The Henryk Niewodniczanski Institute of Nuclear Physics Kraków, Poland - PDF

The Henryk Niewodniczanski Institute of Nuclear Physics Kraków, Poland At the final stage of ultra-relativistic heavy-ion collisions, a hadron gas is formed, whose temperature corresponds to the theoretically

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The Henryk Niewodniczanski Institute of Nuclear Physics Kraków, Poland At the final stage of ultra-relativistic heavy-ion collisions, a hadron gas is formed, whose temperature corresponds to the theoretically inferred value for the phase transition to the quark-gluon plasma. Annual Report 2001 ISSN Report No 1901 PRINTED BY THE HENRYK NIEWODNICZAŃSKI INSTITUTE OF NUCLEAR PHYSICS Editorial Board: B. Brzezicka, D. Erbel, M. Krygowska-Doniec, J. Mazur, J. Styczeń, and W. Zając or The Editors assume limited responsibility for the contents of materials supplied by the IFJ departments and groups. Front cover: At the final stage of ultra-relativistic heavy-ion collisions, delivered by the Relativistic Heavy Ion Collider at the Brookhaven National Laboratory, a hadron gas is formed whose temperature corresponds to the theoretically inferred value for the phase transition to the quark-gluon plasma. The measured ratios of the hadron multiplicities and the hadron transverse-momentum spectra are very well reproduced in the model which assumes local thermal equilibrium and includes the contributions from the decyas of all hadron resonances (W. Broniowski and W. Florkowski, Phys. Rev. Lett. 87 (2001) ). Opracowanie i skład komputerowy: SEKCJA WYDAWNICTW DZIAŁU INFORMACJI NAUKOWEJ IFJ druk: Drukania SKRYPT tel DIRECTORATE: General Director: Deputy Directors: Professor Andrzej Budzanowski Professor Roman Hołyński Dr Maria Pollak-Stachurowa Professor Jan Styczeń SCIENTIFIC COUNCIL: Chairman: Professor Krzysztof Rybicki Honorary Chairman: Professor Andrzej Hrynkiewicz Secretary: Halina Szymańska, M.A. tel.: (48) (12) ext. 301 fax: (48) (12) A. REPRESENTATIVES OF THE SCIENTIFIC STAFF: Jerzy Bartke, Prof. Rafał Broda, Prof. Andrzej Budzanowski, Prof. Stanisław Drożdż, Prof. Andrzej Eskreys, Prof. Roman Hołyński, Prof. Stanisław Jadach, Prof. Marek Jeżabek, Prof. Marek Kutschera, Prof. Jan Kwieciński, Prof. Leonard Leśniak, Prof. Piotr Malecki, Prof. Maria Massalska-Arodź, Assoc. Prof. Krzysztof Parliński, Prof. Jan Styczeń, Prof. Antoni Szczurek, Assoc. Prof. Jacek Turnau, Prof. Tadeusz Wasiutyński, Assoc. Prof. Henryk Wilczyński, Assoc. Prof. Barbara Wosiek, Prof. Wojciech Zając, Ph.D. Piotr Zieliński, Assoc. Prof. B. REPRESENTATIVES OF TECHNICAL PERSONNEL: Edmund Bakewicz, M.Sc., E.E. Joanna Bogacz, M.Sc. Barbara Brzezicka, M.Sc. Bronisław Czech, M.Sc., E.E. Jerzy Halik, M.Sc., M.E. Zbigniew Król, M.Sc., M.E. Stanisław Maranda Zbigniew Natkaniec, M.Sc., E.E. Elżbieta Ryba, M.Sc., E.E. Piotr Skóra, M.Sc, E.E. Józefa Turzańska Mirosław Ziębliński, M.Sc., E.E. C. MEMBERS OF THE SCIENTIFIC COUNCIL FROM OUTSIDE THE INSTITUTE: Tomir Coghen, Prof. Professor Emeritus Danuta Kisielewska, Prof. University of Mining and Metallurgy, Kraków Michał Turała, Prof. CERN, Geneva Kacper Zalewski, Prof. Jagiellonian University, Kraków CONTENTS: Department of Nuclear Reactions...1 Department of Nuclear Spectroscopy...41 Department of Structural Research...87 Department of Theoretical Physics...95 High Energy Physics Departments Department of Particle Theory Department of Leptonic Interactions Department of Hadron Structure Department of High Energy Nuclear Interactions The ALICE Experiment Laboratory The ATLAS Experiment Laboratory High Energy Physics Detector Construction Group Common Seminars of the High Energy Physics Departments Department of Environmental and Radiation Transport Physics Department of Radiation and Environmental Biology Department of Nuclear Radiospectroscopy Department of Nuclear Physical Chemistry Department of Materials Research by Computers Health Physics Laboratory T echnical Sections Cyclotron Section Magnetic Field Water Treatment Section Scientific Equipment Division List of Publications IFJ Author Index Overview Thanks to the hard work and creativity of our scientific and technical staff, year 2001 was concluded with many exciting and promising research results. Their highlights are: The Belle experiment, running at KEKB at the High Energy Accelerator Research Organization in Tsukuba (Japan), observed the time-dependent CP violation in a neutral B-meson system. The CP violation prameter sin(2φ 1 ) was measured to be 0.99±0.14±0.06. The work of the Cracow group concentrated mainly on the silicon vertex detector and on the analysis of the underlying physics. New results were obtained in the field of multiparticle production in heavy-ion collisions using the PHOBOS detector installed at the