A Kratos Duoplasmatron is shown mounted on the primary column insulator. A leak valve supplys oxygen to feed the plasma inside the unit. Pressure is monitored by an electrically isolated thermocouple guage.

For a detailed description of how duoplasmatrons are used in SIMS applications, a paper published in the Febuary 1995 issue of Review of Scientific Instruments is available online at the American Institute of Physics web site.

C. D. Coath and J. V. P. Long, 1994, A high-brightness duoplasmatron ion source for microprobe secondary-ion mass spectrometry, Review of Scientific Instruments, Vol. 66, No 2, Febuary 1995, pp 1018, 1023 in PDF format



A Kimball Physics Cesium Gun replaces the Kratos Duoplasmatron for analysis requiring positive ion bombarment for maximum secondary ionization.

A KPI Electron Gun is used to neutralize build up of positive charge related to cesium ion bombardment.


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