Acta Physica Hungarica 75. (1994)

CONTENTS Editorial. István Lovas.................................................................................................................................... 5 GENERAL PHYSICS Neutrons in the past and the future. Edward Teller ........................................................................ 9 Budapest Neutron Centre user facilities at the modernized research reactor. L. Rosta ... 13 NUCLEAR PHYSICS Fundamental physics with slow neutrons. K. Schreckenbach.......................................................... 25 Fast timing 7n77(0 — a new tool in nuclear spectroscopy. H. Mach ....................................... 47 Nuclear spectroscopy with slow neutrons. H. G. Börner.................................................................. 55 Neutron radiology — an overview. John P. Barton .......................................................................... 141 Is it possible to produce the next generation of UCN sources with density 103 — 104 cm-3? A. Serebrov............................................................................................................................................. 169 Cold neutron guiding and focusing. D. F. R. Mildner, H. Chen, R. G. Downing, V. A. Sharov and Q. F. Xiao ....................................................................................................... 177 Neutron activation analysis: an old faithful to cherish. F. De Corte ......................................... 189 Ultrafast rabbit systems and their applications. F. Grass .............................................................. 199 Achievements in neutron interferometry. H. Rauch ........................................................................... 203 Neutrons for fission-track dating and fission tracks for neutron spectrum monitoring. F. Bellemans, F. De Corte and P. Van den haute ................................................................ 317 Biological effect of p (18 MeV) + Be fast neutrons. A. M. Dam, L. G. Gazsó, M. Rétlaki, A. Fenyvesi and T. Molnár.............................................................................................................. 321 Possibility of observing conversion line shifts due to ionization of recoil nuclei in (n, 7)-reactions of thermal neutrons (planned experiment). A. Feoktistov and V. Kupryashkin.................................................................................................................................... 325 Nuclear physics and applications at Budapest Neutron Centre. G. Molnár, T. Belgya, I. Diószegi, В. Fazekas, Zs. Révay, A. Veres and L. Dabolczi ......................................... 329 Upgrading the neutron/gamma ratio at the horizontal channels of the ‘RA’ reactor. M. Pesic, M. Davidovic, S. Cupac and S. Milovanovic ...................................................... 335 IREN - A new intense source of resonance neutrons. V. L. Aksenov, N. S. Dikansky, A. K. Krasnykh, V. L. Lomidze, V. A. Novokhatsky, Yu. P. Popov, V. T. Rudenko, A. N. Skrinsky and W. I. Furman ............................................................................................... 341 Prompt gamma cold neutron activation analysis (PGCNAA) — the useful supplement for the characterization of Specimen Bank materials. M. Rossbach..................................... 345 AUSTRON — A pulsed neutron spallation source in Central Europe. M. Schuster and A. Colotto.............................................................................................................................................. 351 Commercial fco-based neutron activation analysis at DSM Research (the Netherlands). R. Van Sluijs, D. A. W. Bossus, D. Vervecken and G. Klok ........................................... 355

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