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SUMMARY:Understanding Intra-day and Inter-day Variation in LIBS - James Cu
 rran (University of Auckland)
DTSTART:20161110T161500Z
DTEND:20161110T170000Z
UID:TALK68927@talks.cam.ac.uk
CONTACT:INI IT
DESCRIPTION:Co-authors: Anjali Gupta (University of Auckland)\,  Chris Tri
 ggs (Universtity of Auckland)\, Sally Coulson (ESR)&nbsp\;<br><br>LIBS (la
 ser induced breakdown spectroscopy) is a low-cost alternative and highly p
 ortable instrument that can be used in forensic applications to determine 
 elemental composition. It differs from more traditional instruments such a
 s ICP-MS and $\\mu$-XRF in that the output is a spectrum rather than the c
 oncentration of elements. LIBS has great appeal in forensic science but ha
 s yet to enter the mainstream. One of the reasons for this is a perceived 
 lack of reproducibility in the measurements over successive days or weeks.
  In this talk I will describe a simple experiment we designed to investiga
 te this phenomenon\, and the consequences of our findings. The analysis in
 volves both classical methodology and a simple Bayesian approach. &nbsp\;
LOCATION:Seminar Room 1\, Newton Institute
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