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AbstractAbstract
[en] In this series of lectures a review will be presented on electromagnetic and hadronic interactions at intermediate energies with the few-body system, with the aim of establishing whether realistic conventional two-body forces and the non-relativistic many-body Schroedinger equation can account for the experimental data. The two-body system and its interaction with electrons, photons and hadrons, the three-body system and its electromagnetic interactions and the four-body system and heavier nuclei are discussed in detail. (orig./BJ)
[de]
Im Rahmen dieser Vorlesungsreihe wird ein Ueberblick ueber elektromagnetische und hadronische Wechselwirkung von Systemen weniger Koerper bei mittleren Energien gegeben. Es ist das Ziel festzustellen, ob realistische konventionelle Zweikoerperkraefte und die nichtrelativistische Vielkoerper-Schroedinger-Gleichung die experimentellen Ergebnisse erklaeren koennen. Das Zweikoerpersystem und seine Wechselwirkung mit Elektronen, Photonen und Hadronen, das Dreikoerpersystem und seine elektromagnetischen Wechselwirkungen und das Vierkoerpersystem und schwerere Kerne werden im Detail diskutiert. (orig./BJ)Primary Subject
Source
Costa, S. (ed.) (Turin Univ. (Italy). Istituto di Chimica Fisica); Schaerf, C. (ed.) (Rome Univ. (Italy). Istituto di Fisica); Lecture Notes in Physics; v. 61; p. 521-585; ISBN 3-540-08139-9;
; 1977; p. 521-585; Springer; Berlin, Germany, F.R; 58 refs.; with figs. and tabs.

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AbstractAbstract
[en] A report is given on new important developments in the theory of two-, three-, and four-nucleon systems as appearing through the contributions to this conference. A few concluding remarks together with an outlook on desirable future progress in the field are added. (orig.)
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11. international IUPAP conference on few body systems in particle and nuclear physics (Few Body-11); Tokyo (Japan); 24-30 Aug 1986
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Journal Article
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Conference; Progress Report
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Hiyama, E., E-mail: hiyama@riken.jp2013
AbstractAbstract
[en] Hypernuclear physics has become very exciting owing to new epoch-making experimental data. The recent progress in theoretical and experimental studies of hypernuclei and discussion about the future development in this field are presented. (author)
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Journal Article
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Numerical Data
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AbstractAbstract
[en] It is important to measure the total activity most accurately when using a whole-body counter. In the whole-body counters described so far with detector arrangement of NaI(Tl) crystals, deviations of at least a factor of two occur for point sources of the same activity in the centre of the body or on the surface. To reduce these differences in susceptibility, a measuring device with 4 detectors was designed in which outer body sections are partially shielded as opposed to the body centre point. The shielding is achieved by a collimator system with rectangular opening and by a particular arrangement of the crystals in the collimators. A uniform susceptibility in a longitudinal direction can be achieved by moving the patient's bed through the detector arrangement. The designed system has a simple construction and guarantees a homogeneous susceptibility over the total body cross-section with deviations of less than 20% of the value at the centre of the body. (ORU/LH)
[de]
Beim Einsatz von Ganzkoerperzaehlern kommt es auf moeglichst genaue Messung der Gesamtaktivitaet an. Bei bisher beschriebenen Ganzkoerperzaehlern mit Detektoranordnungen aus NaJ(Tl)-Kristallen treten fuer Punktquellen gleicher Aktivitaet im Koerpermittelpunkt bzw. an der Oberflaeche Abweichungen von mindestens einem Faktor 2 auf. Zur Reduzierung dieser Unterschiede im Ansprechvermoegen wurde eine Messanordnung mit 4 Detektoren entworfen, bei der aeussere Koerperabschnitte gegenueber dem Koerpermittelpunkt partiell abgeschirmt werden. Die Abschirmung wird durch ein Kollimatorsystem mit rechteckiger Oeffnung und eine besondere Anordnung der Kristalle in den Kollimatoren erreicht. Ein gleichmaessiges Ansprechvermoegen in longitudinaler Richtung laesst sich durch Bewegung der Patientenliege durch die Detektoranordnung erzielen. Das konzipierte System hat einen einfachen Aufbau und gewaehrleistet ein homogenes Ansprechvermoegen ueber den gesamten Koerperquerschnitt mit Abweichungen kleiner 20% vom Wert am Koerpermittelpunkt. (ORU)Original Title
Ein Ganzkoerperzaehler fuer die Anwendung in der Klinik und beim Strahlenschutz
Primary Subject
Source
1975; 7 p; 6. scientific meeting of the Deutsche Gesellschaft fuer Medizinische Physik e.V; Berlin, F.R. Germany; 28 Apr 1975; 1 fig.; 5 refs.
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Report
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Sooyeul, L.; Seon Hee Park; Hyeon-Bong, P.; Seunghwan, K.
Proceedings of the European medical and biological engineering conference '99 (part II)1999
Proceedings of the European medical and biological engineering conference '99 (part II)1999
AbstractAbstract
[en] We suggested an automatic fat range setting method in computed tomography to measure body fat. Quantitative measurement of body fat is important for the diagnosis and treatment of diseases related to obesity. A body fat measurement by computed tomography presents body fat volume quantitatively at a specific region. The method to set the body fat range in Hounsfield units proportional to the voxel's density in computed tomography images was not known. We suggested an automatic setting method of the histogram in the computed tomography image, and we show the body fat range for 20 persons and various region of person. (author)
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Rehak, P.; Hutten, H. (eds.); 896 p; ISSN 0140-0118;
; 1999; p. 1068; European medical and biological engineering conference EMBEC '99; Vienna (Austria); 4-7 Nov 1999; Available from Institut fuer Elektro- und Biomedizinische Technik, TU Graz, Inffeldgasse 18, Graz (AT)

