Search

Your search keyword '"Savran, Deniz"' showing total 42 results
Start Over Author "Savran, Deniz"

Refine your results

42 results on '"Savran, Deniz"'

2. Coulomb dissociation of $^{20,21}$N

Author

Röder, Marko, Adachi, Tatsuya, Aksyutina, Yulia, Alcantara, Juan, Altstadt, Sebastian, Alvarez-Pol, Hector, Ashwood, Nicholas, Atar, Leyla, Aumann, Thomas, Avdeichikov, Vladimir, Barr, M., Beceiro, Saul, Bemmerer, Daniel, Benlliure, Jose, Bertulani, Carlos, Boretzky, Konstanze, Borge, Maria J. G., Burgunder, G., Caamano, Manuel, Caesar, Christoph, Casarejos, Enrique, Catford, Wilton, Cederkall, Joakim, Chakraborty, S., Chartier, Marielle, Chulkov, Leonid, Cortina-Gil, Dolores, Crespo, Raquel, Pramanik, Ushasi Datta, Diaz-Fernandez, Paloma, Dillmann, Iris, Elekes, Zoltan, Enders, Joachim, Ershova, Olga, Estrade, A., Farinon, F., Fraile, Luis M., Freer, Martin, Freudenberger, M., Fynbo, Hans, Galaviz, Daniel, Geissel, Hans, Gernhäuser, Roman, Göbel, Kathrin, Golubev, Pavel, Diaz, Diego Gonzalez, Hagdahl, Julius, Heftrich, Tanja, Heil, Michael, Heine, Marcel, Heinz, Andreas, Henriques, Ana, Holl, Matthias, Ickert, G., Ignatov, Alexander, Jakobsson, Bo, Johansson, Hakan, Jonson, Björn, Kalantar-Nayestanaki, Nasser, Kanungo, Rituparna, Kelic-Heil, Aleksandra, Knöbel, Ronja, Kröll, Thorsten, Krücken, Reiner, Kurcewicz, J., Kurz, Nikolaus, Labiche, Marc, Langer, Christoph, Bleis, Tudi Le, Lemmon, Roy, Lepyoshkina, Olga, Lindberg, Simon, Machado, Jorge, Marganiec, Justyna, Caro, Magdalena Mostazo, Movsesyan, Alina, Najafi, Mohammad Ali, Nilsson, Thomas, Nociforo, Chiara, Panin, Valerii, Paschalis, Stefanos, Perea, Angel, Petri, Marina, Pietri, S., Plag, Ralf, Prochazka, A., Rahaman, Md. Anisur, Rastrepina, Ganna, Reifarth, Rene, Ribeiro, Guillermo, Ricciardi, M. Valentina, Rigollet, Catherine, Riisager, Karsten, Rossi, Dominic, Saez, Jose Sanchez del Rio, Savran, Deniz, Scheit, Heiko, Simon, Haik, Sorlin, Olivier, Stoica, V., Streicher, Branislav, Taylor, Jon, Tengblad, Olof, Terashima, Satoru, Thies, Ronja, Togano, Yasuhiro, Uberseder, Ethan, Van de Walle, J., Velho, Paulo, Volkov, Vasily, Wagner, Andreas, Wamers, Felix, Weick, Helmut, Weigand, Mario, Wheldon, Carl, Wilson, G., Wimmer, Christine, Winfield, J. S., Woods, Philip, Yakorev, Dmitry, Zhukov, Mikhail, Zilges, Andreas, and Zuber, Kai

Subjects
Nuclear Experiment
Abstract

Neutron-rich light nuclei and their reactions play an important role for the creation of chemical elements. Here, data from a Coulomb dissociation experiment on $^{20,21}$N are reported. Relativistic $^{20,21}$N ions impinged on a lead target and the Coulomb dissociation cross section was determined in a kinematically complete experiment. Using the detailed balance theorem, the $^{19}\mathrm{N}(\mathrm{n},\gamma)^{20}\mathrm{N}$ and $^{20}\mathrm{N}(\mathrm{n},\gamma)^{21}\mathrm{N}$ excitation functions and thermonuclear reaction rates have been determined. The $^{19}\mathrm{N}(\mathrm{n},\gamma)^{20}\mathrm{N}$ rate is up to a factor of 5 higher at $T<1$\,GK with respect to previous theoretical calculations, leading to a 10\,\% decrease in the predicted fluorine abundance.

Published
2016
Full Text
View/download PDF

4. Investigation of the Pygmy Dipole Resonance in photon scattering experiments

Author

Müscher, Miriam, Isaak, Johann, Savran, Deniz, Schwengner, Ronald, Wilhelmy, Julius, Zilges, Andreas, Müscher, Miriam, Isaak, Johann, Savran, Deniz, Schwengner, Ronald, Wilhelmy, Julius, and Zilges, Andreas

Abstract

The Pygmy Dipole Resonance (PDR) is the dominating electric dipole excitation below and around the particle separation threshold and exhausts only a few percent of the energy-weighted sum rule. Nevertheless, it may have some impact on reaction rates in nucleosynthesis processes. Therefore, investigations to get more insights in this excitation mode are crucial. A common approach to study the PDR of atomic nuclei is the Nuclear Resonance Fluorescence method (NRF) which bases on real-photon scattering. Absolute cross sections, spin and parity quantum numbers are determined in a model-independent way if suited experimental setups are used. In general, there are two complementary NRF experiments which are presented in this paper.

Published
2024

5. Population of dipole states via isoscalar probes: the splitting of pygmy dipole resonance in $^{124}$Sn}

Author

Lanza, Edoardo G., Vitturi, Andrea, Litvinova, Elena, and Savran, Deniz

Subjects
Nuclear Theory, Nuclear Experiment
Abstract

Inelastic $\alpha$-scattering excitation cross sections are calculated for electric dipole excitations in $^{124}$Sn based on the transition densities obtained from the relativistic quasiparticle time-blocking approximation (RQTBA) in the framework of a semiclassical model. The calculation provides the missing link to directly compare the results from the microscopic RQTBA calculations to recent experimental data measured via the $(\alpha ,\alpha '\gamma)$ reaction, which show a structural splitting of the low-lying E1 strength often denoted as pygmy dipole resonance (PDR). The experimentally observed splitting is reproduced by the cross section calculations, which allows to draw conclusion on the structure of the PDR., Comment: 6 pages, 7 figures; accepted in Phys. Rev C as Rapid Communication

Published
2014
Full Text
View/download PDF

6. Coulomb dissociation of 16O into 4He and 12C

Author

Bott Lukas Thomas, Göbel Kathrin, Heil Michael, Kelić-Heil Aleksandra, Reifarth René, Aliotta Marialuisa, Almusidi Tahani, Alvarez-Pol Hector, Atar Leyla, Atkins Liam, Aumann Thomas, Bemmerer Daniel, Benlliure José, Bertulani Carlos, Boretzky Konstanze, Brückner Benjamin, Brandenburg Leonhard, Bruni Giovanni, Cabanelas Eiras Pablo, Caesar Christoph, Casarejos Enrique, Cederkall Joakim, Chulkov Leonid, Cortina-Gil Dolores, Danilov Andrey, De Filippo Enrico, Dellmann Sophia Florence, Deuter Isabell, Dueñas Díaz José Antonio, Duer Meytal, Elekes Zoltan, Erbacher Philipp, Escribano Rodriguez Sonia, Fülöp Zsolt, Falduto Ashton, Feijoo Manuel, Fiebiger Stefan, Gašparić Igor, Galaviz Daniel, García Borge María José, García-Jiménez Gabriel, Geraci Elena, Gernhäuser Roman, Glorius Jan, Gnoffo Brunilde, González Caamaño David, Graña González Antia, Grein Alexander, Hartig AnnaLena, Heftrich Tanja, Heggen Henning, Heine Marcel, Heinz Andreas, Henrich Corinna, Hensel Thomas, Holl Matthias, Homm Ilja, Horváth Ákos, Horvat Andrea, Jedele Andrea, Jelavic Malenica Desa, Jenegger Tobias, Johansson Håkan T., Jonson Björn, Kahlbow Julian, Kalantar-Nayestanaki Nasser, Kamenyero Armel, Khasawneh Kafa, Kiselev Oleg, Klenze Philipp, Knösel Marco, Koch Karsten, Kohls Marvin, Körper Daniel, Kröll Thorsten, Krasilovskaja Sabina, Kresan Dmytro, Kurtulgil Deniz, Kurz Nikolaus, Löher Bastian, Langer Christoph, Lederer-Woods Claudia, Lehr Christopher, Litvinov Yuri A, Lorenz Enis, Martorana Nunzia Simona, Motobayashi Tohru, Murillo Morales Silvia, Nacher Enrique, Nilsson Thomas, Pagano Emanuele Vincenzo, Panin Valerii, Park Joochun, Paschalis Stefanos, Perea Angel, Petri Marina, Pirrone Sara, Plag Ralf, Ponnath Lukas, Popočovski Romana, Reich Markus, Rhee Han-Bum, Rodriguez Sanchez Jose Luis, Rossi Dominic, Russotto Paolo, Sánchez-Benítez Ángel-Miguel, Sürder Christian, Savran Deniz, Scheit Heiko, Schmidt Konrad, Schulte Hendrik, Simon Haik, Simon Johannes, Starostin Viktor, Storck-Dutine Sonja, Törnqvist Hans Toshihide, Tanaka Junki, Tengblad Olof, Thomas Benedikt, Trimarchi Marina, Typel Stefan, Varga László, Volk Klaus, Volknandt Meiko, Wagner Vadim, Wamers Felix, Weigand Mario, and Zanetti Lorenzo

Subjects
Physics, QC1-999
Abstract

We measured the Coulomb dissociation of 16O into 4He and 12C within the FAIR Phase-0 program at GSI Helmholtzzentrum für Schwerionenforschung Darmstadt, Germany. From this we will extract the photon dissociation cross section 16O(α,γ)12C, which is the time reversed reaction to 12C(α,γ)16O. With this indirect method, we aim to improve on the accuracy of the experimental data at lower energies than measured so far. The expected low cross section for the Coulomb dissociation reaction and close magnetic rigidity of beam and fragments demand a high precision measurement. Hence, new detector systems were built and radical changes to the R3B setup were necessary to cope with the high-intensity 16O beam. All tracking detectors were designed to let the unreacted 16O ions pass, while detecting the 12C and 4He.

