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Preparing an Isotopically Pure 229Th Ion Beam for Studies of 229mTh

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Multichannel Thomson scattering apparatus.

N Bretz, D Dimock, V Foote

|February 23, 2010

Summary

This summary is machine-generated.

A new Thomson scattering system accurately measures electron temperature and density in PLT plasma. This advanced diagnostic tool provides detailed spatial profiles for plasma research.

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Area of Science:

Plasma Physics
Fusion Energy Research
Diagnostic Techniques

Background:

Understanding plasma properties like electron temperature (T(e)) and density (N(e)) is crucial for magnetic confinement fusion research.
Previous diagnostic methods had limitations in spatial resolution and accuracy for complex plasma environments.

Purpose of the Study:

To develop and implement an advanced Thomson scattering apparatus for detailed plasma diagnostics.
To measure spatial profiles of electron temperature and density in the Princeton Large Torus (PLT) plasma.

Main Methods:

A novel Thomson scattering system utilizing a ruby laser, wide-angle objective, and image dissector was constructed.
A stigmatic spectrometer with a microchannel-plate image intensifier and SIT tube was employed for high-sensitivity detection.
The apparatus was designed to image a 3-mm x 900-mm laser beam onto a spectrometer input slit.

Main Results:

The system achieved accurate measurements of electron temperature and density in the range of 0.05-3 keV and 10(13)-10(14) cm(-3), respectively.
High spatial resolution was obtained, with measurements taken per 1.2-cm element along the plasma column.
The accuracy of the measurements was quantified as 30 [10(13)/N(e) (cm(-3))]((1/2))%.

Conclusions:

The developed Thomson scattering apparatus is a highly effective diagnostic for characterizing PLT plasma.
The system provides valuable data for understanding plasma behavior and improving fusion reactor designs.
This advanced diagnostic capability contributes significantly to the field of plasma physics and fusion energy development.