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AbstractAbstract
[en] The Bochum truncation of the coupled-cluster equations is applied to the nuclear matter problem. Numerical solutions are obtained on the two- and three-particle levels. Approximate treatments for the four-particle level including the four-particle cluster term result in only small contributions, demonstrating the fast convergence of the coupled-cluster scheme. The results are in agreement with variational and hole-line expansion calculations. (orig.)
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Journal Article
Journal
Nuclear Physics. A; ISSN 0375-9474;
; v. 366(2); p. 221-244

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Coester, F.
Argonne National Lab., IL (USA)1986
Argonne National Lab., IL (USA)1986
AbstractAbstract
[en] In relativistic quantum dynamics, the group structure demands that some transformations other than the time evolutions depend on dynamics. It is possible to choose the representation of a kinematic subgroup to be independent of the dynamics, leading to different ''forms of dynamics'' which are unitarily equivalen. In the ''front-form'' dynamics the kinematic subgroup leaves the light front invariant, and the rotations about any transverse axis are dynamical transformations. In the front form the kinematic subgroup includes the Lorentz transformations. The existence and construction of packing transformations in front-form particle dynamics are shown, and the general features of front-form dynamics needed for that purpose are reviewed. 5 refs
Primary Subject
Source
1986; 13 p; Workshop on constraint's theory and relativistic dynamics; Florence (Italy); 28-30 May 1986; Available from NTIS, PC A02/MF A01; 1 as DE86014590; Portions of this document are illegible in microfiche products.
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AbstractAbstract
[en] It is stated that the principal interest of these experiments is in changes in body calcium content with medical treatment. The technique for irradiating the patient and for subsequent whole-body counting are described. The problems involved in calibration by using a phantom are referred to. Partial-body activation measurements are considered. (U.K.)
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Journal Article
Journal
Proceedings of the Analytical Division of the Chemical Society; v. 13(7); p. 204-206
Country of publication
ACCELERATORS, ALKALINE EARTH METALS, BARYONS, CALCIUM ISOTOPES, CHEMICAL ANALYSIS, COUNTING TECHNIQUES, CYCLIC ACCELERATORS, ELEMENTARY PARTICLES, ELEMENTS, EVEN-EVEN NUCLEI, EXTERNAL IRRADIATION, FERMIONS, HADRONS, INTERMEDIATE MASS NUCLEI, IRRADIATION, ISOTOPES, METALS, MOCKUP, NUCLEI, NUCLEONS, STABLE ISOTOPES, STRUCTURAL MODELS
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AbstractAbstract
[en] Published in summary form only
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Israel Atomic Energy Commission, Tel Aviv; 396 p; Aug 1988; p. 277-279
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Report
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Coester, F.; Wiringa, R.B.
Argonne National Lab., IL (USA)1983
Argonne National Lab., IL (USA)1983
AbstractAbstract
[en] We have examined the consequences of Poincare invariance for the binding-energy calculations of few-body nuclei. Nonrelativistic Hamiltonians have been considered in an attempt to fit simultaneously the binding energies of 2-, 3-, 4-body nuclei and that of nuclear matter. Even with reasonable three-body forces it appears to be difficult to simultaneously fit the binding energies of 3- and 4-body nuclei. The size of the discrepancy is of the order of possible relativistic effects. After elimination of the center-of-mass motion the two-body Schroedinger equation can always be interpreted as a relativistic equation. Given a two-body mass operator (i.e. a two-body Hamiltonian for zero total momentum) it is possible to construct a consistent relativistic multi-body dynamics with a nonrelativistic limit. The relativistic effects can be calculated in first-order perturbation theory using an expansion in inverse powers of the nucleon mass
Primary Subject
Source
1983; 2 p; 10. international conference on few-body problems in physics; Karlsruhe (Germany, F.R.); 21-27 Aug 1983; Available from NTIS, PC A02/MF A01 as DE83014711
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