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Author : Donald Verne Keller
Publisher :
ISBN 13 :
Total Pages : 168 pages
Book Rating : 4.:/5 (29 download)
Download or read book Nuclear Interactions of Antiprotons written by Donald Verne Keller and published by . This book was released on 1957 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :
Publisher :
ISBN 13 :
Total Pages : 4 pages
Book Rating : 4.:/5 (971 download)
Download or read book Measurement of Interaction Between Antiprotons written by and published by . This book was released on 2015 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this paper, one of the primary goals of nuclear physics is to understand the force between nucleons, which is a necessary step for understanding the structure of nuclei and how nuclei interact with each other. Rutherford discovered the atomic nucleus in 1911, and the large body of knowledge about the nuclear force that has since been acquired was derived from studies made on nucleons or nuclei. Although antinuclei up to antihelium-4 have been discovered and their masses measured, little is known directly about the nuclear force between antinucleons. Here, we study antiproton pair correlations among data collected by the STAR experiment at the Relativistic Heavy Ion Collider (RHIC), where gold ions are collided with a centre-of-mass energy of 200 gigaelectronvolts per nucleon pair. Antiprotons are abundantly produced in such collisions, thus making it feasible to study details of the antiproton-antiproton interaction. By applying a technique similar to Hanbury Brown and Twiss intensity interferometry, we show that the force between two antiprotons is attractive. In addition, we report two key parameters that characterize the corresponding strong interaction: the scattering length and the effective range of the interaction. Our measured parameters are consistent within errors with the corresponding values for proton-proton interactions. Our results provide direct information on the interaction between two antiprotons, one of the simplest systems of antinucleons, and so are fundamental to understanding the structure of more-complex antinuclei and their properties.
Author : F. Bradamante
Publisher : Springer Science & Business Media
ISBN 13 : 1461305950
Total Pages : 327 pages
Book Rating : 4.4/5 (613 download)
Download or read book Antiproton-Nucleon and Antiproton-Nucleus Interactions written by F. Bradamante and published by Springer Science & Business Media. This book was released on 2013-03-12 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third course of the International School on Physics with Low Energy Antiprotons was held in Erice, Sicily at the Ettore Majorana Centre for Scientific Culture, from 10 to 18 June, 1988. The School is dedicated to physics accessible to experiments using low energy antiprotons, especially in view of operation of the LEAR facility at CERN with the upgraded antiproton source AAC (Antiproton Accumulator AA and Antiproton Collector ACOL). The first course in 1986 covered topics related to fundamental symmetries; the second course in 1987 focused on spectroscopy of light and heavy quarks. This book con tains the Proceedings of the third course, devoted to the experimental and theoretical aspects of the interaction of antinucleons with nucleons and nuclei. The Proceedings contain both the tutorial lectures and contributions presented by participants during the School. The papers are organized in several sections. The first section deals with the theoretical aspects of NN scattering and annihilation, and the underlying QCD. The experimental techniques and results concerning NN scattering are contained in Section II. Section III contains theoretical reviews and contributions on anti proton-nucleus scattering and bound states. Section IV is devoted to the experimental results on the antiproton nucleus systems and their phenomenological analysis. Finally, some possible developments of the antiproton machines are presented.
Author :
Publisher : Springer
ISBN 13 : 9783540575405
Total Pages : 0 pages
Book Rating : 4.5/5 (754 download)
Download or read book Interactions of Pions and Antiprotons with Nuclei written by and published by Springer. This book was released on 1994-02-11 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The precise knowledge of production cross sections for specific radionuclides for medium energies (10 MeV to 100 GeV) of the incident particle gains ever more importance, not only for nuclear physics but also for many applications, e.g. astrophysics, radiation protection at accelerators but also on space flights, radioisotope techniques in medicine and for industrial applications and perhaps even for the removal of nuclear waste by accelerators. Since the last systematic review of these production cross sections in 1973 (LB I/5a, b, c) an impressive amount of new experimental data has been accumulated. In the present subvolume data for the production of radioisotopes by medium energetic pions and antiprotons on various targets are presented in tables and figures, the latter showing the general trend of the cross sections and can be more readily used for interpolations. The origin of the authors made it possible to include also data from the USSR and other East European states which sometimes are not easy to access. The tables and figures have been compiled with extraordinary care and should present the most complete compilation for this type of nuclear reactions. General remarks on the accelerators used and other experimental details are included for all subvolumes excisting so far.
