التفاصيل البيبلوغرافية
| العنوان: |
Dipole Excitation With A Paul Ion Trap Mass Spectrometer. |
| المؤلفون: |
MacAskill, J. A., Madzunkov, S. M., Chutjian, A. |
| المصدر: |
AIP Conference Proceedings; 6/1/2011, Vol. 1336 Issue 1, p127-131, 5p, 5 Graphs |
| مصطلحات موضوعية: |
ION traps, MASS spectrometry, IONS spectra, DIPOLE moments, RADIO frequency, FREQUENCIES of oscillating systems, EXCITON theory |
| مستخلص: |
Preliminary results are presented for the use of an auxiliary radiofrequency (rf) excitation voltage in combination with a high purity, high voltage rf generator to perform dipole excitation within a high precision Paul ion trap. These results show the effects of the excitation frequency over a continuous frequency range on the resultant mass spectra from the Paul trap with particular emphasis on ion ejection times, ion signal intensity, and peak shapes. Ion ejection times are found to decrease continuously with variations in dipole frequency about several resonant values and show remarkable symmetries. Signal intensities vary in a complex fashion with numerous resonant features and are driven to zero at specific frequency values. Observed intensity variations depict dipole excitations that target ions of all masses as well as individual masses. Substantial increases in mass resolution are obtained with resolving powers for nitrogen increasing from 114 to 325. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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