Published
2023
Full Text
View/download PDF

7. Coulomb dissociation of $^{16}O$ into $^{4}He$ and $^{12}C$

Author

Bott, Lukas Thomas, Göbel, Kathrin, Heil, Michael, Kelić-Heil, Aleksandra, Reifarth, René, Aliotta, Marialuisa, Almusidi, Tahani, Alvarez-Pol, Hector, Atar, Leyla, Atkins, Liam, Aumann, Thomas, Bemmerer, Daniel, Benlliure, José, Bertulani, Carlos, Boretzky, Konstanze, Brückner, Benjamin, Brandenburg, Leonhard, Bruni, Giovanni, Cabanelas Eiras, Pablo, Caesar, Christoph, Casarejos, Enrique, Cederkall, Joakim, Chulkov, Leonid, Cortina-Gil, Dolores, Danilov, Andrey, De Filippo, Enrico, Dellmann, Sophia Florence, Deuter, Isabell, Dueñas Díaz, José Antonio, Duer, Meytal, Elekes, Zoltan, Erbacher, Philipp, Escribano Rodriguez, Sonia, Fülöp, Zsolt, Falduto, Ashton, Feijoo, Manuel, Fiebiger, Stefan, Gašparić, Igor, Galaviz, Daniel, García Borge, María José, García-Jiménez, Gabriel, Geraci, Elena, Gernhäuser, Roman, Glorius, Jan, Gnoffo, Brunilde, González Caamaño, David, Graña González, Antia, Grein, Alexander, Hartig, AnnaLena, Heftrich, Tanja, Heggen, Henning, Heine, Marcel, Heinz, Andreas, Henrich, Corinna, Hensel, Thomas, Holl, Matthias, Homm, Ilja, Horváth, Ákos, Horvat, Andrea, Jedele, Andrea, Jelavic Malenica, Desa, Jenegger, Tobias, Johansson, Håkan T., Jonson, Björn, Kahlbow, Julian, Kalantar-Nayestanaki, Nasser, Kamenyero, Armel, Khasawneh, Kafa, Kiselev, Oleg, Klenze, Philipp, Knösel, Marco, Koch, Karsten, Kohls, Marvin, Körper, Daniel, Kröll, Thorsten, Krasilovskaja, Sabina, Kresan, Dmytro, Kurtulgil, Deniz, Kurz, Nikolaus, Löher, Bastian, Langer, Christoph, Lederer-Woods, Claudia, Lehr, Christopher, Litvinov, Yuri A, Lorenz, Enis, Martorana, Nunzia Simona, Motobayashi, Tohru, Murillo Morales, Silvia, Nacher, Enrique, Nilsson, Thomas, Pagano, Emanuele Vincenzo, Panin, Valerii, Park, Joochun, Paschalis, Stefanos, Perea, Angel, Petri, Marina, Pirrone, Sara, Plag, Ralf, Ponnath, Lukas, Popočovski, Romana, Reich, Markus, Rhee, Han-Bum, Rodriguez Sanchez, Jose Luis, Rossi, Dominic, Russotto, Paolo, Sánchez-Benítez, Ángel-Miguel, Sürder, Christian, Savran, Deniz, Scheit, Heiko, Schmidt, Konrad, Schulte, Hendrik, Simon, Haik, Simon, Johannes, Starostin, Viktor, Storck-Dutine, Sonja, Törnqvist, Hans Toshihide, Tanaka, Junki, Tengblad, Olof, Thomas, Benedikt, Trimarchi, Marina, Typel, Stefan, Varga, László, Volk, Klaus, Volknandt, Meiko, Wagner, Vadim, Wamers, Felix, Weigand, Mario, and Zanetti, Lorenzo

Abstract

10th Conference on Nuclear Physics in Astrophysics, NPA-X 2022, Geneva, Switzerland, 5 Sep 2022 - 9 Sep 2022; The European physical journal / Web of Conferences 279, 04003 (2023). doi:10.1051/epjconf/202327904003, Published by EDP Sciences, Les Ulis

Published
2023
Full Text
View/download PDF

8. A new Time-of-flight detector for the R$$^3$$B setup

Author

Heil, M., Kelić-Heil, A., Bott, L., Almusidi, T., Alvarez-Pol, H., Atar, L., Atkins, L., Aumann, T., Benlliure, J., Boretzky, K., Brückner, B., Cabanelas, P., Caesar, C., Casarejos, E., Cederkall, J., Chulkov, L., Corsi, A., Dueñas, J., Erbacher, P., Rodriguez, S. Escribano, Falduto, A., Feijoo, M., Frotscher, A., Frühauf, J., Gašparić, I., Borge, M. J. G., Gerbig, J., Gernhäuser, R., Gilbert, M., Glorius, J., Gnoffo, B., Göbel, K., Caamaño, D. Gonzalez, Grein, A., Hartig, A.-L., Heggen, H., Heine, M., Heinz, A., Holl, M., Homm, I., Horvat, A., Johansson, H. T., Jonson, B., Kalantar-Nayestanaki, N., Kamenyero, A., Khodaparast, A., Kiselev, O., Klenze, P., Knösel, M., Koch, K., Körper, D., Kröll, T., Kurtulgil, D., Kurz, N., Löher, B., Langer, C., Lehr, C., Litvinov, Y., Liu, H., Morales, S. Murillo, Nácher, E., Nilsson, T., Park, J., Paschalis, S., Pellegri, L., Perea, A., Petri, M., Pohl, T., Ponnath, L., Popočovski, R., Reifarth, R., Rhee, H.-B., Sanchez, J. L. Rodriguez, Rossi, D., Sürder, C., Sánchez-Benítez, A. M., Savran, D., Scheit, H., Simon, H., Slavkovská, Z., Storck-Dutine, S., Sun, Y., Törnqvist, H. T., Tanaka, J., Tengblad, O., Thomas, B., Varga, L., Volknandt, M., Wagner, V., Wamers, F., Zanetti, L., Aliotta, Marialuisa, Alkhazov, Georgy, Almusidi, Tahani, Alvarez-Pol, Hector, André, Paul, Assié, Marlène, Atar, Leyla, Atkins, Liam, Audouin, Laurent, Aumann, Thomas, Authelet, Gilles, Ayyad, Yassid, Bajzek, Martin, Barriere, Antoine, Beceiro-Novo, Saul, Belogurov, Sergey, Bemmerer, Daniel, Benlliure, Jose, Bertulani, Carlos, Bezbakh, Andrey, Blanchon, Guillaume, Boos, Carl Georg, Boretzky, Konstanze, Borge, Maria J., Borzov, Ivan, Bott, Lukas, Brückner, Benjamin, Cabanelas Eiras, Pablo, Caesar, Christoph, Calinescu, Stefana, Casarejos, Enrique, Catford, Wilton, Cederkall, Joakim, Chatillon, Audrey, Cherciu, Madalin Ilie, Chishti, M Majid Rauf, Chulkov, Leonid, Cirstian, Andreea, Corsi, Anna, Cortina-Gil, Dolores, Cravo, Edgar, Crespo, Raquel, Danilov, Andrey, de Angelis, Giacomo, De Filippo, Enrico, Diaz-Torres, Alexis, Dickel, Timo, Dobrovolsky, Alexander, Doornenbal, Pieter, Duer, Meytal, Egelhof, Peter, Elekes, Zoltan, Enders, Joachim, Erbacher, Philipp, Escribano Rodriguez, Sonia, Fahlander, Claes, Falduto, Ashton, Feijoo, Martina, Fernandez Ruiz, Daniel, Fomichev, Andrey, Fulop, Zsolt, Galaviz Redondo, Daniel, Galiana, Elisabet, García, Gabriel, García Távora, Vicente, Gasparic, Igor, Ge, Zhuang, Geissel, Hans, Geraci, Elena, Gerl, Jürgen, Gernhäuser, Roman, Gillibert, Alain, Glorius, Jan, Gnoffo, Brunilde, Göbel, Kathrin, Golovkov, Mikhail, Golovtsov, Victor, Golubev, Pavel, González Caamaño, David, Gorshkov, Alexander, Graña González, Antia, Gridnev, Anatoly, Gruzinskii, Nikolai, Guimaraes, Valdir, Harakeh, Muhsin N., Hartig, Anna-Lena, Heftrich, Tanja, Heggen, Henning, Heil, Michael, Heinz, Andreas, Hen, Or, Henrich, Corinna, Henriques, Ana, Hensel, Thomas, Holl, Matthias, Homm, Ilja, Horvat, Andrea, Horváth, Ákos, Hucka, Jan-Paul, Inglessi, Alexander, Jedele, Andrea, Jelavic Malenica, Desa, Jenegger, Tobias, Ji, Liancheng, Johansson, Håkan, Jonson, Björn, Jurado, Beatriz, Kahlbow, Julian, Kalantar-Nayestanaki, Nasser, Kamenyero, Armel, Kazantseva, Erika, Kelic-Heil, Aleksandra, Khanzadeev, Alexey, Kiselev, Oleg, Klenze, Philipp, Knyazev, Alexander, Koch, Karsten, Kogimtzis, Moschos, Kokubun, Kei, Korolev, Guerman, Körper, Daniel, Korsheninnikov, Alexey, Korten, Wolfram, Kozlenko, Nikolai, Krasilovskaja, Sabina, Kresan, Dmytro, Krivshich, Anatoly, Kröll, Thorsten, Krupko, Sergey, Kudaibergenova, Eleonora, Kunne Sohler, Dorottya, Kurtulgil, Deniz, Kurz, Nikolaus, Kuzmin, Evgeny, Kuznetsov, Viacheslav, Labiche, Marc, Lagni, Andrea, Langer, Christoph, Lányi, Zsombor, Lazarus, Ian, Le Fèvre, Arnaud, Leifels, Yvonne, Lepine-Szily, Alinka, Lewitowicz, Marek, Lihtar, Ivana, Linh, Bui, Litvinov, Yuri, Liu, Hongna, Löher, Bastian, Lommel, Bettina, Lorenz, Enis, Lukasik, Jerzy, Macchiavelli, Augusto, Maev, Evgeny, Maillertet, Charles, Maisuzenko, Dmitrii, Maj, Adam, Martorana, Nunzia Simona, Mauss, Benoît, Mayri, Christophe, Milhomens da Fonseca, Leandro, Morfouace, Pierre, Mozumdar, Nikhil, Mücher, Dennis, Murillo Morales, Silvia, Nacher, Enrique, Nikolskii, Evgenii, Nilsson, Thomas, Nociforo, Chiara, Nolden, Fritz, Nyman, Göran, Obertelli, Alexandre, Pagano, Emanuele Vincenzo, Panin, Valerii, Park, Joochun, Paschalis, Stefanos, Pei, Junchen, Perea, Angel, Petri, Marina, Piasetzky, Eli, Pietri, Stephane, Pirrone, Sara, Politi, Giuseppe, Pollacco, Emauel, Ponnath, Lukas, Potlog, Petru-Mihai, Prajapat, Rinku, Pritula, Roman, Qi, Hang, Rappold, Christophe, Reifarth, Rene, Revel, Aldric, Rhee, Han-Bum, Risitano, Fabio, Rodriguez Sanchez, Jose Luis, Rose, Luke, Rossi, Dominic, Rudigier, Matthias, Russotto, Paolo, Sánchez-Benítez, Ángel-Miguel, Sanjari, Shahab, Santamaria, Clementine, Sarantsev, Victor, Savran, Deniz, Scheidenberger, Christoph, Scheit, Heiko, Schmidt, Konrad, Simon, Haik, Simon, Johannes, Slavkovská, Zuzana, Slepnev, Roman, Sorlin, Olivier, Sousa, Tomás, Spiridon, Alexandra, Stan, Emil, Stanoiu, Mihai, Stefanescu, Alexandra, Stefanescu, Ionut, Storck-Dutine, Sonja, Stott, Aaron, Sun, Baohua, Sun, Yelei, Sürder, Christian, Taieb, Julien, Tanaka, Junki, Tanihata, Isao, Taniuchi, Ryo, Tengblad, Olof, Terekhin, Pavel, Teubig, Pamela, Törnqvist, Hans, Trache, Livius, Trautmann, Wolfgang, Trimarchi, Marina, Typel, Stefan, Uesaka, Tomohiro, Unsworth, Carl, Uvarov, Lev, Vandebrouck, Marine, Varga, Laszlo, Velardita, Simone, Velho, Paulo, Vencelj, Matjaz, Volknandt, Meiko, Volkov, Sergei, von Tresckow, Martin, Wagner, Andreas, Wamers, Felix, Wang, Yanzhao, Whitehead, Matthew, Wienholtz, Frank, Wimmer, Kathrin, Winkler, Martin, Xarepe, Manuel, Ye, Yanlin, Zacarias, Sabrina, Zamora Cardona, Juan Carlos, Zhang, Wei, Zhdanov, Andrei, Zhukov, Mikhail, Zilges, Andreas, Zuber, Kai, Département de Physique Nucléaire (ex SPhN) (DPHN), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut Pluridisciplinaire Hubert Curien (IPHC), Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Grand Accélérateur National d'Ions Lourds (GANIL), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), R3B, Federal Ministry of Education and Research (Germany), Helmholtz International Center for FAIR, Ministerio de Ciencia e Innovación (España), Xunta de Galicia, Agencia Estatal de Investigación (España), Swedish Research Council, Science and Technology Facilities Council (UK), Royal Society (UK), Projekt DEAL, Energy and Sustainability Research Institute Groni, and Nuclear Energy

