Considerations in the design of a microwave induced plasma utilizing the TM010 cavity for optical emission spectroscopy

Annular-Shaped Microwave-Induced Nitrogen Plasma at Atmospheric Pressure for Emission Spectrometry of Solutions

“…The cavity (excitor) and plasma torch (discharge tube) design make it difficult to increase the microwave energy coupled to the plasma and the annular-shaped plasma production. [11][12][13][14] Recently, a circularly polarized wave mode excitor, which facilitates the production of a high-power (>_1 kW) annularly shaped argon plasma was reported. 15 Preliminary results indicated that detection limits comparable to those reported for the ICP are possible.…”

Spectroscopic Study of Microwave Induced Plasma

“…The spatial plasma distortion, which would occur using a single discharge tube for analyte gas flow, is eliminated by the use of Mini MIP torch discharge tube system, similar to the tangential flow MIP torch reported by Bollo-Kamara et al [11]. Their torch, constructed entirely from quartz, utilizes a concentric tube arrangement with a thread insert to generate a tangential support gas flow.…”

“…Their torch, constructed entirely from quartz, utilizes a concentric tube arrangement with a thread insert to generate a tangential support gas flow. The windings of the cooper wire are the same as the Bollo-Kamara [11] threaded insert. The Mini-MIP-Torch also uses two concentric tubes, but made of Al oxide [12], separated by the cooper wire.…”

Plasma optical emission and mass spectrometry

“…In swfatron Figure 6-6. Also by the use of multitube torches with threaded inserts a toroidal plasma could be obtained [49]. MIPS operated in a resonator according to Beenakker are very weak plasmas with respect to their atomization capacity.…”