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An off-line ion guide quadrupole mass spectrometer system

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Authors
El Youbi, Sara
Date
2017
Discipline
FysiikkaPhysics

 
Off-line ioniohjain kvadrupolimassaspektrometri systeemi. Uuden erillisen ioniohjain-kvadrupolimassaspektrometri (IGQMS) -systeemin käyttöönotto on esitetty tässä työssä. Laitteisto on kehitetty uusien tekniikoiden testaamiseen ja kehittämiseen IGISOL–laitoksella. Työssä on tutkittu laitteiston differentiaalista pumpaussysteemiä ja laitteiston etuosan kuljetustehokkuutta käyttäen 223Ra alfa-rekyylilähdettä. Painemittausten tulokset eri parametreilla ovat esitetty. Kaasuohjaimen käyttöpainealue on mitattu olevan 1 ja 700 mbar:n välillä pitäen käyttöpaineen QMS kammiossa, ja skimmer-systeemin läpäisytehokkuus olevan lähellä 100 %.
 
The commissioning of a new off-line ion guide quadrupole mass spectrometer (IGQMS) system, an off-line platform for the testing and development of new techniques to be implemented at the IGISOL–facility, is presented in this thesis. The differential pumping system is investigated and results of efficiency measurements of the front part of the system using a 223Ra alpha-recoil source are presented. Operational gas cell pressures from 1 up to 700 mbar have been demonstrated while maintaining operational pressure in the QMS chamber. A range of pressure measurements with different parameters is presented, and a transport efficiency through a squeezer-skimmer system of nearly 100 % has been measured.
 
Keywords
IGISOL ioniohjain tyhjiö käyttöpaine tehokkuus ion guide mass spectrometer off-line vacuum operational pressure efficiency ydinfysiikka ionit massaspektrometria
URI

http://urn.fi/URN:NBN:fi:jyu-201710264080

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