Kinetic energy of an N + ion cloud throughout the stability diagram

A precise time-of-flight method previously developed is used to investigate the average kinetic energy of an N + ion cloud. From values obtained for different points in the Mathieu stability diagram, variation of the kinetic energy versus the corresponding experimental parameters is estimated. It is...

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Bibliographic Details
Published inInternational journal of mass spectrometry Vol. 190; pp. 37 - 45
Main Authors Vedel, M., Rocher, J., Knoop, M., Vedel, F.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 1999
Elsevier
Subjects
Kinetic energy measurements
Paul trap
Physics
Time-of-flight methods
Kinetic energy measurements
Time-of-flight methods
Paul trap
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Summary:A precise time-of-flight method previously developed is used to investigate the average kinetic energy of an N + ion cloud. From values obtained for different points in the Mathieu stability diagram, variation of the kinetic energy versus the corresponding experimental parameters is estimated. It is observed that the magnitude depends essentially on the smallest two-dimensional component of the three-dimensional potential well. Measurements at different radiofrequencies (0.5, 1, and 1.5 MHz) show that the kinetic energy does not increase with the rf frequency. From the observed temporal variation of the kinetic energy, collisional cooling is evidenced.
ISSN:1387-3806
1873-2798
DOI:10.1016/S1387-3806(99)00004-4