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	Author	Poltoratska, I. et al; Rubio, B.
	Title	Pygmy dipole resonance in Pb-208			Type	Journal Article
	Year	2012	Publication	Physical Review C	Abbreviated Journal	Phys. Rev. C
	Volume	85	Issue	4	Pages	041304 - 5pp
	Keywords
	Abstract	Scattering of protons of several hundred MeV is a promising new spectroscopic tool for the study of electric dipole strength in nuclei. A case study of Pb-208 shows that, at very forward angles, J(pi) = 1(-) states are strongly populated via Coulomb excitation. A separation from nuclear excitation of other modes is achieved by a multipole decomposition analysis of the experimental cross sections based on theoretical angular distributions calculated within the quasiparticle-phonon model. The B(E1) transition strength distribution is extracted for excitation energies up to 9MeV; that is, in the region of the so-called pygmy dipole resonance (PDR). The Coulomb-nuclear interference shows sensitivity to the underlying structure of the E1 transitions, which allows for the first time an experimental extraction of the electromagnetic transition strength and the energy centroid of the PDR.
	Address	[Poltoratska, I.; von Neumann-Cosel, P.; Kalmykov, Y.; Krumbholz, A. M.; Ponomarev, V. Yu.; Richter, A.; Wambach, J.] Tech Univ Darmstadt, Inst Kernphys, D-64289 Darmstadt, Germany, Email: vnc@ikp.tu-darmstadt.de
	Corporate Author				Thesis
	Publisher	Amer Physical Soc	Place of Publication		Editor
	Language	English	Summary Language		Original Title
	Series Editor		Series Title		Abbreviated Series Title
	Series Volume		Series Issue		Edition
	ISSN	0556-2813	ISBN		Medium
	Area		Expedition		Conference
	Notes	WOS:000303069400001			Approved	no
	Is ISI	yes	International Collaboration	yes
	Call Number	IFIC @ pastor @			Serial	995
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