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Title: Visible and laser spectroscopy of highly charged ions in an electron beam ion trap
Author: Crosby, David N.
ISNI:       0000 0001 3397 6083
Awarding Body: University of Oxford
Current Institution: University of Oxford
Date of Award: 2003
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This thesis describes the development of visible and laser spectroscopy techniques for highly charged ions produced in an electron beam ion trap (EBIT). Visible spectroscopy measurements are reported of the 5D3 _5 D2 transition in titaniumlike Ag25+ and Sn28+, yielding results of 6314.81(4) Aand 4981.89(6) Arespectively. These are the most accurate measurements yet made in this system. Furthermore, the work points the way to extending the techniques t9 shorter wavelengths, in particular the vacuum ultraviolet, wherein significant improvements in the measurement of the QED sensitive ls2s 3So - ls2p 3 PO,1,2 transitions in heliumlike ions are anticipated to be possible. An measurement of the 2S1/ 2 - 2P3/ 2 transition in hydrogenlike nitrogen by a laser resonance method is reported. This is the first time that a laser induced transition has been observed in a highly charged ion confined within a trap. The measured result of 835.4(5) cm-1 although preliminary points towards the prospect of developing a critical test of the underlying theory. Additionally, the present status of the theory of the Lamb shift in the hydrogenlike systems and where there has been considerable development recently is reviewed.
Supervisor: Not available Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available