Ions and atoms in superfluid helium (4He) |
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Authors: | M Foerste H Guenther O Riediger J Wiebe G zu Putlitz |
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Institution: | 112. Physikalisches Institut der Universit?t Heidelberg, Philosophenweg 12, D-69120, Heidelberg, Germany
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Abstract: | New experimental results for mobilities in superfluid helium of the alkali earth ions Be+, Mg+, Ca+, Sr+ and Ba+ in the temperature region from 1.27 up to 1.66 K are reported. Surprisingly, the temperature dependence of the Be+ ion mobility, measured here for the first time, is more similar to that of the He+ ion than to the heavier alkali earth ions. This behavior may suggest a snowball like structure for the defect around Be+ in contrast to the bubble like defects around the heavier alkali earth ions. |
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