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dc.contributor.advisorSmith, Craig
dc.contributor.advisorGrbovic, Dragoslave
dc.contributor.authorLau, Sunny G.
dc.dateJun-15
dc.date.accessioned2015-08-05T23:05:48Z
dc.date.available2015-08-05T23:05:48Z
dc.date.issued2015-06
dc.identifier.urihttp://hdl.handle.net/10945/45886
dc.description.abstractThe application of resonance ionization mass spectroscopy (RIMS) to nuclear forensics involves the use of lasers to selectively ionize elements of concern. While current systems incorporate pulsed lasers for analysis of debris from nuclear detonation, the possibility exists to consider using continuous wave, or CW lasers RIMS has the potential to provide rapid quantification of isotope ratios of important elements in debris from nuclear detonation. The current approach to ionize uranium and plutonium uses three Ti-Sapphire pulsed lasers capable of a fundamental wavelength range of 700–1000 nm to perform ionization in three steps. This thesis evaluates the use of COTS CW laser to replace one of the pulsed lasers exciting the second resonance step of plutonium near 847.282 nm. The thesis research consists of three elements: (1) completion of an initial feasibility study to determine the viability of the COTS CW alternative, (2) identification and acquisition of a candidate COTS laser, and (3) testing to evaluate the critical laser parameters necessary to achieve high precision isotope ratio measurements including the stability over time of the mean wavelength, bandwidth and spectral mode purity. This narrower bandwidth COTS CW laser may enable simpler operations, greater robustness and better utilization of the available laser irradiance.en_US
dc.description.urihttp://archive.org/details/characterization1094545886
dc.publisherMonterey, California: Naval Postgraduate Schoolen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleCharacterization of a continuous wave laser for resonance ionization mass spectroscopy analysis in nuclear forensicsen_US
dc.typeThesisen_US
dc.contributor.departmentPhysics
dc.contributor.departmentPhysicsen_US
dc.subject.authorRIMSen_US
dc.subject.authorresonance ionizationen_US
dc.subject.authormass spectroscopyen_US
dc.subject.authornuclear forensicsen_US
dc.subject.authorcontinuous wavelength laseren_US
dc.subject.authorCWen_US
dc.subject.authorplutoniumen_US
dc.subject.authorCOTSen_US
dc.subject.authorisotopeen_US
dc.subject.authorcharacterizationen_US
dc.description.serviceLieutenant Commander, United States Navyen_US
etd.thesisdegree.nameMaster of Science in Applied Physicsen_US
etd.thesisdegree.levelMastersen_US
etd.thesisdegree.disciplineApplied Physicsen_US
etd.thesisdegree.grantorNaval Postgraduate Schoolen_US
dc.description.distributionstatementApproved for public release; distribution is unlimited.


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