1977
DOI: 10.1016/0020-7381(77)80064-8
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Performance of the quadrupole mass filter with separated RF and DC fringing fields

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Cited by 9 publications
(6 citation statements)
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“…Operating at even higher dc/rf ratios can result in a decrease in resolution as the main part of the peak diminishes faster than the "wings" of the peak (26,27). Velocity discrimination effects are evident from comparing the different curves in each region, so that one can distinguish between problems of ion extraction from the source (region 1) from those of ion entry into the quadrupole (region 2).…”
Section: The Real World: Performance Measurementsmentioning
confidence: 97%
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“…Operating at even higher dc/rf ratios can result in a decrease in resolution as the main part of the peak diminishes faster than the "wings" of the peak (26,27). Velocity discrimination effects are evident from comparing the different curves in each region, so that one can distinguish between problems of ion extraction from the source (region 1) from those of ion entry into the quadrupole (region 2).…”
Section: The Real World: Performance Measurementsmentioning
confidence: 97%
“…Round rods that are correctly positioned give rise only to tenth-order terms; i.e., only ions with trajectories very close to the rods will be significantly affected. Any limitation (a theoretical estimate (27) suggests a limitation only at resolutions of several thousand (21)) could be avoided by a sacrifice in the source size. However, if round rods are incorrectly positioned, the errors are likely to be more serious than a similar problem with hyperbolic rods.…”
Section: Field Faultsmentioning
confidence: 99%
“…Эллипсы наклоняются влево, т. е. сходящийся вход-ной пучок ионов становится наиболее предпочтитель-ным для всех начальных фаз. Подобные особенности фа-зовых эллипсов КФМ с входной диафрагмой отмечались также в [9,12]. …”
Section: результаты расчетаunclassified
“…В расчетах использовались методы динамики фазового пространства [2,12], а также предложенная ранее модель переходного поля [13].…”
Section: Introductionunclassified
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