Open Access

Leyla Atar, Stefanos Paschalis, Carlo Barbieri, Carlos A. Bertulani, Paloma Díaz Fernández, Matthias Holl, Mohammad Ali Najafi, Valerii Panin, Héctor Alvarez-Pol, Thomas Aumann, Vladimir Avdeichikov, Saul Beceiro-Novo, Daniel Bemmerer, Jose Fernando Benlliure Anaya, Juan Manuel Boillos Betete, Konstanze Boretzky, Maria José Garcia Borge, Manuel Caamaño, Christoph Caesar, Enrique Casarejos Ruiz, Wilton N. Catford, Joakim Cederkäll, Marielle Chartier, Leonid V. Chulkov, Dolores Cortina Gil, Edgar Cravo, Raquel Crespo, Iris Dillmann, Zoltán Elekes, Joachim Enders, Olga Ershova, Alfredo Estradé Vaz, Fabio Farinon, Luis Mario Fraile Prieto, Martin Freer, Daniel Galaviz Redondo, Hans Geissel, Roman Gernhäuser, Pavel Golubev, Kathrin Göbel, Julius Hagdahl, Tanja Heftrich, Michael Heil, Marcel Heine, Andreas Heinz, Ana Henriques, Alexander Hufnagel, Alexander Ignatov, Håkan T. Johansson, Björn Jonson, Julian Kahlbow, Nasser Kalantar-Nayestanaki, Rituparna Kanungo, Aleksandra Kelic-Heil, Alexander Knyazev, Thorsten Kröll, Nikolaus Kurz, Marc Labiche, Christoph Langer, Tudi Le Bleis, Roy Crawford Lemmon, Simon Lindberg, Jorge Machado, J. Marganiec-Gałązka, Alina Movsesyan, Enrique Nácher González, Evgenii Y. Nikolskii, Thomas Nilsson, Chiara Nociforo, Angel Perea Martinez, Marina Petri, Stephane Pietri, Ralf Plag, René Reifarth, Guillermo Ribeiro Jimenez, Catherine Rigollet, Dominic M. Rossi, Marko Röder, Deniz Savran, Heiko Scheit, Haik Simon, Olivier Sorlin, Ina Syndikus, Jonathan Thomas Taylor, Olof Tengblad, Ronja Thies, Yasuhiro Togano, Marine Vandebrouck, Paulo Velho, Vasily Volkov, Andreas Wagner, Felix Wamers, Helmut Weick, Carl Wheldon, Gemma Louise Wilson, John S. Winfield, Philip John Woods, Dmitry Yakorev, Mikhail V. Zhukov, Andreas Zilges, Kai Zuber

• Quasifree one-proton knockout reactions have been employed in inverse kinematics for a systematic study of the structure of stable and exotic oxygen isotopes at the R3B/LAND setup with incident beam energies in the range of 300–450  MeV/u. The oxygen isotopic chain offers a large variation of separation energies that allows for a quantitative understanding of single-particle strength with changing isospin asymmetry. Quasifree knockout reactions provide a complementary approach to intermediate-energy one-nucleon removal reactions. Inclusive cross sections for quasifree knockout reactions of the type AO(p,2p)A−1N have been determined and compared to calculations based on the eikonal reaction theory. The reduction factors for the single-particle strength with respect to the independent-particle model were obtained and compared to state-of-the-art ab initio predictions. The results do not show any significant dependence on proton-neutron asymmetry.