M
Margareta Hellström
Researcher at Lund University
Publications - 199
Citations - 6520
Margareta Hellström is an academic researcher from Lund University. The author has contributed to research in topics: Neutron & Excited state. The author has an hindex of 45, co-authored 197 publications receiving 6076 citations. Previous affiliations of Margareta Hellström include Technische Universität Darmstadt & GSI Helmholtz Centre for Heavy Ion Research.
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Journal ArticleDOI
Nuclear symmetry energy and neutron skins derived from pygmy dipole resonances
A. Klimkiewicz,Nils Paar,P. Adrich,M. Fallot,K. Boretzky,Thomas Aumann,D. Cortina-Gil,U. Datta Pramanik,Th. W. Elze,H. Emling,Hans Geissel,Margareta Hellström,K. L. Jones,J. V. Kratz,R. Kulessa,C. Nociforo,R. Palit,Herbert A. Simon,G. Surówka,K. Sümmerer,Dario Vretenar,W. Waluś +21 more
TL;DR: By exploiting Coulomb dissociation of high-energy radioactive beams of the neutron-rich nuclei, their dipole-strength distributions have been measured as mentioned in this paper, and a sizable fraction of ''pygmy'' dipole strength, energetically located below the giant dipole resonance, is observed in all of these nuclei.
Journal ArticleDOI
The Super-FRS project at GSI
Hans Geissel,Helmut Weick,M. Winkler,G. Münzenberg,V. Chichkine,Mikhail I. Yavor,Thomas Aumann,K.-H. Behr,M. Böhmer,A. Brünle,K. Burkard,J. Benlliure,D. Cortina-Gil,L. V. Chulkov,A. Dael,J.-E. Ducret,H. Emling,Bernhard Franczak,J. Friese,B. Gastineau,J. Gerl,R. Gernhäuser,Margareta Hellström,Björn Jonson,J. Kojouharova,R. Kulessa,Birgit Kindler,N. Kurz,Bettina Lommel,W. Mittig,G. Moritz,C. Mühle,Jerry Nolen,Gunnar Nyman,P. Roussell-Chomaz,C. Scheidenberger,K.-H. Schmidt,G. Schrieder,B. M. Sherrill,Herbert A. Simon,K. Sümmerer,Naeem A. Tahir,V.S. Vysotsky,Hermann Wollnik,Al Zeller +44 more
TL;DR: The Super-FRS as discussed by the authors is a large-acceptance superconducting fragment separator followed by different experimental branches including a combination with a new storage-cooler ring system, which allows precision mass and lifetime measurements as well as in-ring reaction studies.
Journal ArticleDOI
Evidence for Pygmy and Giant Dipole Resonances in Sn 130 and Sn 132
P. Adrich,A. Klimkiewicz,M. Fallot,K. Boretzky,Thomas Aumann,D. Cortina-Gil,U. Datta Pramanik,Th. W. Elze,H. Emling,Hans Geissel,Margareta Hellström,K. L. Jones,J. V. Kratz,R. Kulessa,Y. Leifels,C. Nociforo,R. Palit,Herbert A. Simon,G. Surówka,K. Sümmerer,W. Waluś +20 more
TL;DR: In this paper, the dipole strength distribution above the one-neutron separation energy was measured in the unstable and double-magic Sn isotopes, and the results were deduced from Coulomb dissociation of secondary Sn beams with energies around.
Journal ArticleDOI
Continuum excitations in 6 He
Thomas Aumann,Thomas Aumann,Thomas Aumann,Dmitry Aleksandrov,Leif Axelsson,Thomas Baumann,M. J. G. Borge,L. V. Chulkov,J. Cub,J. Cub,W. Dostal,B. Eberlein,Th. W. Elze,H. Emling,Hans Geissel,V. Z. Goldberg,M. Golovkov,A. Grünschloß,Margareta Hellström,Kai Hencken,J. Holeczek,J. Holeczek,R. Holzmann,Björn Jonson,A. A. Korshenninikov,J. V. Kratz,G. Kraus,R. Kulessa,Y. Leifels,A. Leistenschneider,T. Leth,I. Mukha,I. Mukha,G. Münzenberg,F. Nickel,Thomas Nilsson,Göran Hugo Nyman,B. Petersen,M. Pfützner,Achim Richter,K. Riisager,C. Scheidenberger,G. Schrieder,W. Schwab,Herbert A. Simon,M. H. Smedberg,M. Steiner,Joachim Stroth,A. Surowiec,A. Surowiec,Takatoshi Suzuki,Olof Tengblad,Mikhail V. Zhukov +52 more
TL;DR: Aumann et al. as discussed by the authors used PACS number(s): 27.20.Gc, 25.60.De, 29.1n,25.70.Hs
Journal ArticleDOI
Measurements of interaction cross sections for light neutron-rich nuclei at relativistic energies and determination of effective matter radii
A. Ozawa,O. V. Bochkarev,L. V. Chulkov,D. Cortina,Hans Geissel,Margareta Hellström,M. Ivanov,R. Janik,K. Kimura,Toshio Kobayashi,A.A. Korsheninnikov,G. Münzenberg,F. Nickel,Yoko Ogawa,A. A. Ogloblin,M. Pfützner,V. Pribora,Herbert A. Simon,Branislav Sitar,Peter Strmen,K. Sümmerer,Toshio Suzuki,Isao Tanihata,M. Winkler,Koichi Yoshida +24 more
TL;DR: In this paper, the Glauber-model analysis was applied to a few-body system adapted for nuclei with an odd neutron number, and the effective nucleus-matter densities as well as some spectroscopic information for selected nuclei were derived.