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A new beamline for positron annihilation lifetime spectroscopy

Weed, Ryan Winslow

Description

The major aspect of this research is the development of a variable-energy PALS beamline based on a Surko-type buffer gas positron trap, the first of its kind in the world. A significant amount of work has gone into optimization of the timing and intensity characteristics of positron pulse. Successful implantation of 'Mills ideal function' bunching method has led to positron pulses of 800ps, allowing depth selective studies across a range of defect sizes, from point defects with lifetimes as low...[Show more]

CollectionsOpen Access Theses
Date published: 2011
Type: Thesis (PhD)
URI: http://hdl.handle.net/1885/150799
DOI: 10.25911/5d51574746f4c
Access Rights: Open Access

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