PRODUCTION COHERENTE DE PIONS CHARGES DANS LES COLLISIONS NOYAU-NOYAU A DES ENERGIES INCIDENTES COMPRISES ENTRE 86 ET 303 MEV/NUCLEON PDF Download
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Author: PATRICK.. FASSNACHT
Publisher:
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Category :
Languages : fr
Pages :
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Author: PATRICK.. FASSNACHT
Publisher:
ISBN:
Category :
Languages : fr
Pages :
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Author:
Publisher:
ISBN:
Category : Nuclear energy
Languages : en
Pages : 1434
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Author: Christian Cavata
Publisher:
ISBN:
Category :
Languages : fr
Pages : 243
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CETTE THESE EST CONSACREE A L'ETUDE EXPERIMENTALE DE LA PRODUCTION DE PIONS DANS LES COLLISIONS D'IONS LOURDS RELATIVISTES. LES DEUX PREMIERS CHAPITRES SONT CONSACRES A LA PRESENTATION DE LA PHYSIQUE ETUDIEE AU MOYEN DES COLLISIONS D'IONS LOURDS, AINSI QU'A UN EVENTAIL DES MODELES THEORIQUES EXISTANTS. LE DETECTEUR DIOGENE EST DECRIT AU CHAPITRE TROIS. LE DERNIER CHAPITRE EST ENTIEREMENT CONSACRE A L'EXPOSE DE NOS RESULTATS. NOUS Y PRESENTONS LA TECHNIQUE D'ANALYSE DE DONNEES, AINSI QUE NOTRE METHODE DE SELECTION DE LA CENTRALITE DES COLLISIONS. APRES AVOIR PRESENTE LES NORMALISATIONS POUR L'ENSEMBLE DES SYSTEMES ETUDIES, NOUS PROPOSONS UNE ETUDE SYSTEMATIQUE DES MULTIPLICITES DE PIONS: VARIATION DU NOMBRE DE PIONS PRODUITS EN FONCTION DE LA CENTRALITE DES COLLISIONS, COMPARAISON AU MODELE DE CASCADE INTRANUCLEAIRE ET DETERMINATION DE L'EQUATION D'ETAT, VARIATION EN FONCTION DE L'ENERGIE OU DE LA TAILLE DU SYSTEME. LA DISTRIBUTION DE MULTIPLICITE DE PIONS A LES CARACTERISTIQUES D'UNE DISTRIBUTION DE POISSON, CE QUI NOUS PERMET D'ECARTER L'EVENTUALITE D'UNE PRODUCTION COHERENTE DES PIONS. NOUS PRESENTONS ENSUITE NOS MESURES DE SECTIONS EFFICACES DOUBLEMENT DIFFERENTIELLES, AINSI QUE NOTRE METHODE DE PARAMETRISATION DES DONNEES. NOUS POSONS ENSUITE LA QUESTION DE L'ORIGINE DES PIONS ET TENTONS D'Y REPONDRE EN METTANT EN EVIDENCE LA CONTRIBUTION DE LA RESONANCE DELTA ET DES PROCESSUS DIRECTS A UNE COLLISION INELASTIQUE NUCLEON-NUCLEON. NOUS CLOTURONS NOTRE ETUDE PAR UNE PRESENTATION DES MESURES D'ECOULEMENT COLLECTIF DES PIONS (SECTIONS EFFICACES TROIS FOIS DIFFERENTIELLES).
![Single pion production in [pi]+ - p collisions at 820, 900 and 1050 Mev PDF](https://books.google.com/books/content/images/frontcover/5tPOzQEACAAJ?fife=w80-h100)
Author: Commissariat à l'énergie atomique, Saclay. Laboratoire de physique corpusculaire á haute énergie
Publisher:
ISBN:
Category : Pions
Languages : fr
Pages : 24
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![Subthreshold Pion Production in the Reaction 139La + 139La --> [pi]± + X PDF](https://books.google.com/books/content/images/frontcover/GDjeyUcWPSwC?fife=w80-h100)
Author: Jack Miller
Publisher:
ISBN:
Category :
Languages : en
Pages : 460
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Author: Jean-Paul Blaizot
Publisher: Mit Press
ISBN: 9780262022149
Category : Science
Languages : en
Pages : 657
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Book Description
This book provides a comprehensive and pedagogical account of the various methods used in the quantum theory of finite systems, including molecular, atomic, nuclear, and particle phenomena. Covering both background material and advanced topics and including nearly 200 problems, Quantum Theory of Finite Systems has been designed to serve primarily as a text and will also prove useful as a reference in research. The first of the book's four parts introduces the basic mathematical apparatus: second quantization, canonical transformations, Wick theorems and the resulting diagram expansions, and oscillator models. The second part presents mean field approximations and the recently developed path integral methods for the quantization of collective modes. Part three develops perturbation theory in terms of both time-dependent Feynman diagrams and time-independent Goldstone diagrams. A fourth part discusses variational methods based on correlated wavefunctions, including spin correlations. The approximation schemes are formulated for fermions and bosons at eigher zero or non-zero temperature. Although the formalism developed applies to both finite and infinite systems, the book stresses those aspects of the theory that are specific to the description of finite systems. Thus special attention is given to mean field approximations, the ensuing broken symmetries, and the associated collective motions such as rotations. Conversely, some specific features of systems with infinite numbers of degrees of freedom (such as the thermodynamic limit, critical phenomena, and the elimination of ultraviolet divergencies) are deliberately omitted. Jean-Paul Blaizot and Georges Ripka are associated with the Centre d'Etudes Nucleaires de Saclay.
Author: Alessandra Ceretto
Publisher: Lulu.com
ISBN: 136509796X
Category :
Languages : en
Pages : 192
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