"TITLE","AUTHORS","SUBJECT","SUBJECT_RELATED","DESCRIPTION","PUBLISHER","AVAILABILITY","RESEARCH_ORG","SPONSORING_ORG","PUBLICATION_COUNTRY","PUBLICATION_DATE","CONTRIBUTING_ORGS","LANGUAGE","RESOURCE_TYPE","TYPE_QUALIFIER","JOURNAL_ISSUE","JOURNAL_VOLUME","RELATION","COVERAGE","FORMAT","IDENTIFIER","REPORT_NUMBER","DOE_CONTRACT_NUMBER","OTHER_IDENTIFIER","DOI","RIGHTS","ENTRY_DATE","OSTI_IDENTIFIER","PURL_URL" "Hadronic spin excitations in finite fermion systems; Hadronische Spinanregungen in endlichen Fermionensystemen","Unkelbach, W","73 NUCLEAR PHYSICS AND RADIATION PHYSICS; CARBON 12 TARGET; PROTON REACTIONS; ANTIPROTON REACTIONS; CALCIUM 40 TARGET; CALCIUM 48 TARGET; LEAD 208 TARGET; INELASTIC SCATTERING; RANDOM PHASE APPROXIMATION; ANTIPROTONS; NUCLEAR STRUCTURE; MAGIC NUCLEI; E3-TRANSITIONS; DWBA; CARBON 12; ROTATIONAL STATES; INTERACTION RANGE; DIFFERENTIAL CROSS SECTIONS; NUCLEON-ANTINUCLEON INTERACTIONS; OPE MODEL; OPE POTENTIAL; GIANT RESONANCE; COLLECTIVE EXCITATIONS; TRANSITION AMPLITUDES; SUM RULES; STRENGTH FUNCTIONS; MEV RANGE 10-100; MEV RANGE 100-1000; THEORETICAL DATA; ENERGY SPECTRA; PROTON SPECTRA; E0-TRANSITIONS; E1-TRANSITIONS; E2-TRANSITIONS; VIBRATIONAL STATES; M1-TRANSITIONS; LEAD 208; C...; 663430; 663520; 663540; 663580; NUCLEON-INDUCED REACTIONS AND SCATTERING; A = 6-19; A = 39-58; A = 190-219","","Hadronic spin-excitations in finite Fermi systems are investigated by studying inelastic proton- and antiproton-nucleus scattering in doubly magic nuclei ({sup 12}C, 4{sup 0}Ca, {sup 48}Ca, {sup 208}Pb). The Random-Phase-Approximation (RPA) and the Distorted-Wave-Born-Approximation (DWBA) are used to describe the nuclear structure and reaction respectively. The possibility of a low-energy octupole resonance (LEOR) in {sup 208}Pb, which exhausts a significant fraction of the energy weighted sum rule, is investigated. It is found that the sum-rule fraction of {proportional_to} 15% seen in (p,p`) reactions depends sensitively on the strength of the isovector projectile-target nucleus interaction. To study spin-excitations in (p,p`)-reactions, the double differential cross section and the spin-flip probability S{sub yy} are calculated for forward angles. They are in good agreement with experiments on 4{sup 0}Ca, {sup 48}Ca and {sup 208}Pb at intermediate incident energies (200 MeV - 800 MeV). The experimentally observed spin-dipole resonance in 4{sup 0}Ca can be reproduced. S{sub yy} depends sensitively on the distorions of the projectile wave. Different versions of the Nanti N-potential of the Bonn-Juelich group have been used to calculate (anti p,anti p`) cross sections on {sup 12}C. They show large sensitivity for unnatural parity states. Because of the strong absorption, this reaction is an excellent probe for the long-range one-pion exchange. (orig.). [Deutsch] Im Rahmen dieser Arbeit wurde die Anregung verschiedener kollektiver Zustaende doppelt magischer Kerne ({sup 12}C, 4{sup 0}Ca, {sup 48}Ca, {sup 208}Pb) durch inelastische Proton- und Antiproton-Kern-Steuerung untersucht. Dazu kam die RPA zur Darstellung der Kernstruktur und die DWBA fuer die Reaktionsrechnung zur Anwendung. Die Analyse von Wirkungsquerschnitten und Spinobservablen erlaubte Rueckschluesse auf die effektive Projektil-Target-Wechselwirkung sowie auf die Natur der betrachteten Anregungen. (orig.).","","OSTI; NTIS (US Sales Only); INIS","Forschungszentrum Juelich GmbH (Germany). Inst. fuer Kernphysik; Bonn Univ. (Germany)","","Germany","1991-05-01","","German","Thesis/Dissertation","Numerical Data; Technical Report","","","Other Information: TH: Diss. Thesis; PBD: May 1991","","Medium: X; Size: 152 p.","ON: DE92758896","Juel-2477","","Other: ON: DE92758896; TRN: DE9200315","https://doi.org/","","2008-02-12","10114042",""