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1.
V. I. Prokhorenko 《Proceedings of the Steklov Institute of Mathematics》2007,259(2):149-166
This paper is concerned with the applied problem of choosing long-living orbits of artificial Earth satellites whose evolution
under the influence of gravitational perturbation from the Moon and the Sun may result in the collision of the satellite with
the central body, as was shown by M.L. Lidov for the well-known example of “Vertical Moon.” We use solutions of the completely
integrable system of evolution equations obtained by Lidov in 1961 by averaging twice the spatial circular restricted three-body
problem in the Hill approximation. In order to apply the integrability of this problem in practice, we study the foliation
of the manifold of levels of first integrals and the change of motion under crossing the bifurcation manifolds separating
the foliated cells. As a result, we describe the manifold of initial conditions under which the orbit evolution leads to an
inevitable collision of the satellite with the central body. We also find a lower bound for the practical applicability of
the results, which is determined by the presence of gravitational perturbations caused by a polar flattening of the central
body.
Original Russian Text ? V.I. Prokhorenko, 2007, published in Trudy Matematicheskogo Instituta imeni V.A. Steklova, 2007, Vol.
259, pp. 156–173. 相似文献
2.
3.
VI. Sedláček 《Czechoslovak Journal of Physics》1988,38(5):465-469
The formation of slip bands is the main mechanism of cyclic deformation in pure Al. Their density, orientation and heights in polycrystalline Al were investigated during cycling. Types, sizes and densities of precipitates are responsible for the mode of cyclic deformation in AlCu4 pure alloy. In technical Al alloys intermetallic phases have detrimental effects on deformation homogeneity and largely govern the fatigue mechanism of the material and especially microcrack initiation. 相似文献
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5.
N. V. Dalakova K. M. Elekoeva A. Z. Kashezhev A. R. Manukyants M. Kh. Ponegev A. D. Prokhorenko V. A. Sozaev 《Bulletin of the Russian Academy of Sciences: Physics》2014,78(4):337-339
Polytherms of the angles of wetting by Sn-Sr melts for aluminum films on silicon are investigated by the sessile drop method in helium. Such melts are promising for use as lead-free solders in electronics. It is found that the photon annealing of films enhances their wetting. Wetting thresholds are found at temperatures of >850 K for tin-strontium melts spreading over the surfaces of aluminum films on silicon that are preliminarily processed by photon annealing for 4 s. 相似文献
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8.
Victoria I. Prokhorenko 《Functional Analysis and Other Mathematics》2011,3(2):135-167
We consider the problem of initial conditions that lead to the intersection of a satellite orbit with planetocentric sphere of a radius R. The problem is considered in frame of the satellite version of the double-averaged restricted three body problem with taking into account gravitational perturbations caused by the polar oblateness of the planet. For some integrable cases we provide the boundaries of the manifolds of the initial orbital elements leading (or not leading) to the intersection of the satellite orbit with the planet surface. 相似文献
9.
V. I. Prokhorenko 《Proceedings of the Steklov Institute of Mathematics》2007,259(1):149-166
This paper is concerned with the applied problem of choosing long-living orbits of artificial Earth satellites whose evolution under the influence of gravitational perturbation from the Moon and the Sun may result in the collision of the satellite with the central body, as was shown by M.L. Lidov for the well-known example of “Vertical Moon.” We use solutions of the completely integrable system of evolution equations obtained by Lidov in 1961 by averaging twice the spatial circular restricted three-body problem in the Hill approximation. In order to apply the integrability of this problem in practice, we study the foliation of the manifold of levels of first integrals and the change of motion under crossing the bifurcation manifolds separating the foliated cells. As a result, we describe the manifold of initial conditions under which the orbit evolution leads to an inevitable collision of the satellite with the central body. We also find a lower bound for the practical applicability of the results, which is determined by the presence of gravitational perturbations caused by a polar flattening of the central body. 相似文献
10.
Prokhorenko VI Halpin A Johnson PJ Miller RJ Brown LS 《The Journal of chemical physics》2011,134(8):085105
Coherent control protocols provide a direct experimental determination of the relative importance of quantum interference or phase relationships of coupled states along a selected pathway. These effects are most readily observed in the high intensity regime where the field amplitude is sufficient to overcome decoherence effects. The coherent response of retinal photoisomerization in bacteriorhodopsin to the phase of the photoexcitation pulses was examined at fluences of 10(15) - 2.5 ×?10(16) photons per square centimeter, comparable to or higher than the saturation excitation level of the S(0) - S(1) retinal electronic transition. At moderate excitation levels of ~6 ×?10(15) photons/cm(2) (<100 GW/cm(2)), chirping the excitation pulses increases the all-trans to 13-cis isomerization yield by up to 16% relative to transform limited pulses. The reported results extend previous weak-field studies [Prokhorenko et al., Science 313, 1257 (2006)] and further illustrate that quantum coherence effects persist along the reaction coordinate in strong fields even for systems as complex as biological molecules. However, for higher excitation levels of ~200 GW/cm(2), there is a dramatic change in photophysics that leads to multiphoton generated photoproducts unrelated to the target isomerization reaction channel and drastically changes the observed isomerization kinetics that appears, in particular, as a red shift of the transient spectra. These results explain the apparent contradictions of the work by Florean et al. [Proc. Natl. Acad. Sci. U.S.A. 106, 10896 (2009)] in the high intensity regime. We are able to show that the difference in observations and interpretation is due to artifacts associated with additional multiphoton-induced photoproducts. At the proper monitoring wavelengths, coherent control in the high intensity regime is clearly observable. The present work highlights the importance of conducting coherent control experiments in the low intensity regime to access information on quantum interference effects along specific reaction coordinates. 相似文献