Download or read book Nuclear Physics with Antiprotons written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Transparencies of an invited talk presented at the Nashville meeting of the American Physical Society, October 18-20, 1984, are included. Topics include: (1) Salient features of two-body N anti N interactions (N anti N reversible NN, annihilation mechanisms (quark models), and optical model phenomenology); (2) anti N-nucleus interactions - elastic, inelastic, etc. (new cross section data, optical potentials, signatures of spin-isospin dependence of N anti N force, and (anti p, p) reactions); and (3) anti N-nucleus annihilation processes (features of cascade or fluid dynamics calculations, searches for baryonium and other exotics, meson interferometry, and (anti p, NN) reactions. (WHK).
Author : Emilio Segrè
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (91 download)
Download or read book Nuclear Properties of Antinucleons written by Emilio Segrè and published by . This book was released on 1959 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Antiproton-nucleus Interactions written by and published by . This book was released on 1982 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The antiproton beams from LEAR are a means for uncovering a hopefully fertile source of physics in the interactions of antiparticles with nuclei. Bound or resonant states have been searched for in the anti N N system and perhaps one candidate found. Resonances in the anti N-A system may have an independent origin, unrelated to isolated states in the two-body system but nevertheless very revealing of the essential nature of the two-body forces. The use of antiproton projectiles to study conventional, and occasionally exotic nuclear structure warrants some attention because of the extreme peripherality of many anti p-induced reactions and the expected strong iso-spin selectivity for inelastic excitation of say giant resonances. The annihilation channels which generate strong absorption in the nuclear interior, localize direct reactions in the nuclear surface. In this fashion anti p's ressemble heavy-ion projectiles but possess the virtue of being a rather more elementary probe and it should be possible to calculate the average anti p-A interaction (optical potential) from something closer to first principles. Perhaps the most fundamental reason for using antinucleons is as carriers, into the target, of antiquarks. It is not at all clear that the sea quarks in a hadron, i.e. in the form of quark-antiquark pairs, exist on an equal footing with valence quarks. The production of cc states (and even of s anti s) appears highly suppressed in nucleon-nucleon collisions. This suppression must be taken into account in establishing the relative merits of pp or p anti p colliders in producing say the W-meson. By introducing antiquarks directly via anti N N and anti N-A one should surely obtain more definite information about q anti q interactions with LEAR, at the low momenta presumably crucial for hadron structure. (WHK).
Author : P.K.F. Grieder
Publisher : Elsevier
ISBN 13 : 0080530052
Total Pages : 1117 pages
Book Rating : 4.0/5 (85 download)
Download or read book Cosmic Rays at Earth written by P.K.F. Grieder and published by Elsevier. This book was released on 2001-07-27 with total page 1117 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1912 Victor Franz Hess made the revolutionary discovery that ionizing radiation is incident upon the Earth from outer space. He showed with ground-based and balloon-borne detectors that the intensity of the radiation did not change significantly between day and night. Consequently, the sun could not be regarded as the sources of this radiation and the question of its origin remained unanswered. Today, almost one hundred years later the question of the origin of the cosmic radiation still remains a mystery.Hess' discovery has given an enormous impetus to large areas of science, in particular to physics, and has played a major role in the formation of our current understanding of universal evolution. For example, the development of new fields of research such as elementary particle physics, modern astrophysics and cosmology are direct consequences of this discovery. Over the years the field of cosmic ray research has evolved in various directions: Firstly, the field of particle physics that was initiated by the discovery of many so-called elementary particles in the cosmic radiation. There is a strong trend from the accelerator physics community to reenter the field of cosmic ray physics, now under the name of astroparticle physics. Secondly, an important branch of cosmic ray physics that has rapidly evolved in conjunction with space exploration concerns the low energy portion of the cosmic ray spectrum. Thirdly, the branch of research that is concerned with the origin, acceleration and propagation of the cosmic radiation represents a great challenge for astrophysics, astronomy and cosmology. Presently very popular fields of research have rapidly evolved, such as high-energy gamma ray and neutrino astronomy. In addition, high-energy neutrino astronomy may soon initiate as a likely spin-off neutrino tomography of the Earth and thus open a unique new branch of geophysical research of the interior of the Earth. Finally, of considerable interest are the biological and medical aspects of the cosmic radiation because of it ionizing character and the inevitable irradiation to which we are exposed. This book is a reference manual for researchers and students of cosmic ray physics and associated fields and phenomena. It is not intended to be a tutorial. However, the book contains an adequate amount of background materials that its content should be useful to a broad community of scientists and professionals. The present book contains chiefly a data collection in compact form that covers the cosmic radiation in the vicinity of the Earth, in the Earth's atmosphere, at sea level and underground. Included are predominantly experimental but also theoretical data. In addition the book contains related data, definitions and important relations. The aim of this book is to offer the reader in a single volume a readily available comprehensive set of data that will save him the need of frequent time consuming literature searches.
