A Microwave Slab Line Cavity for the Excitation of Electrodeless Discharge Tubes

Abstract

A new form of microwave cavity, operating at 2.45 GHz, is described for use with electrodeless discharge tubes. The size and electrical operating conditions of the cavity may be changed readily. The second spectrum of helium, neon and argon has been strongly excited, using a sealed low pressure electrodeless discharge tube, in the new cavity.

Identification of the 4d105p61S0Level in Xe III Using Optical Spectroscopy

“…Of Xe 11 and Xe 111. Exposures in the VUV have been made at the Zeeman Laboratory using a microwave excited plasma [8] as light source while exposures in the same region have been we have been engaged in a new experimental study In 1972, Werme et al [ l ] reported on observations of an Auger spectrum of Xe following ionization in the 4d shell and proposed that two strong Auger transitions, with an energy difference equal to the 4d9 5s25p6 2D3/2,5/2 spin-orbit splitting, could be identified as transitions to the then unknown 4d1°5p6 'So level. The kinetic energies?…”

Some observations on the slab-line cavity developed for the excitation of electrodeless discharge sources

“…The power incident on the cavity was determined from the SWI measurements and not from the magnetron current since (a) the magnetron output power was found to be sensitive to the amplitude and phase of the wave reflected from the loaded cavity, and (b) the tuner unit, when used between the magnetron and SWI, had the effect of increasing the apparent power incident on the cavity. Accompanying spectroscopic measurements were also made and these have been reported briefly by Hammond and Outred (1976) and in more detail by Hammond (1978).…”

Microwave discharges at low pressures and peculiarities of the processes in strongly non-uniform plasma

“…Hammond and Outred [72] describe a simple design of the plasma generator based on a rectangular cavity opened on one side and excited by antenna, ending at the surface of the discharge tube (figure 5(e)).…”

“…To provide the output of the light emission the lamps should be equipped with nonsolid shields or special slits. An opened microwave cavity for light sources was described in [72] (figure 5(e)).…”