Operational test of micro-oven for 48Ca beam

Ozeki, K.; Kageyama, T.; Kidera, M.; Higurashi, Y.; Nakagawa, T.
February 2014
Review of Scientific Instruments;2014, Vol. 85 Issue 2, p1
Academic Journal
In order to supply a high-intensity and stable 48Ca beam from the RIKEN 18-GHz electron cyclotron resonance ion source, we are conducting operational tests of a micro-oven. A mixture of CaO and Al powders is placed into the crucible of the micro-oven and heated to produce metallic calcium by a reductive reaction. The successful production of a calcium beam was confirmed. In addition, we reduced the material consumption rate by using a so-called "hot liner," and we enhanced the beam intensity by applying a negative voltage bias to the micro-oven, the effect of which is similar to the effect of a "biased disk."


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