Experimental Investigations of Changes in beta-decay rate of Co-60 and Cs-137

Results of simultaneous measurements of beta-decay rate with the aid of Ge(Li)-detectors performed at two laboratories 140km apart (INR RAS, Troitsk, Co-60, and JINR, Dubna, Cs-137) during a period from 15.03.2000 till 10.04.2000, are presented. Regular deviations of the count rate of gamma-quanta following the beta-decay of $\sim$ 0.7% (INR RAS, Co-60) and $\sim$ 0.2% (JINR, Cs-137) from the statistical average, are observed. The analysis of extremum deviations of gamma-quanta count rate shows that the set of directions of tangents to the Earth's parallels of latitude at the extremum points of trajectories of motion in the space of each laboratory clearly forms three separate compact subsets of directions which agree, for two laboratories, to an accuracy of $\pm10^\circ$. This phenomenon is shown not to be explained on the basis of traditional notion. A possible explanation is suggested basing on the hypothesis that there exists a new anisotropic interaction caused by the cosmological vectorial potential \textbf{A}$_{\rm g}$, a new fundamental constant having, according to the experiments carried out, the coordinate of right ascension $\alpha \approx 285^\circ$ in the second equatorial system. This is in agreement with earlier experiments.Comment: 13 pages, LaTeX2e, 4 PS figure

Oxidation of n-С5-С8 hydrocarbons and cyclohexane in a reactor with barrier discharge. P. 2. Simulating cyclohexane oxidation reaction

Numerical model of hydrocarbon oxidation kinetics in a reactor with barrier discharge has been proposed by the example of cyclohexane oxidation reaction. The results of calculations with the use of barrier discharge surface model showed that electron energy and other discharge characteristics in pure oxygen and in the mixture of oxygen with cyclohexane vapors slightly differ that allowed using a simplified model of homogeneous discharge for simulating cyclohexane oxidation reaction. The results of calculation showed good fit with the experimental dat

The research of uranium monoxide-oxide dissolution process in nitric acid

The kinetics of concentrates of uranium monoxide-oxide dissolution process by nitric acid solutions of 5...9 mole/l in the range of 11...90 °C has been studied. It is stated that initial nitric acid concentration increasing results in some uranium dissolution degree increasing only at the first process stage. Temperature increasing significantly raises uranium dissolution degree at the first stage as well. Uranium dissolution degree increases for all studied temperatures with increasing of the process period. The main feature of the studied process is that while dissolving uranium monoxide-oxide the behavior of iron, molybdenum, silicon additives is adequate to that of uranium. The equation of the reducing sphere describes the uranium leaching process from its nitric acid concentrate

СВЕРХБЫСТРАЯ ПРОСВЕЧИВАЮЩАЯ ЭЛЕКТРОННАЯ МИКРОСКОПИЯ

Ultrafast laser spectral and electron diffraction methods complement each other and open up new possibilities in chemistry and physics to light up atomic and molecular motions involved in the primary processes governing structural transitions. Since the 1980s, scientific laboratories in the world have begun to develop a new field of research aimed at this goal. “Atomic-molecular movies” will allow visualizing coherent dynamics of nuclei in molecules and fast processes in chemical reactions in real time. Modern femtosecond and picosecond laser sources have made it possible to significantly change the traditional approaches using continuous electron beams, to create ultrabright pulsed photoelectron sources, to catch ultrafast processes in the matter initiated by ultrashort laser pulses and to achieve high spatio-temporal resolution in research. There are several research laboratories all over the world experimenting or planning to experiment with ultrafast electron diffraction and possessing electron microscopes adapted to operate with ultrashort electron beams. It should be emphasized that creating a new-generation electron microscope is of crucial importance, because successful realization of this project demonstrates the potential of leading national research centers and their ability to work at the forefront of modern science.Методы сверхбыстрой электронной дифракции, лазерной спектроскопии и квантовой химии, дополняя друг друга, открывают новые возможности изучения внутримолекулярной динамики веществ, участвующих в процессах химических реакций. Переходное состояние химических реакций определяет направление этих процессов. Начиная от первых работ 1980-х годов, выполненных в России и показавших принципиальную возможность исследования когерентной динамики ядер молекулярных систем, многие научные лаборатории в мире начали интенсивную разработку новой области исследований, направленную на экспериментальное исследование переходного состояния методом сверхбыстрой дифракции электронов. Последовательное развитие этого направления привело к созданию так называемого “атомно-молекулярного кино”, позволяющего визуализировать когерентную динамику ядер в молекулах и сверхбыстрые процессы в химических реакциях в режиме реального времени. В настоящее время ряд научно-исследовательских лабораторий в мире разрабатывают методы сверхбыстрой дифракции электронов и рентгеновского излучения, которые открыли возможность исследования переходного состояния химических реакций. Создание электронных микроскопов с высоким пространственно-временным разрешением является новым направлением в электронной микроскопии, близко примыкающим к этому новому направлению науки. Успешная реализация этого направления исследований демонстрирует потенциал ведущих национальных научно-исследовательских центров и их способность работать на переднем крае современной науки