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dc.contributor.author Rusev, Gencho en_US
dc.date.accessioned 2011-06-21T17:27:46Z
dc.date.available 2011-06-21T17:27:46Z
dc.date.issued 2010 en_US
dc.identifier.citation Makinaga,A.;Schwengner,R.;Rusev,G.;Doenau,F.;Frauendorf,S.;Bemmerer,D.;Beyer,R.;Crespo,P.;Erhard,M.;Junghans,A. R.;Klug,J.;Kosev,K.;Nair,C.;Schilling,K. D.;Wagner,A.. 2010. Dipole strength in La-139 below the neutron-separation energy. Physical Review C 82(2): 24314-24314. en_US
dc.identifier.issn 0556-2813 en_US
dc.identifier.uri http://hdl.handle.net/10161/4263
dc.description.abstract The gamma-ray strength function is an important input quantity for the determination of the photoreaction rate and the neutron capture rate for astrophysics as well as for nuclear technologies. To test model predictions, the photoabsorption cross section of La-139 up to the neutron-separation energy was measured using bremsstrahlung produced at the electron accelerator ELBE of Forschungszentrum Dresden-Rossendorf with an electron beam of 11.5 MeV kinetic energy. The experimental data were analyzed by applying Monte Carlo simulations of gamma-ray cascades to obtain the intensities of the ground-state transitions and their branching ratios. We found a significant enhancement of electric dipole strength in the energy range from 6 to 10 MeV that may be related with a pygmy dipole resonance. The present data are combined with photoneutron cross sections for La-139 and compared with results of calculations on the basis of a quasiparticle-random-phase approximation using an instantaneous-shape sampling. en_US
dc.language.iso en_US en_US
dc.publisher AMER PHYSICAL SOC en_US
dc.relation.isversionof doi:10.1103/PhysRevC.82.024314 en_US
dc.subject bremsstrahlung cross-section en_US
dc.subject n=82 nuclei en_US
dc.subject process nucleosynthesis en_US
dc.subject photon-scattering en_US
dc.subject fluctuations en_US
dc.subject simulation en_US
dc.subject physics, nuclear en_US
dc.title Dipole strength in La-139 below the neutron-separation energy en_US
dc.title.alternative en_US
dc.description.version Version of Record en_US
duke.date.pubdate 2010-8-16 en_US
duke.description.endpage 24314 en_US
duke.description.issue 2 en_US
duke.description.startpage 24314 en_US
duke.description.volume 82 en_US
dc.relation.journal Physical Review C en_US

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