A study of a helium-jet ion guide for an on-line isotope separator

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Abstract

A new method based on helium-jet techniques permits primary recoil ions, produced in radioactive decay or in nuclear reactions to be run directly through a mass separator. Results obtained with a 227Ac source promise qualities complementary with those obtained with conventional ion sources and indicate an overall efficiency of the order of 10%. Preliminary results with 20Na recoils from the 20Ne(p,n)-reaction indicate that most of the ionic species transported out from the target chamber are negatively charged.

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