Standard Rectangular Waveguides

An oscilloscope and a camera were used to record the output voltage of die crystal detector. The oscilloscope was triggered from the ionization switch probe by the detonation and a dielectric rod waveguide (such as described in Ref 18a) was used as a transmission line between the instrumentation and the sample. The dielectric rod waveguide was expandable and acted as a mode selector to launch a pure mode of transmission in the sample. The location of sample, detonator and ionization switch are shown in Fig 30. The standard rectangular waveguide from the instrumentation shown in Fig 29 was converted to circular waveguide by a transition. A polystyrene rod... 

The dimensions of standard rectangular waveguides are given in Table 4.5. 

Figure 2. Two microwave cavity configurations which have been used in these experiments. Upper rectangular TEt 0 2 mode in standard X-band waveguide lower cylindrical, radially symmetric TEflll mode. Both use a Mylar film ana stopcock grease for a vacuum seal and the upper has an additional 0 -ring seal. Irradiation is from above in both cases...

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