Low Temperature Physics: 44, 1085 (2018); https://doi.org/10.1063/1.5055856
Fizika Nizkikh Temperatur: Volume 44, Number 10 (October 2018), p. 1380-1385    ( to contents , go back )

Bubble states of atoms in liquid helium

A.M. Dyugaev1 and E.V. Lebedeva2

1Landau Institute for Theoretical Physics, Chernogolovka 142432, Russia

2Institute of Solid State Physics, Russian Academy of Sciences 2 Academician Ossipyan Str., Chernogolovka 142432, Russia
E-mail: lebedeva@issp.ac.ru
pos Анотація:

Received March 21, 2018, published online August 28, 2018

Abstract

Solvation of impurity atoms {Na, K, Rb, Cs, Mg, Ca, Sr, Ba} with small ionization energy in liquid helium is studied. It is shown that unmatched interaction of impurity atom and helium atom is of importance for definition of characteristics of helium state. The size of bubble state R0 is determined by the strong repulsion between helium atoms and valent electrons of impurity atoms. The value of R0 is universal, and expression 2R0/ν = const ≈ 11–13 depends on the place of impurity atom in periodic table. Parameter ν is specified by the value of ionization energy of impurity J = 1/2ν2 (a.u.), its value has mining of impurity atom’s size. Energy barrier, which divides bulk and surface states of impurity atom, is calculated.

Key words: impurity atoms in liquid helium, solvation energy, bubble states.

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