Bulletin of the American Physical Society
2023 APS March Meeting
Volume 68, Number 3
Las Vegas, Nevada (March 5-10)
Virtual (March 20-22); Time Zone: Pacific Time
Session VV01: V: Poster Session III (7:00am-8:00am, PST)
7:00 AM,
Wednesday, March 22, 2023
Room: Virtual Room 1
Abstract: VV01.00017 : Characterization of an experimental setup for ion transmission from atmospheric pressure to a 16-pole ion trap in high vacuum.*
Presenter:
Abheek Roy
(Indian Institute of Science Education and Research, Tirupati)
Authors:
Abheek Roy
(Indian Institute of Science Education and Research, Tirupati)
Uma N N
(IISER tirupati)
Salvi M
(IISER tirupati)
Hemanth Dinesan
(IISER tirupati)
Sunil Kumar
(IISER tirupati)
Electrospray ionization (ESI) sources find widespread applications in mass spectrometry in physical and biological sciences [1, 2], and for the experimental investigation of photon-induced processes like fluorescence and photodissociation. The ions generated at atmospheric pressure in an ESI source must be transported to the high vacuum region of a mass spectrometer and an ion trap for experimental studies [3] as these devices are unsuitable for usage under atmospheric conditions. Such high vacuum conditions are usually achieved in multiple stages. In this work, an experimental setup to transfer ions from an ion transfer capillary to a high vacuum chamber, containing a mass filter and a 16-pole ion trap to store and study different ion processes, was characterised. The setup transporting the ions was simulated using SIMION, an ion trajectory simulation software package. The ion transmission through an ion funnel, followed by an ion guide and a mass filter into the trap was optimized. The working of the trap was simulated and then tested in two different modes of loading the ions in the trap, continuous and pulsed loading by pulsing the ion beam coming out of the ion funnel. The pulsed mode was found to give a better result as compared to the continuous loading.
References:
- 1. Postle, et al, Progress in Lipid Research 46 (3-4): 200–224.
2. Raymond, et al, European Journal of Inorganic Chemistry 2018 (9): 1120–30.
3. Kumar, S. S., et al, The Astrophysical Journal 776 (1): 25.
*Department of Science & Technology (DST), Science and Engineering Research Board (CRG/2021/005022, ECR/2017/002273), India
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