Ion Guiding and Ion Extraction from the CISe Gas Catcher

Werff, Lisa van der (2022) Ion Guiding and Ion Extraction from the CISe Gas Catcher. Master's Thesis / Essay, Physics.

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Abstract

Gas catchers are widely used for stopping and thermalizing high-energetic nuclear reaction products to perform high precision mass measurements. The general idea of a gas catcher is to reduce the level of impurities in the buffer gas to increase the extraction efficiency. However, the Chemical Isobaric Separation (CISe) technique for the separation of isobars aims to make use of the chemistry inside the gas catcher. The goal of this research project is to study the ion guiding and ion extraction from the gas catcher in off-line measurements. An electrode system, consisting of RF- and DC electric fields, is used to guide and extract the ions. A low-energy radioactive ion source, Ra-223, was mounted inside the gas catcher to produce ions. A silicon detector was installed behind the gas catcher to identify the extracted ions by measuring the energies of their emitted alpha-particles. Based on the measurements, it was concluded that Bi-211 ions were extracted from the gas catcher, but not the short-lived Rn-219 ions. From the studies, it is proposed how to improve the ion guiding process.

Item Type:	Thesis (Master's Thesis / Essay)
Supervisor name:	Even, J. and Rigollet, C.E.
Degree programme:	Physics
Thesis type:	Master's Thesis / Essay
Language:	English
Date Deposited:	06 Sep 2022 12:34
Last Modified:	06 Sep 2022 12:34
URI:	https://fse.studenttheses.ub.rug.nl/id/eprint/28589

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