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http://hdl.handle.net/11375/18606
Title: | Development of a Low Energy Ion Mass Spectrometer |
Authors: | Karapetsas, Spyridon |
Advisor: | Robinson, J. E. |
Department: | Engineering Physics |
Keywords: | low energy;ion mass spectrometer;ion scattering;charge neutralization;ion accelerator;goniometer |
Publication Date: | Feb-1982 |
Abstract: | <p> The interaction mechanisms of an ion beam with a solid target are identified. Basic parameters associated with ion scattering, charge neutralization, inelastic energy losses and secondary ion production are described. Low energy (1-20 kev) experimental studies on these topics are reviewed. A low energy ion mass spectrometer is described. The ion beam is generated by an existing kev ion accelerator and is directed to a newly constructed UHV target chamer. The energy and angular distributions of the backscattered particles are measured with a hemispherical electrostatic analyser and a channeltron detector. A high precision goniometer allows target rotation about two perpendicular axes by angles of 180° and 90° with an accuracy and repeatability of 0.1°. The interaction chamber is bakeable to 250°c and was designed for an ultimate pressure of 10^-11 torr. The data acquisition system chamber scans the energy spectrum automatically so that the radiation dosage at the target is equalized for all channels. </p> |
URI: | http://hdl.handle.net/11375/18606 |
Appears in Collections: | Open Access Dissertations and Theses |
Files in This Item:
File | Description | Size | Format | |
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Karapetsas_Spyridon_1982_Masters.pdf | 7.09 MB | Adobe PDF | View/Open |
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