Subjects
Nuclear and High Energy Physics, ddc:530, [PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]
Abstract

19 pags., 16 figs., 8 tabs., We present the design, prototype developments and test results of the new time-of-flight detector (ToFD) which is part of the R3B experimental setup at GSI and FAIR, Darmstadt, Germany. The ToFD detector is able to detect heavy-ion residues of all charges at relativistic energies with a relative energy precision σΔE/ ΔE of up to 1% and a time precision of up to 14 ps (sigma). Together with an elaborate particle-tracking system, the full identification of relativistic ions from hydrogen up to uranium in mass and nuclear charge is possible., This work received support from BMBF (05P19RFFN1, 05P15RDFN1, 05P19RDFN1) and HIC for FAIR. J.P. has been supported by the Institute for Basic Science (IBS-R031-D1). E.C. has been supported by the Ministry of Science and Innovation in Spain (PGC2018-099746-B-C22). J.L.R.S. thanks the support from the Regional Government of Galicia under the program of postdoctoral fellowships ED481B-2017-002 and ED481D-2021-018. O.T. has been supported by AEI/FEDER, UE project No. PID2019-104390GB-I00. G.B., A.H., H.T.J., B.J. and T.N. have been supported by the Swedish Research Council under contract 2017-03839. This work was supported by the Royal Society and UK STFC awards ST/L005727/1, ST/P003885/1.

Published
2022
Full Text
View/download PDF

9. The decay pattern of the Pygmy Dipole Resonance of ��������Ce

Author

Löher, Bastian, Savran, Deniz, Aumann, Thomas, Beller, Jacob, Bhike, Megha, Cooper, Nathan L., Derya, Vera, Duchêne, Marc, Endres, Janis, Hennig, Andreas, Humby, P., Isaak, Johann, Kelley, John H., Knörzer, M., Pietralla, Norbert A., Ponomarev, Vladimir, Romig, Christopher, Scheck, Marcus, Scheit, Heiko, Silva, Joel, Tonchev, Anton P., Tornow, Werner, Wamers, Felix, Weller, Henry R., Werner, Volker, and Zilges, Andreas

Abstract

The decay properties of the Pygmy Dipole Resonance (PDR) have been investigated in the semi-magic N=82 nucleus ��������Ce using a novel combination of nuclear resonance fluorescence and �������coincidence techniques. Branching ratios for transitions to low-lying excited states are determined in a direct and model-independent way both for individual excited states and for excitation energy intervals. Comparison of the experimental results to microscopic calculations in the quasi-particle phonon model exhibits an excellent agreement, supporting the observation that the Pygmy Dipole Resonance couples to the ground state as well as to low-lying excited states. A 10% mixing of the PDR and the [2+1��PDR]is extracted.

Published
2022
Full Text
View/download PDF

10. Nuclear structure of 82Kr and 82Se relevant for neutrinoless double-beta decay

Author

Gayer Udo, Werner Volker, Beck Tobias, Finch Sean, Kleemann Jörn, Krishichayan, Löher Bastian, Papst Oliver, Pietralla Norbert, Ries Philipp Christian, Savran Deniz, Weinert Michael, and Tornow Werner

Subjects
Physics, QC1-999
Abstract

Nuclear Resonance Fluorescence (NRF) experiments on the nuclei 82Kr and 82Se were performed, that are a candidates for a mother-daughter pair for the hypothetical neutrinoless double-beta (0νββ) decay. The experiment aimed at providing high-precision data to benchmark theoretical calculations of the nuclear matrix elements involved in this exotic decay mode. We have investigated the excitation energy range from 2.3MeV to 4.2MeV, where the nuclear scissors mode is expected to be located in nuclei of this mass region. Our experiment was able to constrain decay branches of the scissors mode down to a level of a few percents, comparable to previous experiments on heavy deformed 0νββ decay candidates. Reduced transition strengths of the magnetic dipole-excited states have been determined by a method that exploits the non-resonant background in the NRF spectra. They are compared to a calculation within the nuclear shell model for 82Se, which reveals their mixed orbital and spin character, hinting at a more complex microscopic structure of low-lying 1+ states.

Published
2018
Full Text
View/download PDF

11. Study of photon strength functions via (γ→, γ′, γ″) reactions at the γ3-setup

Author

Isaak Johann, Savran Deniz, Beck Tobias, Gayer Udo, Krishichayan, Löher Bastian, Pietralla Norbert, Scheck Marcus, Tornow Werner, Werner Volker, and Zilges Andreas

Subjects
Physics, QC1-999
Abstract

One of the basic ingredients for the modelling of the nucleosynthesis of heavy elements are so-called photon strength functions and the assumption of the Brink-Axel hypothesis. This hypothesis has been studied for many years by numerous experiments using different and complementary reactions. The present manuscript aims to introduce a model-independent approach to study photon strength functions via γ-γ coincidence spectroscopy of photoexcited states in 128Te. The experimental results provide evidence that the photon strength function extracted from photoabsorption cross sections is not in an overall agreement with the one determined from direct transitions to low-lying excited states.

Published
2018
Full Text
View/download PDF

12. Probing the E2 properties of the scissors mode with real photons

Author

Beck Tobias, Pietralla Norbert, Beller Jacob, Derya Vera, Löher Bastian, Savran Deniz, Tornow Werner, Werner Volker, and Zilges Andreas

Subjects
Physics, QC1-999
Abstract

The E2/M1 multipole mixing ratio δ1→2 of the 1+ sc → 2+ 1 γ-ray transition of 156Gd and 164Dy has been measured using the linearly polarized photon beams of the HIγS facility. The employed method of photonscattering experiments in combination with polarized, quasi-monochromatic beams and a dedicated detector setup is highly sensitive to the electric quadrupole-decay properties of the scissors mode.

