1,039 research outputs found
Features of Perception of Interpersonal Interaction Situations
У статті визначено узагальнювальні фактори оцінки ситуацій міжособистісної взаємодії, реконструйовано категоріальну структуру суб’єкта, що обумовлює сприйняття та аналіз ситуацій, пов’язаних з навчальним процесом студентів. The author identifies generalized factors assessing the situations of interpersonal interaction. The categorial structure of subjects reconstruction, which determines the perception and analysis of situations connected with the students’ educational process is considered in the article
Relativistic description of asymmetric fully heavy tetraquarks in the diquark-antidiquark model
Masses of the ground, orbitally and radially excited states of the asymmetric
fully heavy tetraquarks, composed of charm (c) and bottom (b) quarks and
antiquarks are calculated in the relativistic diquark-antidiquark picture. The
relativistic quark model based on the quasipotential approach and quantum
chromodynamics is used to construct the quasipotentials of the quark-quark and
diquark-antidiquark interactions. These quasipotentials consist of the
short-range one-gluon exchange and long-distance linear confinement
interactions. Relativistic effects are consistently taken into account. A
tetraquark is considered as a bound state of a diquark and an antidiquark which
are treated as a spatially extended colored objects and interact as a whole. It
is shown that most of the investigated tetraquarks states (including all ground
states) lie above the fall-apart strong decay thresholds into a meson pair. As
a result they can be observed as wide resonances. Nevertheless, several
orbitally excited states lie slightly above or even below these fall-apart
thresholds, thus they could be narrow states.Comment: 24 pages, 1 figur
Optically-stimulated desorption of 'hot' excimers from pre-irradiated Ar solids
Electronically-induced desorption from solid Ar pre-irradiated by a
low-energy electron beam was investigated by activation spectroscopy methods -
photon-stimulated exoelectron emission and photon-stimulated luminescence in
combination with spectrally-resolved measurements in the VUV range of the
spectrum. Desorption of vibrationally excited argon molecules Ar2^*(v) from the
surface of pre-irradiated solid Ar was observed for the first time. It was
shown that desorption of 'hot' Ar2^*(v) molecules is caused by recombination of
self-trapped holes with electrons released from traps by visible range photons.
The possibility of optical stimulation of the phenomenon is evidenced.Comment: The complete version of the paper will be published in Fiz. Nizk.
Temp. (Low Temp. Phys.
Hard-core Radius of Nucleons within the Induced Surface Tension Approach
In this work we discuss a novel approach to model the hadronic and nuclear
matter equations of state using the induced surface tension concept. Since the
obtained equations of state, classical and quantum, are among the most
successful ones in describing the properties of low density phases of strongly
interacting matter, they set strong restrictions on the possible value of the
hard-core radius of nucleons. Therefore, we perform a detailed analysis of its
value which follows from hadronic and nuclear matter properties and find the
most trustworthy range of its values: the hard-core radius of nucleons is
0.30--0.36 fm. A comparison with the phenomenology of neutron stars implies
that the hard-core radius of nucleons has to be temperature and density
dependent.Comment: 12 pages, 4 figures, references added, typos correcte
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