JETP Letters -- June 25, 2000 Volume 71, Issue 12, pp. 483-519 ATOMS, SPECTRA, RADIATIONS High-Efficiency Zn Isotope Separation in a Photochemical Reaction Induced by Two-Photon Excitation P. A. Bokhan, V. V. Buchanov, D. É. Zakrevskii, A. Yu. Stepanov, and N. V. Fateev pp. 483-485 Full Text: PDF (53 kB) Interference Quenching of Light Transmitted through a Monolayer Film of Polymer-Dispersed Nematic Liquid Crystal A. V. Konkolovich, V. V. Presnyakov, V. Ya. Zyryanov, V. A. Loiko, and V. F. Shabanov pp. 486-488 Full Text: PDF (99 kB) Photonic-Crystal Fibers with a Photonic Band Gap Tunable within the Range of 930–1030 nm M. V. Alfimov, A. M. Zheltikov, A. A. Ivanov, V. I. Beloglazov, B. A. Kirillov, S. A. Magnitskii, A. V. Tarasishin, A. B. Fedotov, L. A. Mel'nikov, and N. B. Skibina pp. 489-492 Full Text: PDF (106 kB) Isotope Effect in (La-Pr-Ca)MnO3 Manganites N. M. Plakida pp. 493-495 Full Text: PDF (39 kB) Opening an Energy Gap in an Electron Double Layer System at the Integer Filling Factor in a Tilted Magnetic Field E. V. Deviatov, V. S. Khrapai, A. A. Shashkin, V. T. Dolgopolov, F. Hastreiter, A. Wixforth, K. L. Campman, and A. C. Gossard pp. 496-499 Full Text: PDF (88 kB) Oscillatory Behavior of the Resistance of Three-Layer Heteroepitaxial Mo/Nb/Mo (001) Films G. M. Mikhailov and I. V. Malikov pp. 500-503 Full Text: PDF (79 kB) Critical Current in Superconducting Quantum Point Contacts N. M. Shchelkachev pp. 504-507 Full Text: PDF (92 kB) CONDENSED MATTER Totally Symmetric Vibrational Modes of Fullerene C60 O. N. Bubel', S. A. Vyrko, E. F. Kislyakov, and N. A. Poklonskii pp. 508-510 Full Text: PDF (53 kB) Population Inversion and IR Amplification Induced by Intersubband Electron Transitions and Resonant Auger Processes in Quantum Wells L. E. Vorob'ev pp. 511-515 Full Text: PDF (69 kB) Electron Subsystem Superheating as a Cause of Nonlinear Current–Voltage Characteristics of Amorphous InOx Films M. V. Golubkov and G. É. Tsydynzhapov pp. 516-519 Full Text: PDF (78 kB)