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Chris Spencer edited Experimental Setup.tex
about 10 years ago
Commit id: ce5856e00a2387b0c95fed1e8926ad1824b99a2b
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\section{Experimental Setup}
The plasma was created by an inductively coupled RF source operating at a power of 215 W with x\textsuperscript{−3} torr Helium as the working gas.A voltage sweep was put across a langmuir probe 70 cm from the RF source 10 ms into the afterglow. A magnetic field was applied to the device through the use of two sets of four coaxial magnets created using 59.0 A and 24.5 A currents laid out around the device and resulting in a radially symmetric magnetic field through the device averaging to 63.5 Gauss along the axis.
Waves were generated in the plasma using a waveform generating antenna, in 5 different frequencies of 20Mhz to 120Mhz in 20Mhz steps.
An electric dipole reciever probe was used to measure the electric field in this experiment. Measurements for the 20Mhz data run began at -5 cm($\bold{how do i say this?}$ with 5 measurents taken in the z direction in 2 cm
steps.Angular measurements at 20 Mhz were taken 21 times in 1.3$^\circ$ steps.