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                                 Abstract:A Simple Mirror Ion Source with 75GHz pumping (SMIS 75) has been created. The confinement system is a mirror trap with magnetic field in the plug up to 5T, variable length 15—20cm and mirror ratio 3—5. The plasma of metal ions is injected into the trap by a special vacuum arc minigun. Plasma heating is performed by the microwave radiation of a gyrotron (the frequency of 75GHz, power up to 200kW, pulse duration up to 150μs). The results of the experiment have demonstrated substantial multiple ionization of metal ions. For a metal with high melting temperature (Pt), heating shifts the average ion charge from Pt2+ up to Pt7+. Maximum stripped observed ion is Pt10+. Total current of ion beam is about 300mA.
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                        References
	
			| [1] | . Vodopyanov A V, Golubev S V, Razin S V et al. Multiple ionization of metal ions by ECR heating of electrons in vacuum arc plasmas // Review of Scienti c Instruments,2004, 75: 18882. Vodopyanov A V, Golubev S V, Mansfeld D A et al. Multiple ionization of metal ions by ECR heating of electrons in vacuum arc plasmas // Proceedings of 16th International Workshop on ECR Ion Sources, 2004. Berkley, USA p. 1163. Vodopyanov A V, Golubev S V, Mansfeld D A et al. Generation of multicharge ions of refractory metals in ECR discharge in a simple mirror trap. // Zh. Tekhn. Fiz., 2005,75(issue 9): 1014. Anders A, Yushkov G Yu. Ion flux from vacuum arc cathode spots in the absence and presence of a magnetic field// Journal of Applied Physics, 2002, 91(8): 4824-48325. Lotz W. Zeit. fur Phys., 1968, 216: 241 |  
 
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