Abstract

The properties of a gas-catcher/ion guide system, connected to a mass separator at the Heavy Ion Laboratory of Warsaw University, were investigated by using the α -decay recoil products 219 Rn and 215 Po, obtained from a 223 Ra source. The “plasma effect” was studied by using a 14 N beam with intensities ranging from 7 to 64 particle⋅nA, which correspond to power depositions between 1.6 ⋅ 10 16 and 7.2 ⋅ 10 17 eV/s for helium pressures of 75 and 380 hPa, respectively.

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