducting Polymers. Marcel Dekker, Inc: New York, 1998; 2nd ed. 963.
“Vespel Data Sheet”, DuPont.
Goembel, L.; Doering, J. P. A Compact, Light Weight, High Resolution Electron Monochromator. Rev. Sci. Instr. 1995, 66, 3472–3474.
Tang, H.; Feng, H. Q.; Luo, H. B.; Dong, L. S.; Feng, Z. L. The Aggregation State of Polyimide. Eur. Polym. J. 1997, 33, 519–523.
Hait, P. W. The Application of Polyimide to Ultrahigh Vacuum Seals. Vacuum (UK) 1967, 17, 547–550.
Nagashima, A.; Nishitani, T.; Fujisawa, T.; Sugie, T.; Kasai, S. Development of Vacuum Seals for Diagnostic Windows of the International Thermonuclear Experimental Reactor. Rev. Sci. Instr. 1999, 70, 460–463.
Sichel, E. K., Ed. Carbon Black-Polymer Composites: The Physics of Electrically Conducting Composites, Vol. III. Marcel Dekker, Inc: New York, 1982, 79.
Ghosh, P.; Chakrabarti, A. Conducting Carbon Black Filled EDPM Vulcanizates: Assessment of Dependence of Physical and Mechanical Properties and Conducting Character on Variation of Filler Loading. Eur. Polym. J. 2000, 36, 1043–1054.
Dahl, D. A. Simion 7.0; Ion Source Software: P.O. Box 2726, Idaho Falls, ID 83403.
Cotter, R. J. Time-of-Flight Mass Spectrometry: Instrumentation and Applications in Biological Research. American Chemical Society: Washington, DC, 1997, 60.
Piyadasa, C. K. G.; Hakansson, P.; Ariyaratne, T. R. A High Resolving Power Multiple Reflection Matrix-Assisted Laser Desorption/Ionization Time-of-Flight Mass Spectrometer. Rapid Commun. Mass Spectrom. 1999, 13, 620–624.
Park, M. Coaxial Multiple Reflection Time-of-Flight Mass Spectrometer. U.S. Patent no. 6,107,625.
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Appel, M.F., van der Veer, W.E. & Benter, T. Conductive carbon filled polymeric electrodes: Novel ion optical elements for time-of-flight mass spectrometers. J. Am. Soc. Spectrom. 13, 1170–1175 (2002). https://doi.org/10.1016/S1044-0305(02)00438-5
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DOI: https://doi.org/10.1016/S1044-0305(02)00438-5