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The populations of the 1s, 2p, and 3p levels of krypton have been determined. The electrical parameters of the glow discharge have been measured by the two-probe method. The oscillator strengths of 13 spectral lines of krypton were determined in the visible and near-infrared portions of the spectrum. Some conclusions are drawn regarding the character of excitation of the 2p and 3p levels of krypton.In conclusion, the authors wish to thank Prof. A. N. Tekuchev for valuable comments on the present paper. 相似文献
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Alt C Anticic T Baatar B Barna D Bartke J Betev L Białkowska H Billmeier A Blume C Boimska B Botje M Bracinik J Bramm R Brun R Buncić P Cerny V Christakoglou P Chvala O Cramer JG Csató P Darmenov N Dimitrov A Dinkelaker P Eckardt V Farantatos G Flierl D Fodor Z Foka P Freund P Friese V Gál J Gaździcki M Georgopoulos G Gładysz E Grebieszkow K Hegyi S Höhne C Kadija K Karev A Kliemant M Kniege S Kolesnikov VI Kollegger T Kornas E Korus R Kowalski M Kraus I Kreps M van Leeuwen M Lévai P Litov L 《Physical review letters》2005,94(19):192301
Results are presented on Omega production in central Pb+Pb collisions at 40 and 158A GeV beam energy. For the first time in heavy ion reactions, rapidity distributions and total yields were measured for the sum Omega(-) + Omega(+) at 40A GeV and for Omega(-) and Omega(+) separately at 158A GeV. The yields are strongly underpredicted by the string-hadronic UrQMD model but agree better with predictions from hadron gas models. 相似文献
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R. Stanoeva V. Bradnova S. Vokál P. I. Zarubin I. G. Zarubina N. A. Kachalova A. D. Kovalenko A. I. Malakhov G. I. Orlova N. G. Peresadko P. A. Rukoyatkin V. V. Rusakova E. Stan M. Haiduc S. P. Kharlamov I. Tsakov T. V. Shchedrina 《Physics of Atomic Nuclei》2007,70(7):1216-1221
The results obtained by studying the charge topology of fragments produced in the peripheral dissociation of relativistic 8B nuclei in emulsion are presented. Fifty-five events of the peripheral dissociation of a 8B nucleus in events where there was no production of target-nucleus fragments and mesons (“white stars”) were selected. A leading contribution of the 8B → 7Be + p mode, which has the lowest energy threshold, was revealed on the basis of these events. Information about the branching ratios for dissociation modes characterized by a higher multiplicity was obtained. The dissociation of the 7Be core in 8B bears resemblance to the dissociation of a free 7Be nucleus. The transverse-momentum distributions of fragments originating from the 8B → 7Be + p dissociation mode were obtained. For these distributions, a small mean value of 〈P*T〉 = 52 ± 5 MeV/c in the c.m. frame suggests a low binding energy of the outer proton in the 8B nucleus. An indication of a strong azimuthal correlation of the fragments 7Be and p was found. 相似文献
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G. A. Zenkovets G. N. Kryukova S. V. Tsybulya E. M. Al’kaeva T. V. Andrushkevich O. B. Lapina E. B. Burgina L. S. Dovlitova V. V. Malakhov G. S. Litvak 《Kinetics and Catalysis》2000,41(4):572-583
The formation of vanadia-titania catalysts was studied with a complex of physicochemical methods. The use of highly dispersed
anatase with a defect structure results in the formation of coherent boundaries of coalescence of the V2O5 and TiO2 crystallites with the ratio V : Ti =1 : 1 in a wide range of vanadium and titanium concentrations. The catalysts containing
coherent boundaries are active and selective in Β-picoline oxidation to nicotinic acid. 相似文献