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A new selected ion drift tube mass spectrometer, which has been developed for ion swarm experiments at very low temperature, is presented. Gas temperature of 2 K in the drift tube as the lowest one for this apparatus is achieved by liquid helium cooling. Details of techniques in the low temperature experiment, which are concerned in the development of this apparatus, is discussed. Preliminary experiments have been carried out in measurements of drift velocity of He+ ions in He gas at 4.3 and 2 K.
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Tanuma et al. (2000) studied this question.
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