S. Cohen, T.O. Sedgwick, et al.
MRS Proceedings 1983
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. © Springer-Verlag 1997.
S. Cohen, T.O. Sedgwick, et al.
MRS Proceedings 1983
P. Martensson, R.M. Feenstra
Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Heinz Schmid, Hans Biebuyck, et al.
Journal of Vacuum Science and Technology B: Microelectronics and Nanometer Structures
A. Reisman, M. Berkenblit, et al.
JES