Наукова електронна бібліотека
періодичних видань НАН України
періодичних видань НАН України
On charged impurity structures in liquid helium
Репозиторій DSpace/Manakin
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On charged impurity structures in liquid helium
Тема:
Низкотемпературная физика пластичности и прочности
Інший ID:
PACS: 78.60.Kn, 78.67.Bf, 36.40.Wa, 72.20.Jv
Посилання:
On charged impurity structures in liquid helium / A.A. Pelmenev, I.N. Krushinskaya, I.B. Bykhalo, R.E. Boltnev // Физика низких температур. — 2016. — Т. 42, № 3. — С. 289–296 . — Бібліогр.: 57 назв. — англ.
Підтримка:
The work has been done under support of the Russian
Science Foundation (grant #14-50-00124) in Joint Institute
for High Temperatures.
Дата:
2016
Переглядів:
701
Завантажень:
620
Анотація:
The thermoluminescence spectra of impurity-helium condensates (IHC) submerged in superfluid helium have
been observed for the first time. Thermoluminescence of impurity-helium condensates submerged in superfluid
helium is explained by neutralization reactions occurring in impurity nanoclusters. Optical spectra of excited
products of neutralization reactions between nitrogen cations and thermoactivated electrons were rather different
from the spectra observed at higher temperatures, when the luminescence due to nitrogen atom recombination
dominates. New results on current detection during the IHC destruction are presented. Two different mechanisms
of nanocluster charging are proposed to describe the phenomena observed during preparation and warmup
of IHC samples in bulk superfluid helium, and destruction of IHC samples out of liquid helium.