Published
2018
Full Text
View/download PDF

13. NeuLAND: The high-resolution neutron time-of-flight spectrometer for R3B at FAIR

Author

R3B collaboration, Boretzky, Konstanze, Gašparić, Igor, Heil, Michael, Mayer, Jan, Heinz, Andreas, Caesar, Christoph, Kresan, Dmytro, Simon, Haik, Törnqvist, Hans Toshihide, Körper, Daniel, Alkhazov, G. D., Atar, Leyla, Aumann, Thomas, Bemmerer, Daniel, Bondarev, S. V., Bott, Lukas T., Chakraborty, Santosh, Cherciu, Madalin I., Chulkov, Leonid V., Ciobanu, Mircea, Datta, Ushasi, De Filippo, Enrico, Douma, Christiaan, Dreyer, Jörn, Elekes, Zoltán, Enders, Joachim, Galaviz Redondo, Daniel, Geraci, Elena Irene, Gnoffo, Brunilde, Göbel, Kathrin, Golovtsov, Victor L., González-Díaz, Diégo, Gruzinsky, N., Heftrich, Tanja, Heggen, Henning, Hehner, Jörg, Hensel, Thomas, Hoemann, Elena, Holl, Matthias, Horvat, Andrea, Horváth, Ákos, Ickert, Günter, Jelavić-Malenica, Deša, Johansson, Håkan T., Jonson, Björn, Kahlbow, Julian, Kalantar-Nayestanaki, Nasser, Kelić-Heil, Aleksandra, Mathias, Kempe, Koch, Karsten, Kozlenko, Nikolai, Krivshich, Anatoly G., Kurz, Nikolaus, Kouznetsov, Viacheslav A., Langer, Christoph, Leifels, Yvonne, Lihtar, Ivana, Löher, Bastian, Machado, Jorge, Martorana, Nunzia Simona, Miki, Kenjiro, Nilsson, Thomas, Orischin, E. M., Pagano, Emanuele Vincenzo, Pirrone, Sara, Politi, Giuseppe, Potlog, Petru-Mihai, Rahaman, Anisur, Reifarth, René, Rigollet, Catherine, Röder, Marko, Rossi, Dominic M., Russotto, Paolo, Savran, Deniz, Scheit, Heiko, Schindler, Fabia, Stach, Daniel, Stan, Emil, Stomvall Gill, J., Teubig, Pamela, Trimarchi, Marina, Uvarov, Lev, Volknandt, Meiko, Volkov, S., Wagner, Andreas, Wagner, Vladimír, Wranne, Staffan, Yakorev, Dmitry, Zanetti, Lorenzo, Zilges, Andreas, Zuber, Kai, R3B collaboration, Boretzky, Konstanze, Gašparić, Igor, Heil, Michael, Mayer, Jan, Heinz, Andreas, Caesar, Christoph, Kresan, Dmytro, Simon, Haik, Törnqvist, Hans Toshihide, Körper, Daniel, Alkhazov, G. D., Atar, Leyla, Aumann, Thomas, Bemmerer, Daniel, Bondarev, S. V., Bott, Lukas T., Chakraborty, Santosh, Cherciu, Madalin I., Chulkov, Leonid V., Ciobanu, Mircea, Datta, Ushasi, De Filippo, Enrico, Douma, Christiaan, Dreyer, Jörn, Elekes, Zoltán, Enders, Joachim, Galaviz Redondo, Daniel, Geraci, Elena Irene, Gnoffo, Brunilde, Göbel, Kathrin, Golovtsov, Victor L., González-Díaz, Diégo, Gruzinsky, N., Heftrich, Tanja, Heggen, Henning, Hehner, Jörg, Hensel, Thomas, Hoemann, Elena, Holl, Matthias, Horvat, Andrea, Horváth, Ákos, Ickert, Günter, Jelavić-Malenica, Deša, Johansson, Håkan T., Jonson, Björn, Kahlbow, Julian, Kalantar-Nayestanaki, Nasser, Kelić-Heil, Aleksandra, Mathias, Kempe, Koch, Karsten, Kozlenko, Nikolai, Krivshich, Anatoly G., Kurz, Nikolaus, Kouznetsov, Viacheslav A., Langer, Christoph, Leifels, Yvonne, Lihtar, Ivana, Löher, Bastian, Machado, Jorge, Martorana, Nunzia Simona, Miki, Kenjiro, Nilsson, Thomas, Orischin, E. M., Pagano, Emanuele Vincenzo, Pirrone, Sara, Politi, Giuseppe, Potlog, Petru-Mihai, Rahaman, Anisur, Reifarth, René, Rigollet, Catherine, Röder, Marko, Rossi, Dominic M., Russotto, Paolo, Savran, Deniz, Scheit, Heiko, Schindler, Fabia, Stach, Daniel, Stan, Emil, Stomvall Gill, J., Teubig, Pamela, Trimarchi, Marina, Uvarov, Lev, Volknandt, Meiko, Volkov, S., Wagner, Andreas, Wagner, Vladimír, Wranne, Staffan, Yakorev, Dmitry, Zanetti, Lorenzo, Zilges, Andreas, and Zuber, Kai

Abstract

NeuLAND (New Large-Area Neutron Detector) is the next-generation neutron detector for the R3B (Reactions with Relativistic Radioactive Beams) experiment at FAIR (Facility for Antiproton and Ion Research). NeuLAND detects neutrons with energies from 100 to 1000 MeV, featuring a high detection efficiency, a high spatial and time resolution, and a large multi-neutron reconstruction efficiency. This is achieved by a highly granular design of organic scintillators: 3000 individual submodules with a size of 5 × 5 × 250 cm3 are arranged in 30 double planes with 100 submodules each, providing an active area of 250 × 250 cm2 and a total depth of 3 m. The spatial resolution due to the granularity together with a time resolution of 150 ps ensures high-resolution capabilities. In conjunction with calorimetric properties, a multi-neutron reconstruction efficiency of 50% to 70% for four-neutron events will be achieved, depending on both the emission scenario and the boundary conditions allowed for the reconstruction method. We present in this paper the final design of the detector as well as results from test measurements and simulations on which this design is based.

Published
2021

14. Probing the Z = 6 spin-orbit shell gap with (p,2p) quasi-free scattering reactions

Author

Syndikus, Ina, Petri, Marina, Macchiavelli, Augusto O., Paschalis, Stefanos, Bertulani, Carlos A., Aumann, Thomas, Álvarez-Pol, Héctor, Atar, Leyla, Beceiro-Novo, Saul, Benlliure Anaya, Jose Fernando, Boillos Betete, Juan Manuel, Boretzky, Konstanze, Garcia Borge, Maria José, Brown, B. Alex, Caamaño, Manuel, Caesar, Christoph, Casarejos Ruiz, Enrique, Catford, Wilton N., Cederkäll, Joakim, Chakraborty, S., Chulkov, Leonid V., Cortina Gil, Dolores, Cravo, Edgar, Crespo, Raquel, Datta Pramanik, Ushasi, Dillmann, Iris, Díaz Fernández, Paloma, Elekes, Zoltán, Enders, Joachim, Farinon, Fabio, Fraile Prieto, Luis Mario, Galaviz Redondo, Daniel, Geissel, Hans, Gernhäuser, Roman, Golubev, Pavel, Göbel, Kathrin, Heil, Michael, Heine, Marcel, Heinz, Andreas, Henriques Correia, Ana Maria, Holl, Matthias, Johansson, Håkan T., Jonson, Björn, Kalantar-Nayestanaki, Nasser, Kanungo, Rituparna, Kelic-Heil, Aleksandra, Kröll, Thorsten, Kurz, Nikolaus, Langer, Christoph, Le Bleis, Tudi, Machado, Jorge, Marganiec-Gałązka, Justyna, Nácher González, Enrique, Nilsson, Thomas, Nociforo, Chiara, Panin, Valerii, Perea Martinez, Angel, Pietri, Stephane, Plag, Ralf, Rahaman, Anisur, Reifarth, René, Revel, Aldric, Ribeiro Jimenez, Guillermo, Rigollet, Catherine, Rossi, Dominic M., Savran, Deniz, Scheit, Heiko, Simon, Haik, Sorlin, Olivier, Tengblad, Olof, Togano, Yasuhiro, Vandebrouck, Marine, Volkov, Vasily, Wamers, Felix, Wheldon, Carl, Wilson, Gemma Louise, Winfield, John S., Weick, Helmut, Woods, Philip John, Yakorev, Dmitry, Zhukov, Mikhail V., Zilges, Andreas, Zuber, Kai, Syndikus, Ina, Petri, Marina, Macchiavelli, Augusto O., Paschalis, Stefanos, Bertulani, Carlos A., Aumann, Thomas, Álvarez-Pol, Héctor, Atar, Leyla, Beceiro-Novo, Saul, Benlliure Anaya, Jose Fernando, Boillos Betete, Juan Manuel, Boretzky, Konstanze, Garcia Borge, Maria José, Brown, B. Alex, Caamaño, Manuel, Caesar, Christoph, Casarejos Ruiz, Enrique, Catford, Wilton N., Cederkäll, Joakim, Chakraborty, S., Chulkov, Leonid V., Cortina Gil, Dolores, Cravo, Edgar, Crespo, Raquel, Datta Pramanik, Ushasi, Dillmann, Iris, Díaz Fernández, Paloma, Elekes, Zoltán, Enders, Joachim, Farinon, Fabio, Fraile Prieto, Luis Mario, Galaviz Redondo, Daniel, Geissel, Hans, Gernhäuser, Roman, Golubev, Pavel, Göbel, Kathrin, Heil, Michael, Heine, Marcel, Heinz, Andreas, Henriques Correia, Ana Maria, Holl, Matthias, Johansson, Håkan T., Jonson, Björn, Kalantar-Nayestanaki, Nasser, Kanungo, Rituparna, Kelic-Heil, Aleksandra, Kröll, Thorsten, Kurz, Nikolaus, Langer, Christoph, Le Bleis, Tudi, Machado, Jorge, Marganiec-Gałązka, Justyna, Nácher González, Enrique, Nilsson, Thomas, Nociforo, Chiara, Panin, Valerii, Perea Martinez, Angel, Pietri, Stephane, Plag, Ralf, Rahaman, Anisur, Reifarth, René, Revel, Aldric, Ribeiro Jimenez, Guillermo, Rigollet, Catherine, Rossi, Dominic M., Savran, Deniz, Scheit, Heiko, Simon, Haik, Sorlin, Olivier, Tengblad, Olof, Togano, Yasuhiro, Vandebrouck, Marine, Volkov, Vasily, Wamers, Felix, Wheldon, Carl, Wilson, Gemma Louise, Winfield, John S., Weick, Helmut, Woods, Philip John, Yakorev, Dmitry, Zhukov, Mikhail V., Zilges, Andreas, and Zuber, Kai

Abstract

The evolution of the traditional nuclear magic numbers away from the valley of stability is an active field of research. Experimental efforts focus on providing key spectroscopic information that will shed light into the structure of exotic nuclei and understanding the driving mechanism behind the shell evolution. In this work, we investigate the spin-orbit shell gap towards the neutron dripline. To do so, we employed (p,2p) quasi-free scattering reactions to measure the proton component of the state of 16,18,20C. The experimental findings support the notion of a moderate reduction of the proton spin-orbit splitting, at variance to recent claims for a prevalent magic number towards the neutron dripline.

Published
2020

16. The Pygmy Dipole Resonance – past, presence, and future

Author

Zilges Andreas and Savran Deniz

Subjects
Physics, QC1-999
Abstract

The advent of improved experimental and theoretical techniques has brought a lot of attention to the electric dipole (E1) response of atomic nuclei in the last decade. The extensive studies have led to the observation and interpretation of a concentration of E1 strength energetically below the Giant Dipole Resonance in many nuclei. This phenomenon is commonly denoted as Pygmy Dipole Resonance (PDR). This contribution will summarize the most important results obtained using different experimental probes, define the challenges to gain a deeper understanding of the excitations, and discuss the newest experimental developments.

