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1.
Balakin V Alexandrov VA Mikhailichenko A Flöttmann K Peters F Voss G Bharadwaj V Halling M Holt JA Buon J Jeanjean J LeDiberder F Lepeltier V Puzo P Heimlinger G Settles R Stierlin U Hayano H Ishihara N Nakayama H Oide K Shintake T Takeuchi Y Yamamoto N Bulos F Burke D Field R Hartman S Helm R Irwin J Iverson R Rokni S Roy G Spence W Tenenbaum P Wagner SR Walz D Williams S 《Physical review letters》1995,74(13):2479-2482
2.
A. A. Balakin V. A. Mironov S. A. Skobelev 《Journal of Experimental and Theoretical Physics》2017,124(1):49-56
The self-action of two-dimensional and three-dimensional Bessel wave packets in a system of coupled light guides is considered using the discrete nonlinear Schrödinger equation. The features of the self-action of such wave fields are related to their initial strong spatial inhomogeneity. The numerical simulation shows that for the field amplitude exceeding a critical value, the development of an instability typical of a medium with the cubic nonlinearity is observed. Various regimes are studied: the self-channeling of a wave beam in one light guide at powers not strongly exceeding a critical value, the formation of the “kaleidoscopic” picture of a wave packet during the propagation of higher-power radiation along a stratified medium, the formation of light bullets during competition between self-focusing and modulation instabilities in the case of three-dimensional wave packets, etc. In the problem of laser pulse shortening, the situation is considered when the wave-field stratification in the transverse direction dominates. This process is accompanied by the self-compression of laser pulses in well enough separated light guides. The efficiency of conversion of the initial Bessel field distribution to two flying parallel light bullets is about 50%. 相似文献
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Conclusions Rate constants for the reaction of the excess electron with electronically excited acceptor molecules in liquid hydrocarbons have been obtained for the first time through direct measurements.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 5, pp. 989–992, May, 1979. 相似文献
6.
Alexander?B.?Balakin Winfried?ZimdahlEmail author 《General Relativity and Gravitation》2005,37(10):1731-1751
The material tensor of linear response in electrodynamics is constructed out of products of two symmetric second rank tensor
fields which in the approximation of geometrical optics and for uniaxial symmetry reduce to “optical” metrics, describing
the phenomenon of birefringence. This representation is interpreted in the context of an underlying internal geometrical structure
according to which the symmetric tensor fields are vectorial elements of an associated two-dimensional space. 相似文献
7.
A. A. Balakin A. G. Litvak V. A. Mironov S. A. Skobelev 《Journal of Experimental and Theoretical Physics》2007,104(3):363-378
Self-focusing dynamics of electromagnetic pulses of arbitrary duration is analyzed numerically and analytically. The wave-field evolution is considered by the wave equation in the reflectionless approximation under quite general assumptions about the dispersion of the medium. Methods for qualitative investigation of the self-focusing dynamics of quasimonochromatic radiation are generalized to the case of wave packets with the length of a few oscillation periods. In particular, sufficient conditions for collapse and many other integral relations are obtained by the momentum method. A self-similar-type transformation is used to show that new structural features are primarily associated with the nonlinear dispersion of the medium (with the dependence of the group velocity of a wave packet on its amplitude). Numerical analysis confirms that the self-focusing of radiation is preceded by an increase in the steepness of the longitudinal profile. 相似文献
8.
Alexander Balakin Heinz Dehnen Alexei Zayats 《General Relativity and Gravitation》2008,40(12):2493-2513
Non-minimal interactions in the pp-wave Einstein–Yang–Mills–Higgs (EYMH) model are shown to give rise to color cross-effects
analogous to the magneto-electricity in the Maxwell theory. In order to illustrate the significance of these color cross-effects,
we reconstruct the effective (associated, color, and color-acoustic) metrics for the pp-wave non-minimal seven-parameter EYMH
model with parallel gauge and scalar background fields. Then these metrics are used as hints for obtaining explicit exact
solutions of the non-minimally extended Yang–Mills and Higgs equations for the test fields propagating in the vacuum interacting
with curvature. The influence of the non-minimal coupling on the test particle motion is interpreted in terms of the so-called
trapped surfaces, introduced in the Analog Gravity theory. 相似文献
9.
A. A. Balakin A. G. Litvak V. A. Mironov S. A. Skobelev 《Journal of Experimental and Theoretical Physics》2011,112(3):504-510
The development of the spatiotemporal (filamentation) instability of a laser pulse upon excitation of a plasma wave is studied
numerically and analytically. It is shown that first, as in a medium with inertialless cubic nonlinearity, the filamentation
of radiation occurs and then filaments are attracted to each other. The following evolution differs weakly from the evolution
of a smoothed wave beam in a medium with inertial nonlinear response. 相似文献
10.
Using an electromembrane source, mass-spectrometric investigations into the field evaporation of ions from KI solutions in
a water-glycerol mixture and in ethylene glycol are performed. The concentration of negatively charged solvent ions (deprotonated
molecules) on the emitting surface of the liquid is determined. It is shown that, under the conditions of intense field evaporation
of ions, the surface concentration of deprotonated glycerol and ethylene glycol molecules is several orders of magnitude higher
than their equilibrium concentration in the absence of an electric field. The high concentration of solvent ions is associated
with an increase in the autoprotolysis constant in a strong electric field. 相似文献