Author : Bruce Cork
Publisher :
ISBN 13 :
Total Pages : 54 pages
Book Rating : 4.3/5 (91 download)
Download or read book Interactions of Antiprotons in Hydrogen, Beryllium, and Carbon written by Bruce Cork and published by . This book was released on 1960 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gabrijel Kernel
Publisher : World Scientific
ISBN 13 : 9814549355
Total Pages : 665 pages
Book Rating : 4.8/5 (145 download)
Download or read book Low Energy Antiproton Physics - Proceedings Of The Third Biennial Confr Physics written by Gabrijel Kernel and published by World Scientific. This book was released on 1995-09-15 with total page 665 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings cover the latest results in low energy antiproton physics. The volume consists of invited talks and invited contributions on the following subjects: nucleon-antinucleon interactions, antiprotons in astrophysics, meson spectroscopy, strangeness and charm production, antinucleon-nucleus interactions, fundamental symmetries, antiproton facilities, atomic physics with antiprotons, antihydrogen-facilities and experiments.
Author : Bertalan Juhasz
Publisher : Springer
ISBN 13 : 9783642445835
Total Pages : 0 pages
Book Rating : 4.4/5 (458 download)
Download or read book EXA/LEAP 2008 written by Bertalan Juhasz and published by Springer. This book was released on 2014-11-21 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the International Conferences EXA'08 (Exotic Atoms and Related Topics) and LEAP'08 (Low Energy Antiproton Physics) held from September 15th to 19th, 2008 in Vienna and hosted by the Stefan Meyer Institute for Subatomic Physics of the Austrian Academy of Sciences. Now the research in exotic atoms has a remarkable history of more than 50 years. Enormous success in the understanding of fundamental interactions and symmetries resulted from the research on these tiny objects at the femtoscale. This volume contains research papers on recent achievements and future opportunities of this highly interdisciplinary field of atomic, nuclear, and particle physics. The Proceedings are structured according to the conference session topics: exotic atoms, kaon-nucleon interaction, exotic decays, fundamental symmetries, particle trapping, antiproton collisions and antihydrogen, muon physics, nuclear physics with antiprotons, charm physics, baryons bound in nuclei, hadron and nuclear physics with antiprotons, new facilities and new ideas. Therefore, this volume represents a compilation of the most recent developments and new perspectives in the light of the upcoming research facilities (FAIR, J-PARC) and technologies. It is directed to researchers in the field and advanced students.
Download or read book Antiproton-nucleus Interaction written by and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Several facets of antinucleon-nucleus interactions are explored. The topics treated are: coherent interactions, production of unusual states and particles in the nuclear medium, and the creation of extreme states of matter by antimatter annihilation. It is found that temperatures of the magnitude necessary to achieve the predicted quark-gluon phase transition are obtained. 20 references.
Author : Charles Baltay
Publisher :
ISBN 13 :
Total Pages : 20 pages
Book Rating : 4.3/5 (91 download)
Download or read book Annihilation of Antiprotons in Hydrogen at Rest III written by Charles Baltay and published by . This book was released on 1965 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rein Silberberg
Publisher :
ISBN 13 :
Total Pages : 80 pages
Book Rating : 4.3/5 (91 download)
Download or read book A Further Study of Antiproton Interactions and the Annihilation Process written by Rein Silberberg and published by . This book was released on 1960 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : M. R. Pennington
Publisher :
ISBN 13 :
Total Pages : 558 pages
Book Rating : 4.X/5 (1 download)
Download or read book Antiproton 1984 written by M. R. Pennington and published by . This book was released on 1985 with total page 558 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K. Kleinknecht
Publisher :
ISBN 13 :
Total Pages : 498 pages
Book Rating : 4.:/5 (64 download)
Download or read book Proton-antiproton Interactions and Fundamental Symmetries written by K. Kleinknecht and published by . This book was released on 1989 with total page 498 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309173663
Total Pages : 222 pages
Book Rating : 4.3/5 (91 download)
Download or read book Nuclear Physics written by National Research Council and published by National Academies Press. This book was released on 1999-03-31 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dramatic progress has been made in all branches of physics since the National Research Council's 1986 decadal survey of the field. The Physics in a New Era series explores these advances and looks ahead to future goals. The series includes assessments of the major subfields and reports on several smaller subfields, and preparation has begun on an overview volume on the unity of physics, its relationships to other fields, and its contributions to national needs. Nuclear Physics is the latest volume of the series. The book describes current activity in understanding nuclear structure and symmetries, the behavior of matter at extreme densities, the role of nuclear physics in astrophysics and cosmology, and the instrumentation and facilities used by the field. It makes recommendations on the resources needed for experimental and theoretical advances in the coming decade.