Published
2015
Full Text
View/download PDF

17. Mixed-symmetry octupole and hexadecapole excitations in N=52 isotones

Author

Hennig Andreas, Spieker Mark, Werner Volker, Ahn Tan, Anagnostatou Vassia, Cooper Nathan, Derya Vera, Elvers Michael, Endres Janis, Goddard Phil, Heinz Andreas, Hughes Richard O., Ilie Gabriela, Mineva Milena N., Pickstone Simon G., Petkov Pavel, Pietralla Norbert, Radeck Desirée, Ross Tim J., Savran Deniz, and Zilges Andreas

Subjects
Physics, QC1-999
Abstract

In addition to the well-established quadrupole mixed-symmetry states, octupole and hexadecapole excitations with mixed-symmetry character have been recently proposed for the N = 52 isotones 92Zr and 94Mo. We performed two inelastic proton-scattering experiments to study this kind of excitations in the heaviest stable N = 52 isotone 96Ru. From the combined experimental data of both experiments absolute transition strengths were extracted.

Published
2015
Full Text
View/download PDF

18. Coulomb dissociation of 16O into 4He and 12C

Author

Göbel, Kathrin, primary, Heil, Michael, additional, Bott, Lukas, additional, Brandenburg, Leonard, additional, Caesar, Christoph, additional, Deuter, Isabell, additional, Grein, Alexander, additional, Keliç-Heil, Aleksandra, additional, Körper, Daniel, additional, Löher, Bastian, additional, Reifarth, René, additional, Savran, Deniz, additional, Schulte, Hendrik, additional, Simon, Haik, additional, Törnqvist, Hans, additional, Almusidi, Tahani, additional, Álvarez-Pol, Héctor, additional, Atkins, Liam, additional, Aumann, Thomas, additional, Bemmerer, Daniel, additional, Benlliure, José, additional, Boretzky, Konstanze, additional, Brückner, Benjamin, additional, Eiras, Pablo Cabanelas, additional, Casarejos, Enrique, additional, Cederkall, Joakim, additional, Chulkov, Leonid, additional, Cortina-Gil, Dolores, additional, Danilov, rey, additional, Erbacher, Philipp, additional, Rodriguez, Sonia Escribano, additional, Fülöp, Zsolt, additional, Falduto, Ashton, additional, Fiebiger, Stefan, additional, Gašparić, Igor, additional, Borge, Maria José Garcia, additional, Gernhäuser, Roman, additional, Glorius, Jan, additional, Caamaño, David Gonzales, additional, Hartig, Anna-Lena, additional, Heftrich, Tanja, additional, Heggen, Henning, additional, Heine, Marcel, additional, Heinz, reas, additional, Hensel, Thomas, additional, Holl, Matthias, additional, Johansson, Håkan T., additional, Jonson, Björn, additional, Kalantar-Nayestanaki, Nasser, additional, Kamenyero, Armel, additional, Khasawneh, Kafa, additional, Kiselev, Oleg, additional, Klenze, Philipp, additional, Kohls, Marvin, additional, Kröll, Thorsten, additional, Kresan, Dmytro, additional, Kurtulgil, Deniz, additional, Kurz, Nikolaus, additional, Langer, Christoph, additional, Lehr, Christopher, additional, Litvinov, Yuri, additional, Lorenz, Enis, additional, Morales, Silvia Murillo, additional, Nacher, Enrique, additional, Nilsson, Thomas, additional, Park, Joochun, additional, Paschalis, Stefanos, additional, Perea, Angel, additional, Petri, Marina, additional, Plag, Ralf, additional, Ponnath, Lukas, additional, Popocovski, Romana, additional, Reich, Markus, additional, Rhee, Han-Bum, additional, Sanchez, Jose Luis Rodriguez, additional, Rossi, Dominic, additional, Scheit, Heiko, additional, Schmidt, Konrad, additional, Slavkovská, Zuzana, additional, Starostin, Viktor, additional, Storck, Sonja, additional, Sürder, Christian, additional, Tanaka, Junki, additional, Tengblad, Olof, additional, Thomas, Benedikt, additional, Typel, Stefan, additional, Varga, László, additional, Volk, Klaus, additional, Volknandt, Meiko, additional, Wagner, Vadim, additional, Wamers, Felix, additional, Weigand, Mario, additional, and Zanetti, Lorenzo, additional

Published
2020
Full Text
View/download PDF

19. Experimental results on the Pygmy Dipole Resonance

Author

Savran Deniz

Subjects
Physics, QC1-999
Abstract

The so-called Pygmy Dipole Resonance, an additional structure of low-lying electric dipole strength, has attracted strong interest in the last years. Different experimental approaches have been used in the last decade in order to investigate this new interesting nuclear excitation mode. In this contribution an overview on the available experimental data is given.

Published
2014
Full Text
View/download PDF

20. Quasi-free neutron and proton knockout reactions from light nuclei in a wide neutron-to-proton asymmetry range

Author

Holl, Matthias, Panin, Valerii, Álvarez-Pol, Héctor, Atar, Leyla, Aumann, Thomas, Beceiro-Novo, Saul, Benlliure Anaya, Jose Fernando, Bertulani, Carlos A., Boillos Betete, Juan Manuel, Boretzky, Konstanze, Caamaño, Manuel, Caesar, Christoph, Casarejos Ruiz, Enrique, Catford, Wilton N., Cederkäll, Joakim, Chulkov, Leonid V., Cortina Gil, Dolores, Cravo, Edgar, Dillmann, Iris, Díaz Fernández, Paloma, Elekes, Zoltán, Enders, Joachim, Fraile Prieto, Luis Mario, Galaviz Redondo, Daniel, Gernhäuser, Roman, Golubev, Pavel, Heftrich, Tanja, Heil, Michael, Heine, Marcel, Heinz, Andreas, Henriques Correia, Ana Maria, Johansson, Håkan T., Jonson, Björn, Kalantar-Nayestanaki, Nasser, Kanungo, Rituparna, Kelic-Heil, Aleksandra, Kröll, Thorsten, Kurz, Nikolaus, Langer, Christoph, Le Bleis, Tudi, Lindberg, Simon, Machado, Jorge, Nácher González, Enrique, Najafi, Mohammad Ali, Nilsson, Thomas, Nociforo, Chiara, Paschalis, Stefanos, Petri, Marina, Reifarth, René, Ribeiro Jimenez, Guillermo, Rigollet, Catherine, Rossi, Dominic M., Savran, Deniz, Scheit, Heiko, Simon, Haik, Sorlin, Olivier, Syndikus, Ina, Tengblad, Olof, Togano, Yasuhiro, Vandebrouck, Marine, Velho, Paulo, Wamers, Felix, Weick, Helmut, Wheldon, Carl, Wilson, Gemma Louise, Winfield, John S., Woods, Philip John, Zhukov, Mikhail V., Zuber, Kai, Holl, Matthias, Panin, Valerii, Álvarez-Pol, Héctor, Atar, Leyla, Aumann, Thomas, Beceiro-Novo, Saul, Benlliure Anaya, Jose Fernando, Bertulani, Carlos A., Boillos Betete, Juan Manuel, Boretzky, Konstanze, Caamaño, Manuel, Caesar, Christoph, Casarejos Ruiz, Enrique, Catford, Wilton N., Cederkäll, Joakim, Chulkov, Leonid V., Cortina Gil, Dolores, Cravo, Edgar, Dillmann, Iris, Díaz Fernández, Paloma, Elekes, Zoltán, Enders, Joachim, Fraile Prieto, Luis Mario, Galaviz Redondo, Daniel, Gernhäuser, Roman, Golubev, Pavel, Heftrich, Tanja, Heil, Michael, Heine, Marcel, Heinz, Andreas, Henriques Correia, Ana Maria, Johansson, Håkan T., Jonson, Björn, Kalantar-Nayestanaki, Nasser, Kanungo, Rituparna, Kelic-Heil, Aleksandra, Kröll, Thorsten, Kurz, Nikolaus, Langer, Christoph, Le Bleis, Tudi, Lindberg, Simon, Machado, Jorge, Nácher González, Enrique, Najafi, Mohammad Ali, Nilsson, Thomas, Nociforo, Chiara, Paschalis, Stefanos, Petri, Marina, Reifarth, René, Ribeiro Jimenez, Guillermo, Rigollet, Catherine, Rossi, Dominic M., Savran, Deniz, Scheit, Heiko, Simon, Haik, Sorlin, Olivier, Syndikus, Ina, Tengblad, Olof, Togano, Yasuhiro, Vandebrouck, Marine, Velho, Paulo, Wamers, Felix, Weick, Helmut, Wheldon, Carl, Wilson, Gemma Louise, Winfield, John S., Woods, Philip John, Zhukov, Mikhail V., and Zuber, Kai

Abstract

The quasi-free scattering reactions 11C(p, 2p) and 10,11,12C(p, pn) have been studied in inverse kinematics at beam energies of 300–400 MeV/u at the R3B-LAND setup. The outgoing proton-proton and protonneutron pairs were detected in coincidence with the reaction fragments in kinematically complete measurements. The efficiency to detect these pairs has been obtained from GEANT4 simulations which were tested using the 12C(p, 2p) and 12C(p, pn) reactions. Experimental cross sections and momentum distributions have been obtained and compared to DWIA calculations based on eikonal theory. The new results reported here are combined with previously published cross sections for quasi-free scattering from oxygen and nitrogen isotopes and together they enable a systematic study of the reduction of singleparticle strength compared to predictions of the shell model over a wide neutron-to-proton asymmetry range. The combined reduction factors show a weak or no dependence on isospin asymmetry, in contrast to the strong dependency reported in nucleon-removal reactions induced by nuclear targets at lower energies. However, the reduction factors for (p, 2p) are found to be ’significantly smaller than for (p, pn) reactions for all investigated nuclei.

Published
2019

21. Quasifree (p, 2p) reactions on oxygen isotopes: observation of isospin independence of the reduced single-particle strength

Author

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

Abstract

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.

