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PHYSICS; DATA FROM A.R. MKRTCHYAN ET AL PROVIDE NEW INSIGHTS INTO PHYSICS
News of Science
December 19, 2010
"Transition radiation from relativistic electrons is investigated
in an ultrasonic superlattice excited in a finite thickness plate,"
scientists in Yerevan, Armenia report.
"In the quasi-classical approximation, formulae are derived for
the vector potential of the electromagnetic field and for the
spectral-angular distribution of the radiation intensity. The acoustic
waves generate new resonance peaks in the spectral and angular
distribution of the radiation intensity," wrote A.R. Lazarian and
colleagues.
The researchers concluded: "The heights of the peaks can be tuned by
choosing the parameters of the acoustic wave."
Lazarian and colleagues published their study in Modern Physics
Letters B (Optical Transition Radiation In Presence Of Acoustic Waves.
Modern Physics Letters B, 2010;24(27):2693-2703).
For additional information, contact A.R. Lazarian, Institute Applied
Problems Physics, 25 Nersessian St., Yerevan 0014, Armenia.
The publisher's contact information for the journal Modern Physics
Letters B is: World Scientific Publ Co. Pte Ltd., 5 Toh Tuck Link,
Singapore 596224, Singapore.
From: A. Papazian
News of Science
December 19, 2010
"Transition radiation from relativistic electrons is investigated
in an ultrasonic superlattice excited in a finite thickness plate,"
scientists in Yerevan, Armenia report.
"In the quasi-classical approximation, formulae are derived for
the vector potential of the electromagnetic field and for the
spectral-angular distribution of the radiation intensity. The acoustic
waves generate new resonance peaks in the spectral and angular
distribution of the radiation intensity," wrote A.R. Lazarian and
colleagues.
The researchers concluded: "The heights of the peaks can be tuned by
choosing the parameters of the acoustic wave."
Lazarian and colleagues published their study in Modern Physics
Letters B (Optical Transition Radiation In Presence Of Acoustic Waves.
Modern Physics Letters B, 2010;24(27):2693-2703).
For additional information, contact A.R. Lazarian, Institute Applied
Problems Physics, 25 Nersessian St., Yerevan 0014, Armenia.
The publisher's contact information for the journal Modern Physics
Letters B is: World Scientific Publ Co. Pte Ltd., 5 Toh Tuck Link,
Singapore 596224, Singapore.
From: A. Papazian