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Vol 44, No 1 (2017)
- Year: 2017
- Articles: 7
- URL: https://journals.rcsi.science/1068-3356/issue/view/14088
Article
Dual-wavelength generation at the transverse mode locking in a diode-end-pumped passively Q-switched Nd:YLF/Cr4+:YAG laser
Abstract
A dual-wavelength generation at 1047 and 1053 nm is implemented in a diode-endpumped Nd:YLF laser Q-switched by Cr:YAG. This generation is obtained by the tuning of the cavity length near the regions of the transverse-mode degeneracy.
1-4
Fiber-optic delay line using multicore fiber
Abstract
A fiber-optic delay line based on a multicore optical fiber is fabricated for the first time. Due to the optical pulse sequential passage over all cores, the time delay of the optical signal of 45.0 μs is obtained at the optical fiber length of only 1300 m. The use of the seven-core optical fiber allows a sevenfold reduction in the used fiber length in comparison with single-core fibers, which is promising for developing lines with long signal delays.
5-7
The use of Higgs boson production process for optimization of hadron calorimeter segmentation
Abstract
A new approach to the determination of the optimum transverse segmentation of the hadron calorimeter using the Higgs boson production process via the vector boson fusion mechanism is considered. Monte Carlo simulation results are presented for the hadron calorimeter which will be installed after the modernization of 2023 in the Compact Muon Superdetector collaboration at the Large Hadron Collider of the CERN.
8-12
Laser emission efficiency of semiconductor target of gas diode in the picosecond range
Abstract
Laser radiation excited in a cadmiumsulfide semiconductor target (ST) (λ = 522 nm) by a high-intensity subnanosecond electron beam (EB) with an energy of 70–150 keV has a maximum intensity of 3 · 107W/cm2 at an efficiency of~10%. Lasing arose at the EB exciting pulse front. The laser radiation pulse shape reproduced the EB pulse shape.
13-16
Strongly nonlinear ion-acoustic soliton with relativistic electrons
Abstract
The one-dimensional non-relativistic ion-acoustic soliton capable of trapping relativistic electrons described by the Maxwell–Jüttner distribution is considered in themodel of plasma with cold ions. It is shown that the solutions obtained are intermediate between R. Z. Sagdeev soliton (1964) and A.V. Gurevich soliton (1968).
17-20
Comparative analysis of image reconstruction algorithms of the ASL and CASA software packages
Abstract
The ASL software package for processing radio interferometric observations, developed by the Astro Space Center of the Lebedev Physical Institute, is briefly reviewed. The results of the comparison of image reconstruction algorithms of ASL and CASA programs are presented. For comparison, the ALMA telescope observations of the gravitational lensing effect are used.
21-24
Some features in the angular divergence of relativistic electron beams reflected and refracted by foil
Abstract
The horizontal and vertical angular divergences of relativistic electron beams passing through a foil and reflected by a foil are experimentally measured. The effect of the angle between the electron beam and the foil plane on the intensity and angular divergence of beams is studied. The interaction of particles with a copper foil 50 μm thick and aluminum foil 200 μm thick is studied. A microtron with a particle energy of 7.4 MeV is used as an electron source.
25-28