I saw jumps of He and Ne atoms when studied dynamics of solid solutions of He and Ne in ice II. George Malenkov

actually, I found that on metalloprotein MD simulation.

Behaviour of He and Ne dissolved in water at rather high temperatures are practicakky the same/ I never tied to simulate liquid He at the temperatures close to 0K

How can I show the pictures of He or Ne jumps in ice II&

Prof George, if you don't mind. Please upload your picture or paper. Just click attach the file in this column.

Thanks, Prof.

My paper will be published in Russian Journal of Structural Chemistry. Here is one of the pictures, taken from my talk/ George Malenkov

Thanks, Prof Malenkov.

Two more pictures from my talk.  Long jump - neon atom jumped not the neighbour cavity in ice II structure, but to a next one/ Jumps of noble gas atoms in solid solution are the only systems where the jumps occur very often. In the liquids they are observed rather seldom. I call them "slow jumps". See Fig 19, 20, 21 in the attache paper.

yeah get it, i will read it.

i get it. i think from your answer, jump motion is an anomaly(s) in MD simulation graphic

Yes, if it's a mater of liquids. 

thanks prof. Malenkov