Acta Physica Hungarica 70. (1991)

1991 / 1-2. szám

CONTENTS Volume 70 70th birthday of Prof. Rezső Gáspár ....................................................................................................... 287 GENERAL PHYSICS The stability of a gas sphere with vanishing normal pressure in D space time dimensions. C. Wolf .................................................................................................................................................. 21 ELEMENTARY PARTICLES AND FIELDS The use of six-vectors in the theory of special relativity. I. Merches and C. Dariescu .... 63 Is the anomalous Brownian motion seen in emukions? Agnes Holba and B. Lukács........... 121 On the Bonnor counterparts of the Tomimatsu-Sato solutions. B. Lukács............................. 289 ATOMIC AND MOLECULAR PHYSICS Influence of solvents and temperature on the excited state characteristics of coumarin laser dyes. R. Gin, S. S. Rathi and M. K. Machwe ....................................................................... 3 IBr molecule: true potential energy curve and the dissociation energy. N. Rajamanickam, K. Palaniselvam, S. R. K. Rajavel, M. Rajesh and G. Sureshkumar ........................... 41 Proposal for a possible experimental arrangement of Auger- (AES) and core level ionization loss (ILS) coincidence spectroscopy in reflection mode (REELS). G. Gergely ......... 47 Vibrational transition probability and dissociation energy data for the AsN molecule. N. Rajamanickam, R. N. Senthilkumar, S. Ganesan, N. Gopalakrishnan, J. Rajkumar, V. Jegadesan and C. Dandapani...................................................................... 71 Effect of hydroxy substituents on the electronic spectra of naphthalene. Ashok K. Sharma, Virendra K. Jain and Z. H. Zaidi................................................................................................. 105 Ab initio calculations of polarizabilities of small molecules with Gauss-type function de­pending on perturbation. A. Bolotin, V. Rossikhin and E. Voronkov ......................... 299 Analysis of the Pauli potential of atoms and ions. A. Nagy .......................................................... 321 Self-consistent electron state calculations on bond-centered impurities in silicon. M. Walk and G. Papp.......................................................................................................................................... 333 Localized molecular orbitals of interacting molecular systems. E. Kapuy, F. Bartba, F. Bogár and C. Kozmutza ............................................................................................................ 341 Theoretical investigation of the interaction energy in the Li+ + H2O ionic complex. Zs. Ozoróczy, C. Kozmutza and E. Kapuy ............................................................................... 345 Atomic charge distribution in fourfold co-ordinated amorphous materials Carbon and silicon. S. Kugler and G. Náray-Szabó..................................................................................... 351 Model studies of the hydrogen-iron bond distances on BCC iron surfaces. I. László........... 361 Evaluation of explicit expressions for mean characteristics of atomic spectra. R. Karazija 367 Some new results and ideas on the shape of the cusp in the spectrum of electrons emitted in ion-atom collisions. D. Berényi, L. Sarkadi, L. Gulyás, A. Kövér, Gy. Szabó and J. Pálinkás ............................................................................................................................................ 381 Pseudopotential calculation with correlated wave function. Alkali-metal-copper compounds. I. Tamássy-Lentei and A. Derecskei-Kovács ........................................................................... 391

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