Published
2018

22. Capture cross sections on unstable nuclei

Author

Tonchev, Anton A.P., Escher, Jutta, Scielzo, Nicholas, Bedrossian, Peter, Ilieva, R.S., Humby, P., Cooper, Nigel N.R., Goddard, Philip P.M., Werner, Volker, Tornow, Werner, Rusev, Gencho, Kelley, John J.H., Pietralla, Norbert, Scheck, M, Savran, Deniz, Löher, Bastian, Yates, Steven S.W., Crider, Benjamin B.P., Peters, E.E., Tsoneva, Nadia, Goriely, Stéphane, Tonchev, Anton A.P., Escher, Jutta, Scielzo, Nicholas, Bedrossian, Peter, Ilieva, R.S., Humby, P., Cooper, Nigel N.R., Goddard, Philip P.M., Werner, Volker, Tornow, Werner, Rusev, Gencho, Kelley, John J.H., Pietralla, Norbert, Scheck, M, Savran, Deniz, Löher, Bastian, Yates, Steven S.W., Crider, Benjamin B.P., Peters, E.E., Tsoneva, Nadia, and Goriely, Stéphane

Abstract

Accurate neutron-capture cross sections on unstable nuclei near the line of beta stability are crucial for understanding the s-process nucleosynthesis. However, neutron-capture cross sections for short-lived radionuclides are difficult to measure due to the fact that the measurements require both highly radioactive samples and intense neutron sources. Essential ingredients for describing the γ decays following neutron capture are the γ-ray strength function and level densities. We will compare different indirect approaches for obtaining the most relevant observables that can constrain Hauser-Feshbach statistical-model calculations of capture cross sections. Specifically, we will consider photon scattering using monoenergetic and 100% linearly polarized photon beams. Challenges that exist on the path to obtaining neutron-capture cross sections for reactions on isotopes near and far from stability will be discussed., SCOPUS: cp.p, ND 2016: International Conference on Nuclear Data for Science and Technology, info:eu-repo/semantics/published

Published
2017

23. Capture cross sections on unstable nuclei

Author

Tonchev, Anton P., Escher, Jutta, Scielzo, Nicholas, Bedrossian, Peter, Ilieva, R.S., Humby, P., Cooper, Nigel N.R., Goddard, Philip P.M., Werner, Volker, Tornow, Werner, Rusev, Gencho, Kelley, John J.H., Pietralla, Norbert, Scheck, M, Savran, Deniz, Löher, Bastian, Yates, S.W., Crider, Benjamin B.P., Peters, E.E., Tsoneva, Nadia, Goriely, Stéphane, Tonchev, Anton P., Escher, Jutta, Scielzo, Nicholas, Bedrossian, Peter, Ilieva, R.S., Humby, P., Cooper, Nigel N.R., Goddard, Philip P.M., Werner, Volker, Tornow, Werner, Rusev, Gencho, Kelley, John J.H., Pietralla, Norbert, Scheck, M, Savran, Deniz, Löher, Bastian, Yates, S.W., Crider, Benjamin B.P., Peters, E.E., Tsoneva, Nadia, and Goriely, Stéphane

Abstract

info:eu-repo/semantics/published

Published
2017

24. Coulomb dissociation of N-20,N-21

Author

Roeder, Marko, Adachi, Tatsuya, Aksyutina, Yulia, Alcantara, Juan, Altstadt, Sebastian, Alvarez-Pol, Hector, Ashwood, Nicholas, Atar, Leyla, Aumann, Thomas, Avdeichikov, Vladimir, Barr, M, Beceiro, Saul, Bemmerer, Daniel, Benlliure, Jose, Bertulani, Carlos, Boretzky, Konstanze, Borge, Maria JG, Burgunder, G, Caamano, Manuel, Caesar, Christoph, Casarejos, Enrique, Catford, Wilton, Cederkall, Joakim, Chakraborty, S, Chartier, Marielle, Chulkov, Leonid, Cortina-Gil, Dolores, Crespo, Raquel, Pramanik, Ushasi Datta, Diaz-Fernandez, Paloma, Dillmann, Iris, Elekes, Zoltan, Enders, Joachim, Ershova, Olga, Estrade, A, Farinon, F, Fraile, Luis M, Freer, Martin, Freudenberger, M, Fynbo, Hans, Galaviz, Daniel, Geissel, Hans, Gernhaeuser, Roman, Goebel, Kathrin, Golubev, Pavel, Diaz, D Gonzalez, Hagdahl, Julius, Heftrich, Tanja, Heil, Michael, Heine, Marcel, Heinz, Andreas, Henriques, Ana, Holl, Matthias, Ickert, G, Ignatov, Alexander, Jakobsson, Bo, Johansson, Hakan, Jonson, Bjorn, Kalantar-Nayestanaki, Nasser, Kanungo, Rituparna, Kelic-Heil, Aleksandra, Knoebel, Ronja, Kroell, Thorsten, Kruecken, Reiner, Kurcewicz, J, Kurz, Nikolaus, Labiche, Marc, Langer, Christoph, Le Bleis, Tudi, Lemmon, Roy, Lepyoshkina, Olga, Lindberg, Simon, Machado, Jorge, Marganiec, Justyna, Mostazo Caro, Magdalena, Movsesyan, Alina, Najafi, Mohammad Ali, Nilsson, Thomas, Nociforo, Chiara, Panin, Valerii, Paschalis, Stefanos, Perea, Angel, Petri, Marina, Pietri, S, Plag, Ralf, Prochazka, A, Rahaman, Md Anisur, Rastrepina, Ganna, Reifarth, Rene, Ribeiro, Guillermo, Ricciardi, M Valentina, Rigollet, Catherine, Riisager, Karsten, Rossi, Dominic, del Rio Saez, Jose Sanchez, Savran, Deniz, Scheit, Heiko, Simon, Haik, Sorlin, Olivier, Stoica, V, Streicher, Branislav, Taylor, Jon, Tengblad, Olof, Terashima, Satoru, Thies, Ronja, Togano, Yasuhiro, Uberseder, Ethan, Van de Walle, J, Velho, Paulo, Volkov, Vasily, Wagner, Andreas, Wamers, Felix, Weick, Helmut, Weigand, Mario, Wheldon, Carl, Wilson, G, Wimmer, Christine, Winfield, JS, Woods, Philip, Yakorev, Dmitry, Zhukov, Mikhail, Zilges, Andreas, Zuber, Kai, and Collaboration, R3B

Published
2016

25. Nuclear structure of 82Kr and 82Se relevant for neutrinoless double-beta decay.

Author

Arsenyev, N., Bezbakh, A., Rogov, I., Shneidman, T., Vdovin, A., Gayer, Udo, Werner, Volker, Beck, Tobias, Finch, Sean, Kleemann, Jörn, Krishichayan, Löher, Bastian, Papst, Oliver, Pietralla, Norbert, Ries, Philipp Christian, Savran, Deniz, Weinert, Michael, and Tornow, Werner

Subjects
NUCLEAR structure, NEUTRINOLESS double beta decay, NUCLEAR resonance reactions, NUCLEAR physics experiments, NUCLEAR matrix
Abstract

Nuclear Resonance Fluorescence (NRF) experiments on the nuclei 82Kr and 82Se were performed, that are a candidates for a mother-daughter pair for the hypothetical neutrinoless double-beta (0νββ) decay. The experiment aimed at providing high-precision data to benchmark theoretical calculations of the nuclear matrix elements involved in this exotic decay mode. We have investigated the excitation energy range from 2.3MeV to 4.2MeV, where the nuclear scissors mode is expected to be located in nuclei of this mass region. Our experiment was able to constrain decay branches of the scissors mode down to a level of a few percents, comparable to previous experiments on heavy deformed 0νββ decay candidates. Reduced transition strengths of the magnetic dipole-excited states have been determined by a method that exploits the non-resonant background in the NRF spectra. They are compared to a calculation within the nuclear shell model for 82Se, which reveals their mixed orbital and spin character, hinting at a more complex microscopic structure of low-lying 1+ states. [ABSTRACT FROM AUTHOR]

Published
2018

26. Coulomb and nuclear excitations of narrow resonances in 17Ne

Author

Marganiec, Justyna, Wamers, Felix, Aksouh, Farouk, Aksyutina, Yuliya, Álvarez-Pol, Héctor, Aumann, Thomas, Beceiro-Novo, Saul, Bertulani, Carlos A., Boretzky, Konstanze, Garcia Borge, Maria José, Chartier, Marielle, Chatillon, Audrey, Chulkov, Leonid V., Cortina Gil, Dolores, Emling, Hans, Ershova, Olga, Fraile Prieto, Luis Mario, Fynbo, Hans Otto Uldall, Galaviz Redondo, Daniel, Geissel, Hans, Heil, Michael, Hoffmann, Dieter H. H., Hoffmann, Jan, Johansson, Håkan T., Jonson, Björn, Karagiannis, Christos, Kiselev, Oleg A., Kratz, Jens-Volker, Kulessa, Reinhard, Kurz, Nikolaus, Langer, Christoph, Lantz, Mattias, Le Bleis, Tudi, Lemmon, Roy Crawford, Litvinov, Yuri A., Mahata, Kripamay, Müntz, Christian, Nilsson, Thomas, Nociforo, Chiara, Nyman, Göran Hugo, Ott, Wolfgang, Panin, Valerii, Paschalis, Stefanos, Perea Martinez, Angel, Plag, Ralf, Reifarth, René, Richter, Achim, Rodriguez-Tajes, Carme, Rossi, Dominic M., Riisager, Karsten, Savran, Deniz, Schrieder, Gerhard, Simon, Haik, Stroth, Joachim, Sümmerer, Klaus, Tengblad, Olof, Typel, Stefan, Weick, Helmut, Wiescher, Michael, Wimmer, Christine, Marganiec, Justyna, Wamers, Felix, Aksouh, Farouk, Aksyutina, Yuliya, Álvarez-Pol, Héctor, Aumann, Thomas, Beceiro-Novo, Saul, Bertulani, Carlos A., Boretzky, Konstanze, Garcia Borge, Maria José, Chartier, Marielle, Chatillon, Audrey, Chulkov, Leonid V., Cortina Gil, Dolores, Emling, Hans, Ershova, Olga, Fraile Prieto, Luis Mario, Fynbo, Hans Otto Uldall, Galaviz Redondo, Daniel, Geissel, Hans, Heil, Michael, Hoffmann, Dieter H. H., Hoffmann, Jan, Johansson, Håkan T., Jonson, Björn, Karagiannis, Christos, Kiselev, Oleg A., Kratz, Jens-Volker, Kulessa, Reinhard, Kurz, Nikolaus, Langer, Christoph, Lantz, Mattias, Le Bleis, Tudi, Lemmon, Roy Crawford, Litvinov, Yuri A., Mahata, Kripamay, Müntz, Christian, Nilsson, Thomas, Nociforo, Chiara, Nyman, Göran Hugo, Ott, Wolfgang, Panin, Valerii, Paschalis, Stefanos, Perea Martinez, Angel, Plag, Ralf, Reifarth, René, Richter, Achim, Rodriguez-Tajes, Carme, Rossi, Dominic M., Riisager, Karsten, Savran, Deniz, Schrieder, Gerhard, Simon, Haik, Stroth, Joachim, Sümmerer, Klaus, Tengblad, Olof, Typel, Stefan, Weick, Helmut, Wiescher, Michael, and Wimmer, Christine

