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Neutron-skin thickness from the study of the anti-analog giant dipole resonance

A. Krasznahorkay ; L. Stuhl ; M. Csatlós ; A. Algora ; J. Gulyás ; J. Timár ; N. Paar ; D. Vretenar ; M.N. Harakeh ; K. Boretzky ; M. Heil ; Yu.A. Litvinov ; D. Rossi ; C. Scheidenberger ; H. Simon ; H. Weick ; A. Bracco ; S. Brambilla ; N. Blasi ; F. Camera ; A. Giaz ; B. Million ; L. Pellegri ; S. Riboldi ; O. Wieland ; S. Altstadt ; M. Fonseca ; J. Glorius ; K. Göbel ; T. Heftrich ; A. Koloczek ; S. Kräckmann ; C. Langer ; R. Plag ; M. Pohl ; G. Rastrepina ; R. Reifarth ; S. Schmidt ; K. Sonnabend ; M. Weigand ; N. Kalantar-Nayestanaki ; C. Rigollet ; S. Bagchi ; M.A. Najafi ; T. Aumann ; L. Atar ; M. Heine ; M. Holl ; A. Movsesyan ; P. Schrock ; V. Volkov ; F. Wamers ; E. Fiori ; B. Löher ; J. Marganiec ; D. Savran ; Håkan T. Johansson (Institutionen för fundamental fysik, Subatomär fysik) ; P.D. Fernández ; U. Garg ; D.L. Balabanski
AIP Conference Proceedings. International Conference on Nuclear Structure and Dynamics 2012, Opatija, 9-13 July 2012 (0094-243X). Vol. 1491 (2012), p. 190-197.
[Konferensbidrag, refereegranskat]

The γ-decay of the anti-analog of the giant dipole resonance (AGDR) to the isobaric analog state has been measured following the p( 124Sn,n) reaction at a beam energy of 600 MeV/nucleon. The energy of the transition was also calculated with state-of-the-art self-consistent relativistic random-phase approximation (RPA) and turned out to be very sensitive to the neutronskin thickness (ΔRpn). By comparing the theoretical results with the measured one, the ΔRpn value for 124Sn was deduced to be 0.21 ± 0.07 fm, which agrees well with the previous results. The present method offers new possibilities for measuring the neutron-skin thicknesses of very exotic isotopes.

Nyckelord: giant dipole resonances, neutron-skin thickness, rare-isotope beams, relativistic random-phase approximation



Denna post skapades 2013-02-28. Senast ändrad 2016-08-19.
CPL Pubid: 174216

 

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Institutioner (Chalmers)

Institutionen för fundamental fysik, Subatomär fysik (2005-2013)

Ämnesområden

Fysik

Chalmers infrastruktur