Speaker
Ms
Satbir Kaur
(Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS B3H 4R2, Canada)
Description
Charge radius is an important bulk property of the nucleus for investigating nuclear structure. The nuclei lying close to the boundaries of the nuclear chart (the drip lines) have revealed new features like halo and skin. Another new phenomenon that has emerged in the neutron-rich region is the changing or vanishing of magic numbers [1,2]. The knowledge of proton radii is crucial for understanding the halo and skin formation and also the shell evolution in unstable nuclei. The systematic study of proton radii along an isotope chain, together with knowledge of the matter radii is important to deduce the neutron skin thickness in the neutron-rich nuclei. Furthermore, the proton radii are crucial to understand the spatial correlation between halo neutrons and its core nucleus. Proton radii also serve as a test of newly developed structure models including those based on $ab$ $initio$ theory. Charge-changing cross section ($\sigma_{cc}$) is the total cross section for the change of the atomic number of the projectile nucleus. It is a unique method to extract the proton radii of neutron-rich nuclei using the Glauber model analysis. The proton radii of \textsuperscript{12-17}B [3] and \textsuperscript{12-19}C [4] have been successfully determined using the charge-changing cross section measurements. The neutron-rich oxygen isotopes are particularly interesting nuclei, with a new magic number (N=16) at the neutron drip line [5]. The proton radii of neutron-rich oxygen isotopes have not been measured till date. We, therefore, performed an experiment at Fragment Separator (FRS) in Germany using relativistic beams of \textsuperscript{16-24}O with energy around 900 MeV/u. In this talk, I will present the preliminary results of $\sigma_{cc}$ measurements of \textsuperscript{16-24}O.
References
[1] A. Ozawa et al., Phys. Rev. Lett. 84, 5493 (2000).
[2] R. Kanungo et al., Phys. Lett. B 528, 58 (2002).
[3] A. Estrade ́ et al., Phys. Rev. Let. 113, 132501 (2014).
[4] R. Kanungo et al. Phys. Rev. Lett. 117, 102501 (2016).
[5] C. R. Hoffman et al., Phys. Rev. Lett. 100, 152502 (2008).
Primary author
Ms
Satbir Kaur
(Department of Physics and Atmospheric Science, Dalhousie University, Halifax, NS B3H 4R2, Canada)
Co-authors
Alexei Evdokimov
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Alfredo Estrade
(Central Michigan University)
Ameil Frederic
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Andrej Prochazka
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Branislav SITAR
(Faculty of Mathematics and Physics, Comenius University, 84215 Bratislava, Slovakia)
C. Scheidenberger
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Chiara Nociforo
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
D. Cortina-Gil
(Universidad de Santiago de Compostela, E-15706 Santiago de Compostella, Spain)
Fabio Farinon
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
G. Guastalla
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Hans Geissel
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Helmut Weick
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Dr
Iris Dillmann
(TRIUMF)
Isao Tanihata
(RCNP, Osaka University, Mihogaoka, Ibaraki, Osaka 567 0047, Japan)
Ivan Mukha
(Universidad de Santiago de Compostela, E-15706 Santiago de Compostella, Spain)
J. Kurcewicz
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Jin Ong
(RCNP, Osaka University, Mihogaoka, Ibaraki, Osaka 567 0047, Japan)
John Stuart Winfield
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Jossittwilliams Vargas
(Universidad de Santiago de Compostela, E-15706 Santiago de Compostella, Spain)
Mr
Junki Tanaka
(Research Center for Nuclear Physics)
Maya Takechi
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Michele Marta
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Peter Strmeň
(Faculty of Mathematics and Physics, Comenius University, 84215 Bratislava, Slovakia)
Prof.
Rituparna Kanungo
(Saint Mary's University)
Ronja Knobel
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
S. Terashima
(School of Physics and Nuclear Energy Engineering and IRCNPC, Beihang University, Beijing 100191, China)
Dr
Soumya Bagchi
(Saint Mary's University, Halifax, Canada and GSI, Darmstadt, Germany)
Stephane Pietri
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
Dr
Wataru Horiuchi
(Hokkaido University)
Dr
Yassid Ayyad Limonge
(NSCL)
Yuri Litvinov
(GSI Helmholtzzentrum fu ̈r Schwerionenforschung, D-64291 Darmstadt, Germany)
