On the free rotation of a molecule embedded in helium-4 clusters
Abstract
The fact, that
4
He atoms on different concentric circular paths around the axis of a quantum vortex move with identically equal angular momentum, which represents an important aspect of superfluidity of He-II, has been used to discover a model which can explain the {\it typical nature} of experimentally observed
N
(number of
4
He
atoms) dependence of the rotational constant (
B
) of the rotor part of a cluster M:He
N
. It reveals how exactly superfluidity is related to the said dependence of
B
on
N
. We believe that this model, when used with simulation techniques, would render results that would agree closely with experiments.