Modeling Depolarization and Scattering in a Complex System

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Modeling Depolarization and Scattering in a
Complex System

• Geoff Franz

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Outline

• Brief Review of Project
• Major Accomplishments
• Preliminary Results
• Timetable

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- Review - Specific Aims

• Broad, long-term objective
• Make data gathered from existing
  microgoniophotometer more interpretable
• Development of empirical models
• Scattering and depolarization models for our
  system
• Design and construction of a useful optical
  instrument

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- Review -Experimental Design and Methods

• Hypothesis
• An empirical model can be developed that can
  predict scattering from the amount of
  depolarization for particles of sizes ranging
  from 0.1-10µm.

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Major Accomplishments

• Computer set up
• LabVIEW Installed
• Data Acquisition Program Written
• Experimental Setup Created and Characterized
• Initial Data Collected for One Sample

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- Review -Original Experimental Setup Plan
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Actual Experimental Setup
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Actual Experimental Setup
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Preliminary Results
Before empirical correction 0 in red 90 in
blue
After empirical correction for non-Lambertian
data)
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Timetable

• Spring Quarter
• Weeks 1-2 Continue and finish data collection
  on the remaining five samples.
• Weeks 3-4 Process and analyze the data as a
  whole, compare to published models.
• Weeks 5-6 Develop a relationship between
  scattering and depolarization for the system.
• Weeks 7-9 Write up the final report and prepare
  the final presentation.
• Week 10 Turn in report and give final
  presentation.

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The End

• Questions and Comments?