The design and performance of an x-ray emission spectrometer using the polarized Kalpha spectra of chlorine and potassium

The x-ray emission spectrometer was designed to observe the polarization of x-ray fluorescence resulting from the excitation of a sample by synchrotron radiation. The incident photons are intense, monoenergetic and linearly polarized along the plane of the storage-ring orbit. The emission spectrometer records the entire K-alpha spectrum by dispersing the emitted radiation with a curved Si (111) crystal and detecting the resulting radiation with a resistive anode position sensitive detector; both of which are situated on a Rowland circle. A sample is fixed in position and located in the middle of the Rowland circle. The spectrometer can be positioned to detect fluorescence emitted at 0° and 90° with respect to the polarization/propagation direction of the incident x-rays. In KCl, there was no observable polarization dependence of the emission spectra at the chlorine edge and a large effect seen in potassium below the ionization threshold. There were also small effects seen in freon-13 when excitations were to Rydberg states.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Chemistry

Grantor dc:publisher

University of Nevada, Las Vegas

Year

2003

Author dc:creator

• Hudson, Amanda C

Contributors dc:contributor

• Dennis W. Lindle

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/1597

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-2596