Charge state optimisation for beryllium accelerator mass spectrometry

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http://hdl.handle.net/10138/314252

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Gonsalves , B C , Mizohata , K , Tikkanen , P O & Räisänen , J A 2020 , ' Charge state optimisation for beryllium accelerator mass spectrometry ' , Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms , vol. 469 , pp. 33-36 . https://doi.org/10.1016/j.nimb.2020.02.020

Title: Charge state optimisation for beryllium accelerator mass spectrometry
Author: Gonsalves, Basil C.; Mizohata, Kenichiro; Tikkanen, Pertti O.; Räisänen, Jyrki A.
Contributor: University of Helsinki, Materials Physics
University of Helsinki, Materials Physics
University of Helsinki, Department of Physics
University of Helsinki, Department of Physics
Date: 2020-04-15
Language: eng
Number of pages: 4
Belongs to series: Nuclear Instruments & Methods in Physics Research. Section B: Beam Interactions with Materials and Atoms
ISSN: 0168-583X
URI: http://hdl.handle.net/10138/314252
Abstract: The yields of 9Be charge states (q=+1,+2,+3, and +4) from injected BeO− were measured with terminal voltage range from 1 to 5 MV. The yields were determined from the momentum analysed beam currents measured by beam profile monitors, after the 90° injector and analysing magnets. Stripping gas pressure dependency of the transmission efficiency was also determined and the results were studied with SRIM simulations. The effect of stripping medium was studied using both Ar and CO2 gases. The presented results are compared against experimental values found from literature, semi-empirical parametrisation models, and charge-exchange theories.
Subject: AMS
Beryllium
Charge state
114 Physical sciences
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