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101.
102.
A kinetic model to predict nucleation rates in the sulfuric acid-water system is presented. It allows calculating steady-state nucleation rates and the corresponding time lag, using a direct solution of a system of kinetic equations that describe the populations of sub- and near-critical clusters. This kinetic model takes into account cluster-cluster collisions and decay of clusters into smaller clusters. The model results are compared with some predictions obtained with the classical nucleation theory (CNT) and also with available measurement data obtained in smog chambers or flow tubes. It is shown that in the case of slow nucleation processes, the kinetic model and the CNT as used by Shugard et al. [J. Chem. Phys. 75, 5298 (1974)] give the same results. However, in the case of intensive nucleation, a large part of the nucleation flux is due to cluster-cluster collisions and the CNT underestimates the nucleation rates. 相似文献
103.
104.
N.I. Sorokin V.I. Makarov N.L. Lavrik Yu.M. Gusev G.I. Skubnevskaya N.M. Bazhin Yu.N. Molin 《Chemical physics letters》1981,78(1):8-12
The magnetic field and pressure effects in the photolysis of deuteroformaldehyde and sulfur dioxide in the near ultra-violet reagion have been investigated. A two-level model is proposed to interpret the results obtained. 相似文献
105.
106.
The reaction 6Li (e, e′p)5He has been investigated with a resolution good enough to distinguish the effects of the s- and p-shells of the 6Li nucleus. The reaction cross section has been measured as a function of the missing energy from −15 to +30 MeV. The proton angular distribution has been measured at missing energies of 4 and 20 MeV. The comparison of the data with calculations within the framework of the plane-wave impulse approximation gives the harmonic oscillator parameters qp = 50 ± 5 MeV/c,qs = 108 ± 9 MeV/c. 相似文献
107.
108.
109.
We obtain the solution to the equations of motion for a classical particle with spin, electric and magnetic charges, and electric and magnetic normal and anomalous moments, in the field of a plane electromagnetic wave. An explicit form of the solution is given for linearly polarized waves and monochromatic circularly polarized waves. The possibility is noted that due to the presence of the moments, the particle can be accelerated to speeds arbitrarily close to the speed of light.Translated from Izvestiya Vysshykh Uchebnykh Zavedenii, Fizika, No. 11, pp. 71–74, November, 1981. 相似文献
110.
V. F. Tarasenko E. Kh. Baksht A. G. Burachenko M. I. Lomaev D. A. Sorokin Yu. V. Shut’ko 《Technical Physics》2010,55(6):904-907
Switchover from a runaway-electromnduced volume discharge to a spark is studied when a nanosecond discharge is initiated in
high-pressure nitrogen an d air at a voltage of 50–250 kV. In the case of a cathode with a small radius of curvature and a
flat anode and in the presence of cathode spots, the leader of the spark channel may propagate from the flat cathode. When
the rate of rise of the voltage across centimeterwide gaps is high (dU/dt ∼ 1015 V/s or higher), cathode spots in the case of a corona discharge emerge within 200 ps. 相似文献