Relativistic Heavy Ion Collider (RHIC) at Brookhaven National Laboratory. The pseudorapidity densities of charged particles in Au + Au collisions measured near midrapidity show an approximately logarithmic evolution over a broad range of collision energies. The measurements of antiparticle-to-particle ratios allow an estimate of the baryochemical potential, showing a closer but not yet complete approach to the baryon-free regime potential at RHIC energies. An excellent fit to the transverse momentum spectra of p, p, π +, π and K,K + up to 1.5 GeV/c within the thermal model was obtained at s NN = 130 GeV, indicating the validity of the thermal model with expansion. Two large experiments, H1 and ZEUS, both with strong INP participation, continued their studies of e-p collisions at the HERA accelerator at DESY. For the project of the HERA collider upgrade, the Cracow ZEUS team built and installed most parts of the new luminosity detector, while the Cracow H1 group contributed to the design and development of the new software for data acquisition and on-line reconstruction. Preparations for future large experiments, ALICE, ATLAS and LHCB, at the p-p and A-A Large Hadron Collider at CERN, have continued, with strong human and financial involvement on our part. The experiments will continue the search for new particles (Higgs, super-particles) and the so-called New Physics phenomena (supersymmetry, quark-gluon plasma, CP violation) in the TeV energy range. The theoretical research was devoted to precision tests of the Standard Model, as well as to the search for a more complete theory of fundamental particles in close relation to the current and future high-energy experiments. In the field of nuclear structure, an outstanding result was the identification of the 10 + state in 206 Hg and the measurement of its decay probability. This allowed the determination of the core charge polarization value of e P = 0.60e. As a consequence, a rule was confirmed that the electrical quadrupole moment induced in the core has the proportionality factor of 0.6 for protons and 0.9 for neutrons. An interesting result was the proof that the constituent quark approach is broader than hadronlevel local effective theory permits. This was shown by studying the theory of weak radiative hyperon decays. B into π +, π and KK pairs. In the physics of condensed matter, using the PAC method it was shown experimentally for the first time, that the test radioactive atoms 111 In/ 111 Cd can jump between two sublattices of the intermetallic alloys of Hf Al 2. In cooperation with the Silesian University we investigated the magnetic properties of hemin, a blood cell component. It was found that the external magnetic field of about 5T increases the content of low-spin iron complex in the blood. Applying from calculations the first principles to the example of the FeBO 3 crystal it was shown that magnetic interaction could have a huge influence on phonon frequencies, contrary to the generally accepted opinion that magnetic interaction is too weak to influence phonons. In collaboration with KAERI (Korea), a new type of thermoluminescent detectors resistive to high temperatures was found which allows annealing at large exposure. The 48 MeV proton beam was succesfully extracted beam from our AIC-144 cyclotron. The dosimeter calibration laboratory obtained formal accreditation. The Marian Miȩsowicz award of the Polish Academy of Arts and Sciences went to dr K. Golec- Biernat for his work on saturation effects in DIS at low Q 2. Dr M. Kmiecik was awarded the Henryk Niewodniczański prize for her outstanding work on transitions between various Jacobi shapes at high angular momentum rotation of 46 Ti nuclei. 534 papers of which 318 in journals listed by the Philadelphia Institute of Science Information were published at our Institute. The Institute hosted eight international and three national scientific conferences. We participated in one FW4 and seven FW5 UE programmes. We also completed a large renovation effort aimed at preparing new facilities at at the main campus of the Institute for our high energy departments. Eleven scientists got their PhD degrees, five completed their habilitations and one got the title of a full professor. Two distinguished scientists were awarded the title of a Honorary Professor of the Henryk Niewodniczański Institute of Nuclear Physics, namely Professor Bernard Haas (IRS, Strasbourg) and Professor Bernard Hyams (CERN). Last but not least, let me take this opportunity to extend my sincere thank-you to my colleagues and co-workers at the Institute for their great involvement and effort which helped us to achieve all the excellent results in Professor Andrzej Budzanowski Director of the Institute
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