NEW LASER PHYSICS STUDY FINDINGS HAVE BEEN PUBLISHED BY G.A. AMATUNI AND COLLEAGUES
Science Letter
July 8, 2008
"A dielectric medium consisting of roughly polarized molecules has been
treated as a 3D disordered spin system (spin glass). Having in view
the study of the statistical properties of this system on a micrometer
scale and nanosecond time scale of a standing electromagnetic wave,
a microscopic approach has been developed," researchers in Yerevan,
Armenia report (see also Laser Physics).
"Using the Birkhoff ergodic hypothesis, the initial 3D spin problem is
reduced to two conditionally separate 1D problems along the external
electromagnetic field propagation. The first problem describes a
disordered N-particle quantum system with relaxation in the framework
of a Langevin-Schrodinger (L-Sch)-type equation, while the second
one describes a steric disordered spin-chain system. The statistical
properties of both systems were investigated in detail. Based on
these constructions, the coefficient of polarizability related to the
collective orientational effects was calculated. The Clausius-Mossotti
relation for the dielectric constant was generalized. Taking into
account the generalized Clausius-Mossotti relation, a generalized
equation for the dielectric permittivity function has been found,"
wrote G.A. Amatuni and colleagues.
The researchers concluded: "A simple formula was derived for the
dielectric permittivity function in the X-ray frequency range, which
can be larger than unity on the micrometer scale and nanosecond
time scale."
Amatuni and colleagues published their study in Laser Physics
(Dielectric permittivity superlattice formation. Laser Physics,
2008;18(5):608-620).
For additional information, contact G.A. Amatuni, Alikhanyan Yerevan
Physics Institute, Alikhanyan Br 2, Yerevan 375036, Armenia.
Publisher contact information for the journal Laser Physics is:
Maik Nauka, Interperiodica, Springer, 233 Spring St., New York,
NY 10013-1578, USA.