A new file has been added to the downloads section that details the construction of a triple probe for use in plasma physics experiments.

Triple probes, a specific type of Langmuir probe, are used to simultaneously measure the electron density and temperature in plasmas. Probes are limited to use in plasmas for which the temperature (energy density) is not high enough to destroy the probe. In the LArge Plasma Device (LAPD) laboratory these temperatures are on the order of 0.5 - 8 eV (~ 92,000 K or 165,000 degrees F). Sample data from the probe described is shown below.

Typical density and temperature traces from the triple probe.

The file is located in the Plasma Laboratory - Data Acquisition and Analysis section of the downloads page as LAPD Probe Construction

Tags: Langmuir probe, plasma diagnostics, experimental plasma physics