Abstract

New experimental data for dissociation of relativistic 17Ne projectiles incident on targets of lead, carbon, and polyethylene targets at GSI are presented. Special attention is paid to the excitation and decay of narrow resonant states in 17Ne. Distributions of internal energy in the three-body system have been determined together with angular and partial-energy correlations between the decay products in different energy regions. The analysis was done using existing experimental data on 17Ne and its mirror nucleus 17N. The isobaric multiplet mass equation is used for assignment of observed resonances and their spins and parities. A combination of data from the heavy and light targets yielded cross sections and transition probabilities for the Coulomb excitations of the narrow resonant states. The resulting transition probabilities provide information relevant for a better understanding of the 17Ne structure.

Published
2016

28. The Pygmy Dipole Resonance - past, presence, and future

Author

International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Zilges, Andreas, Savran, Deniz, International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Zilges, Andreas, and Savran, Deniz

Abstract

The advent of improved experimental and theoretical techniques has brought a lot of attention to the electric dipole (E1) response of atomic nuclei in the last decade. The extensive studies have led to the observation and interpretation of a concentration of E1 strength energetically below the Giant Dipole Resonance in many nuclei. This phenomenon is commonly denoted as Pygmy Dipole Resonance (PDR). This contribution will summarize the most important results obtained using different experimental probes, define the challenges to gain a deeper understanding of the excitations, and discuss the newest experimental developments.

Published
2015

29. Dipole strength distributions from HIGS Experiments

Author

International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Werner, Volker, Cooper, Nathan, Goddard, Phil M., Humby, Peter, Ilieva, Ralista S., Rusev, Gencho, Beller, Jacob, Bernards, Christian, Crider, Benjamin P., Isaak, Johann, Kelley, John H., Kwan, Elaine, Löher, Bastian, Peters, Erin E., Pietralla, Norbert, Romig, Christopher, Savran, Deniz, Scheck, Marcus, Tonchev, Anton P., Tornow, Werner, Yates, Steven W., Zweidinger, Markus, International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Werner, Volker, Cooper, Nathan, Goddard, Phil M., Humby, Peter, Ilieva, Ralista S., Rusev, Gencho, Beller, Jacob, Bernards, Christian, Crider, Benjamin P., Isaak, Johann, Kelley, John H., Kwan, Elaine, Löher, Bastian, Peters, Erin E., Pietralla, Norbert, Romig, Christopher, Savran, Deniz, Scheck, Marcus, Tonchev, Anton P., Tornow, Werner, Yates, Steven W., and Zweidinger, Markus

Abstract

A series of photon scattering experiments has been performed on the double-beta decay partners 76Ge and 76Se, in order to investigate their dipole response up to the neutron separation threshold. Gamma-ray beams from bremsstrahlung at the S-DALINAC and from Compton-backscattering at HIGS have been used to measure absolute cross sections and parities of dipole excited states, respectively. The HIGS data allows for indirect measurement of averaged branching ratios, which leads to significant corrections in the observed excitation cross sections. Results are compared to statistical calculations, to test photon strength functions and the Axel-Brink hypothesis.

Published
2015

30. Mixed-symmetry octupole and hexadecapole excitations in N=52 isotones

Author

International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Hennig, Andreas, Spieker, Mark-Christoph, Werner, Volker, Ahn, Tan, Anagnostatou, Vassia, Cooper, Nathan, Derya, Vera, Elvers, Michael, Endres, Janis, Goddard, Phil, Heinz, Andreas, Hughes, Richard O., Ilie, Gabriela, Mineva, Milena N., Pickstone, Simon G., Petkov, Pavel, Pietralla, Norbert, Radeck, Désirée, Ross, Tim J., Savran, Deniz, Zilges, Andreas, International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Hennig, Andreas, Spieker, Mark-Christoph, Werner, Volker, Ahn, Tan, Anagnostatou, Vassia, Cooper, Nathan, Derya, Vera, Elvers, Michael, Endres, Janis, Goddard, Phil, Heinz, Andreas, Hughes, Richard O., Ilie, Gabriela, Mineva, Milena N., Pickstone, Simon G., Petkov, Pavel, Pietralla, Norbert, Radeck, Désirée, Ross, Tim J., Savran, Deniz, and Zilges, Andreas

Abstract

In addition to the well-established quadrupole mixed-symmetry states, octupole and hexadecapole excitations with mixed-symmetry character have been recently proposed for the N = 52 isotones 92Zr and 94Mo. We performed two inelastic proton-scattering experiments to study this kind of excitations in the heaviest stable N = 52 isotone 96Ru. From the combined experimental data of both experiments absolute transition strengths were extracted.

Published
2015

31. QPM analysis of 205TI nuclear excitations below the giant dipole resonance

Author

International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Benouaret, Nadia, Beller, Jacob, Isaak, Johann, Kelley, John H., Pai, Haridas, Pietralla, Norbert, Ponomarev, V. Yu., Raut, Rajarshi, Romig, Christopher, Rusev, Gencho, Savran, Deniz, Scheck, Marcus, Schnorrenberger, Linda, Sonnabend, Kerstin, Tonchev, Anton P., Tornow, Werner, Weller, Henry R., Zweidinger, Markus, International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Benouaret, Nadia, Beller, Jacob, Isaak, Johann, Kelley, John H., Pai, Haridas, Pietralla, Norbert, Ponomarev, V. Yu., Raut, Rajarshi, Romig, Christopher, Rusev, Gencho, Savran, Deniz, Scheck, Marcus, Schnorrenberger, Linda, Sonnabend, Kerstin, Tonchev, Anton P., Tornow, Werner, Weller, Henry R., and Zweidinger, Markus

Abstract

We analysed our experimental recent findings of the dipole response of the odd-mass stable nucleus 205Tl within the quasi-particle phonon model. Using the phonon basis constructed for the neighbouring 204Hg and wave function configurations for 205Tl consisting of a mixture of quasiparticle ⊗ N-phonon configurations (N=0,1,2), only one group of fragmented dipole excited states has been reproduced at 5.5 MeV in comparison to the experimental distribution which shows a second group at about 5 MeV. The computed dipole transition strengths are mainly of E1 character which could be associated to the pygmy dipole resonance.

Published
2015

32. Direct determination of ground-state transition widths and natural level widths with the method of relative self absorption

Author

International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Romig, Christopher, Beck, Tobias, Beller, Jacob, Birkhan, Jonny, Endres, Anne, Fritzsche, Matthias, Gayer, Udo, Glorius, Jan, Isaak, Johann, Mertes, Laura, Pai, Haridas, Pietralla, Norbert, Ries, Philipp, Savran, Deniz, Scheck, Marcus, Schnorrenberger, Linda, Sonnabend, Kerstin, Werner, Volker, Zweidinger, Markus, International Symposium on Capture Gamma-Ray Spectroscopy and Related Topics (15. : 2014 : Dresden), Romig, Christopher, Beck, Tobias, Beller, Jacob, Birkhan, Jonny, Endres, Anne, Fritzsche, Matthias, Gayer, Udo, Glorius, Jan, Isaak, Johann, Mertes, Laura, Pai, Haridas, Pietralla, Norbert, Ries, Philipp, Savran, Deniz, Scheck, Marcus, Schnorrenberger, Linda, Sonnabend, Kerstin, Werner, Volker, and Zweidinger, Markus

Abstract

The method of relative self absorption is based on the technique of nuclear resonance fluorescence measurements. It allows for a model-independent determination of ground-state transition widths, natural level widths, and, consequently, of branching ratios to the ground state for individual excitations. Relative self–absorption experiments have been performed on the nuclei 6Li and 140Ce. In order to investigate the total level width for the 0+1, T = 1 level at 3563 keV in 6Li, a high-precision self-absorption measurement has been performed. In the case of 140Ce, self absorption has been applied for the first time to study decay widths of dipole-excited states in the energy regime of the pygmy dipole resonance.

Published
2015

34. Decay pattern of the pygmy dipole resonance in 130Te

Author

International Nuclear Physics Conference (25. : 2013 : Firenze, Italy), Isaak, Johann, Beller, Jacob, Fiori, Enrico, Krtička, Milan, Löher, Bastian, Pietralla, Norbert, Romig, Christopher, Rusev, Gencho, Savran, Deniz, Scheck, Marcus, Silva, Joel, Sonnabend, Kerstin, Tonchev, Anton P., Tornow, Werner, Weller, Henry R., Zweidinger, Markus, International Nuclear Physics Conference (25. : 2013 : Firenze, Italy), Isaak, Johann, Beller, Jacob, Fiori, Enrico, Krtička, Milan, Löher, Bastian, Pietralla, Norbert, Romig, Christopher, Rusev, Gencho, Savran, Deniz, Scheck, Marcus, Silva, Joel, Sonnabend, Kerstin, Tonchev, Anton P., Tornow, Werner, Weller, Henry R., and Zweidinger, Markus

Abstract

The electric dipole strength distribution in 130Te has been investigated using the method of Nuclear Resonance Fluorescence. The experiments were performed at the Darmstadt High Intensity Photon Setup using bremsstrahlung as photon source and at the High Intensity -Ray Source, where quasi-monochromatic and polarized photon beams are provided. Average decay properties of 130Te below the neutron separation energy are determined. Comparing the experimental data to the predictions of the statistical model indicate, that nuclear structure effects play an important role even at sufficiently high excitation energies. Preliminary results will be presented.

