Observations and Simulations of Tin Plasmas Formed by CO2 Laser Pulses

This is the experimental and simulation data associated with an article submitted to Physics of Plasmas. It contains two folders and one data file. 

Folder #1: dual probe csv files

This folder contains the data from a complete experimental run with two probes in the chamber.

Each csv file has 4 columns of data from Row 22.

Column 1 contains the time data.

Column 2 contains the laser pulse data

Column 3 contains the planar probe data

Column 4 contains the wire probe data

Please note that the planar probe is positioned only at 100 mm, 80 mm, 60 mm, 40 mm and 20 mm from the target, while the wire probe is positioned at a greater range of distances from the target.

Please see the data naming convention below which explains how to determine the distance of each probe from the target for each data file.

Folder #2: planar probe csv files

This folder contains the data from a complete experimental run with the planar probe inside the chamber.

Each csv file has 3 columns of data from Row 22.

Column 1 contains the time data.

Column 2 contains the laser pulse data

Column 3 contains the planar probe data

Please note that the planar probe is positioned a range of distances from the target.

Please see the data naming convention below which explains how to determine the distance of the probe from the target for each data file.

File: complete_541ns.plt

This is a text file which contains the simulation data for a range of parameters which were outputted from the 541 ns simulation at different edit times. All units are cgs.

Data Naming Convention

As each data sample was taken, it was important to name the saved correlated files in line with a strict convention, which would later enable the analysis of concomitant data sets and the proper association of probe-response with laser voltage and probe distances. Periods were avoided within the naming convention to avoid subsequent potential software conflicts.

The naming convention selected contained reference to the following (see Figure 1).

The base position of the probe: from 100 mm to 20 mm in steps of 20 mm. (In the dual probe csv files, the planar probe is held at this base position)

The bias on the probe:  ±15 V.

The laser driving voltage: 22.5 kV, 25.0 kV, 27.5 kV.

The actuator offset. In Figure 1, posn120 indicates that the probe has been moved 12 mm towards the target, closer than its starting position 020 mm i.e. it is 8 mm from the target. (The wire probe moves with this offset in the dual probe csv files. The planar probe moves with this offset in the planar probe csv files.)

The sequence number of the shot within the group.

e.g. : 020mm_pos15_27-5kV_posn120_003.csv

Questions for clarification may be directed to Frank McQuillan at [phone], or [e-mail].