Published
2014

35. Experimental results on the Pygmy Dipole Resonance

Author

International Nuclear Physics Conference (25. : 2013 : Firenze, Italy), Savran, Deniz, International Nuclear Physics Conference (25. : 2013 : Firenze, Italy), and Savran, Deniz

Abstract

The so-called Pygmy Dipole Resonance, an additional structure of low-lying electric dipole strength, has attracted strong interest in the last years. Different experimental approaches have been used in the last decade in order to investigate this new interesting nuclear excitation mode. In this contribution an overview on the available experimental data is given.

Published
2014

36. Exclusive measurements of nuclear breakup reactions of 17Ne

Author

INPC 2013 – International Nuclear Physics Conference, Wamers, Felix, Marganiec, Justyna, Aksouh, Farouk, Aksyutina, Yuliya, Álvarez-Pol, Héctor, Aumann, Thomas, Beceiro-Novo, Saul, Bertulani, Carlos A., Boretzky, Konstanze, Garcia Borge, Maria José, Chartier, Marielle, Chatillon, Audrey, Chulkov, Leonid V., Cortina Gil, Dolores, Egorova, Irina A., Emling, Hans, Ershova, Olga, Forssén, Christian, Fraile Prieto, Luis Mario, Fynbo, Hans Otto Uldall, Galaviz Redondo, Daniel, Geissel, Hans, Grigorenko, Leonid V., Heil, Michael, Hoffmann, Dieter H. H., Hoffmann, Jan, Johansson, Håkan T., Jonson, Björn, Karagiannis, Christos, Karakoç, Mesut, Kiselev, Oleg A., Kratz, Jens-Volker, Kulessa, Reinhard, Kurz, Nikolaus, Langer, Christoph, Lantz, Mattias, Larsson, Kristian, Le Bleis, Tudi, Lemmon, Roy Crawford, Litvinov, Yuri A., Mahata, Kripamay, Müntz, Christian, Nilsson, Thomas, Nociforo, Chiara, Nyman, Göran Hugo, Ott, Wolfgang, Panin, Valerii, Parfenova, Yulia L., Paschalis, Stefanos, Perea Martinez, Angel, Plag, Ralf, Reifarth, René, Richter, Achim, Rodriguez-Tajes, Carme, Rossi, Dominic M., Riisager, Karsten, Savran, Deniz, Schrieder, Gerhard, Shulgina, Natalia B., Simon, Haik, Stroth, Joachim, Sümmerer, Klaus, Taylor, Jonathan Thomas, Tengblad, Olof, Tengborn, Elisabeth, Weick, Helmut, Wimmer, Christine, Zhukov, Mikhail V., INPC 2013 – International Nuclear Physics Conference, Wamers, Felix, Marganiec, Justyna, Aksouh, Farouk, Aksyutina, Yuliya, Álvarez-Pol, Héctor, Aumann, Thomas, Beceiro-Novo, Saul, Bertulani, Carlos A., Boretzky, Konstanze, Garcia Borge, Maria José, Chartier, Marielle, Chatillon, Audrey, Chulkov, Leonid V., Cortina Gil, Dolores, Egorova, Irina A., Emling, Hans, Ershova, Olga, Forssén, Christian, Fraile Prieto, Luis Mario, Fynbo, Hans Otto Uldall, Galaviz Redondo, Daniel, Geissel, Hans, Grigorenko, Leonid V., Heil, Michael, Hoffmann, Dieter H. H., Hoffmann, Jan, Johansson, Håkan T., Jonson, Björn, Karagiannis, Christos, Karakoç, Mesut, Kiselev, Oleg A., Kratz, Jens-Volker, Kulessa, Reinhard, Kurz, Nikolaus, Langer, Christoph, Lantz, Mattias, Larsson, Kristian, Le Bleis, Tudi, Lemmon, Roy Crawford, Litvinov, Yuri A., Mahata, Kripamay, Müntz, Christian, Nilsson, Thomas, Nociforo, Chiara, Nyman, Göran Hugo, Ott, Wolfgang, Panin, Valerii, Parfenova, Yulia L., Paschalis, Stefanos, Perea Martinez, Angel, Plag, Ralf, Reifarth, René, Richter, Achim, Rodriguez-Tajes, Carme, Rossi, Dominic M., Riisager, Karsten, Savran, Deniz, Schrieder, Gerhard, Shulgina, Natalia B., Simon, Haik, Stroth, Joachim, Sümmerer, Klaus, Taylor, Jonathan Thomas, Tengblad, Olof, Tengborn, Elisabeth, Weick, Helmut, Wimmer, Christine, and Zhukov, Mikhail V.

Abstract

We have studied one-proton-removal reactions of about 500MeV/u 17Ne beams on a carbon target at the R3B/LAND setup at GSI by detecting beam-like 15O-p and determining their relative-energy distribution. We exclusively selected the removal of a 17Ne halo proton, and the Glauber-model analysis of the 16F momentum distribution resulted in an s2 contribution in the 17Ne ground state of about 40%.

Published
2014

37. Study of photon strength functions via (γ→, γ', γ'') reactions at the γ3-setup.

Author

Isaak, Johann, Savran, Deniz, Beck, Tobias, Gayer, Udo, Krishichayan, Löher, Bastian, Pietralla, Norbert, Scheck, Marcus, Tornow, Werner, Werner, Volker, and Zilges, Andreas

Subjects
PHOTONS, NUCLEOSYNTHESIS, HEAVY nuclei, SPECTRUM analysis, PHASE transitions
Abstract

One of the basic ingredients for the modelling of the nucleosynthesis of heavy elements are so-called photon strength functions and the assumption of the Brink-Axel hypothesis. This hypothesis has been studied for many years by numerous experiments using different and complementary reactions. The present manuscript aims to introduce a model-independent approach to study photon strength functions via γ-γ coincidence spectroscopy of photoexcited states in 128Te. The experimental results provide evidence that the photon strength function extracted from photoabsorption cross sections is not in an overall agreement with the one determined from direct transitions to low-lying excited states. [ABSTRACT FROM AUTHOR]

Published
2018
Full Text
View/download PDF

40. Pile-up recovery in gamma-ray detection

Author

Vencelj, Matjaž, primary, Likar, Andrej, additional, Löher, Bastian, additional, Miklavec, Mojca, additional, Novak, Roman, additional, Pietralla, Norbert, additional, and Savran, Deniz, additional

Published
2012
Full Text
View/download PDF

41. Pile-up recovery in gamma-ray detection.

Author

Vencelj, Matjazˇ, Likar, Andrej, Löher, Bastian, Miklavec, Mojca, Novak, Roman, Pietralla, Norbert, and Savran, Deniz

Subjects
GAMMA ray spectrometry, GAMMA ray detectors, SOLID-state lasers, PHOTONS, BANDPASS filters, ELECTRIC potential, TEMPERATURE effect
Abstract

Count rates in gamma-ray detectors are fundamentally limited at the high end by the physics of the detection process but should not be limited further by the design of read-out. Using intense stimuli, such as the ELI, it is desirable to extract the full wealth of information flow that sensors can deliver. We discuss the photon-statistical limitations of scintillation systems and charge-collection issues of solid-state detectors. With high-speed digitizing in particular, two promising approach architectures are those of posterior list mode corrections and of time-domain adaptive filters, introducing a "rich list mode with uncertainties" and thus a somewhat different look at experimental spectra. Real-time performance is also considered. [ABSTRACT FROM AUTHOR]

Published
2012
Full Text
View/download PDF

42. Coulomb dissociation of $^{16}O$ into $^{4}He$ and $^{12}C$

Author

Göbel, Kathrin, Heil, Michael, Bott, Lukas, Brandenburg, Leonard, Caesar, Christoph, Deuter, Isabell, Grein, Alexander, Keliç-Heil, Aleksandra, Körper, Daniel, Löher, Bastian, Reifarth, René, Savran, Deniz, Schulte, Hendrik, Simon, Haik, Törnqvist, Hans, Almusidi, Tahani, Álvarez-Pol, Héctor, Atkins, Liam, Aumann, Thomas, Bemmerer, Daniel, Benlliure, José, Boretzky, Konstanze, Brückner, Benjamin, Eiras, Pablo Cabanelas, Casarejos, Enrique, Cederkall, Joakim, Chulkov, Leonid, Cortina-Gil, Dolores, Danilov, Rey, Erbacher, Philipp, Rodriguez, Sonia Escribano, Fülöp, Zsolt, Falduto, Ashton, Fiebiger, Stefan, Gašparić, Igor, Borge, Maria José Garcia, Gernhäuser, Roman, Glorius, Jan, Caamaño, David Gonzales, Hartig, Anna-Lena, Heftrich, Tanja, Heggen, Henning, Heine, Marcel, Heinz, Reas, Hensel, Thomas, Holl, Matthias, Johansson, Håkan T., Jonson, Björn, Kalantar-Nayestanaki, Nasser, Kamenyero, Armel, Khasawneh, Kafa, Kiselev, Oleg, Klenze, Philipp, Kohls, Marvin, Kröll, Thorsten, Kresan, Dmytro, Kurtulgil, Deniz, Kurz, Nikolaus, Langer, Christoph, Lehr, Christopher, Litvinov, Yuri, Lorenz, Enis, Morales, Silvia Murillo, Nacher, Enrique, Nilsson, Thomas, Park, Joochun, Paschalis, Stefanos, Perea, Angel, Petri, Marina, Plag, Ralf, Ponnath, Lukas, Popocovski, Romana, Reich, Markus, Rhee, Han-Bum, Sanchez, Jose Luis Rodriguez, Rossi, Dominic, Scheit, Heiko, Schmidt, Konrad, Slavkovská, Zuzana, Starostin, Viktor, Storck, Sonja, Sürder, Christian, Tanaka, Junki, Tengblad, Olof, Thomas, Benedikt, Typel, Stefan, Varga, László, Volk, Klaus, Volknandt, Meiko, Wagner, Vadim, Wamers, Felix, Weigand, Mario, and Zanetti, Lorenzo

Subjects
7. Clean energy
Abstract

Nuclear Physics in Astrophysics IX (NPA-IX), 15-20 September 2019, Frankfurt, Germany, NPA-IX, Frankfurt, Germany, 15 Sep 2019 - 20 Sep 2019; Journal of physics / Conference series 1668, 012016 (2020). doi:10.1088/1742-6596/1668/1/012016, Published by IOP Publ., Bristol

Catalog

Books, media, physical & digital resources
See catalog results