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Przejdź do strony domowej biblioteki Pedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaPedagogiczna Biblioteka Wojewódzka im. Komisji Edukacji Narodowej w Lublinie
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    Wyświetlanie 1-8 z 8
    Tytuł:
    Emergence of complex patterns in a higher-dimensional phyllotactic system
    Autorzy:
    Beyer, R.
    Richter-Gebert, J.
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Powiązania:
    https://bibliotekanauki.pl/articles/59178.pdf  Link otwiera się w nowym oknie
    Opis:
    A hypothesis commonly known as Hofmeister’s rule states that primordia appearing at the apical ring of a plant shoot in periodic time steps are formed in the position where the most space is available with respect to the space occupation of already-formed primordia. A corresponding two-dimensional dynamical model has been extensively studied by Douady and Couder, and shown to generate a variety of observable phyllotactic patterns indeed. In this study, motivated by mathematical interest in a theoretical phyllotaxis-inspired system rather than by a concrete biological problem, we generalize this model to three dimensions and present the dynamics observed in simulations, thereby illustrating the range of complex structures that phyllotactic mechanisms can give rise to. The patterns feature unexpected additional properties compared to the two-dimensional case, such as periodicity and chaotic behavior of the divergence angle.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Electron- and proton-impact excitation of He-like uranium
    Autorzy:
    Fritzsche, S.
    Voitkiv, A.
    Surzhykov, A.
    Beyer, H.
    Märtin, R.
    Yin, Z.
    Kozhuharov, C.
    Weber, G.
    Warczak, Andrzej
    Winters, D. F. A.
    Winters, N.
    Spillmann, U.
    Najjari, B.
    Schuch, R.
    Geyer, S.
    Chen, W.
    Hegewald, M.
    Indelicato, P.
    Grisenti, R.
    Thorn, D. B.
    Gumberidze, A.
    Currell, F.
    Hagmann, S.
    Trotsenko, S.
    Zhang, H. L.
    Wen, W.
    Petridis, N.
    Fontes, C. J.
    Banaś, D.
    Stöhlker, Th.
    DuBois, R. D.
    Opis:
    In this contribution, we present an experimental and theoretical study of the proton- and electron- impact excitation effects in helium-like uranium ions in relativistic collisions with different gaseous targets. The experiment was carried out at the experimental storage ring at GSI Darmstadt. Our experimental results are in agreement with predictions of the state-of-the art theory which treats both processes within the relativistic framework.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Two-photon energy distribution from the decay of the 2 ^{1}S_{0} state in He-like uranium
    Autorzy:
    Beyer, H. F.
    Stöhlker, Th.
    Sierpowski, D.
    Stachura, Z.
    Fritzsche, S.
    Mokler, P. H.
    Banaś, D.
    Ma, X.
    Trotsenko, S.
    Volotka, A. V.
    Tashenov, S.
    Hagmann, S.
    Spillmann, U.
    Bosch, F.
    Kumar, A.
    Mann, R.
    Warczak, Andrzej
    Gumberidze, A.
    Bräuning-Demian, A.
    Kozhuharov, C.
    Surzhykov, A.
    Opis:
    We have performed a measurement of the spectral shape from the two-photon decay of the 1s2s^{1}S_{0} state in He-like uranium. The two-photon emission followed the ionization of initially Li-like uranium ions in collisions with a N_{2} gas-jet target. The measured shape of the two-photon energy distribution shows good agreement with results of the relativistic calculations that take into account the electron-electron interaction rigorously up to the first order in quantum electrodynamic perturbation expansion. From the full width at half maximum of the measured two-photon energy distribution, we confirm the theoretically predicted modification of the shape due to the relativistic effects.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Enhanced radiative recombination of U^{92+} ions with cooling electrons for the K-shell
    Autorzy:
    Reuschl, R.
    Böhm, S.
    Beyer, H. F.
    Brandau, C.
    Stöhlker, Th.
    Liesen, D.
    Sierpowski, D.
    Mokler, P. H.
    Pajek, M.
    Banaś, D.
    Trotsenko, S.
    Dousse, J.-Cl.
    Czarnota, M.
    Tashenov, S.
    Hagmann, S.
    Chatterjee, S.
    Spillmann, U.
    Schmidt, E. W.
    Bosch, F.
    Kumar, A.
    Verma, P.
    Warczak, Andrzej
    Gumberidze, A.
    Kozhuharov, C.
    Szlachetko, J.
    Surzhykov, A.
    Müller, A.
    Opis:
    Observed enhancement of K-shell radiative recombination (RR) of bare uranium ions with cooling electrons is interpreted in terms of of distant transverse collisions in magnetized electron-cooler plasma described within the semiclassical geometrical model (SGM), which was recently proposed. The Monte Carlo simulations based on the proposed approach explains the enhancement measured in RR of U^{92+} ions with cooling electrons for the K-shell.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Inne
    Tytuł:
    Performance of the prototype Silicon Tracking System of the CBM experiment tested with heavy-ion beams at SIS18
    Autorzy:
    Löchner, S.
    Gil, Damian
    Al-Turany, M.
    Lubynets, O.
    Kłeczek, R.
    Kyva, V.
    Kedych, V.
    Schiaua, C.
    Kisel, I.
    Elizarov, I.
    Luo, X.
    Pietraszko, J.
    Vasylyev, O.
    Panasenko, I.
    Jipa, A.
    Feng, S.
    Lorenz, M.
    Reiter, S.P.
    Gutiérrez Menéndez, D.
    Berendes, R.
    Nickels, F.
    Ristea, O.
    Teklishyn, M.
    Senger, P.
    Herrmann, N.
    Marin Garcia, A.M.
    Traxler, M.
    Sun, K.
    Zhou, W.
    Visinka, R.
    Schünemann, K.
    Nabroth, M.
    Maragoto Rodríguez, O.
    Bercuci, A.
    Kliemt, R.
    Goldenbaum, F.
    Semeniuk, P.
    de Cuveland, J.
    Selyuzhenkov, I.
    Deshmukh, A.A.
    Csanád, M.
    Keshelashvili, I.
    Keller, O.
    Petriş, M.
    Momot, I.
    Becker, M.
    Dubla, A.
    Zabołotny, W.
    Kiš, M.
    Sambyal, S.S.
    Höhne, C.
    Bâsceanu, V.A.
    Płaneta, Roman
    Sahu, S.K.
    Pugatch, V.
    Arnoldi-Meadows, B.
    Okropiridze, D.
    Zhu, X.
    Müller, W.F.J.
    Galatyuk, T.
    Mehta, S.
    Taylor, J.
    Plujko, V.
    Rodríguez Garces, D.
    Becker, J.
    Zbroszczyk, H.P.
    Gupta, A.
    Feier-Riesen, C.
    Puntke, A.
    Mallick, B.
    Pugach, M.
    Heine, N.
    Ghosh, S.K.
    Frühauf, J.
    Rustamov, A.
    Povar, T.
    Cherif, H.
    Azmi, M.D.
    Sefzick, T.
    Kozlov, G.
    Ritman, J.
    Schmidt, C.J.
    Gope, S.
    Weidenkaff, P.
    Nandy, E.
    Munkes, P.
    Ramírez Zaldivar, D.A.
    Han, D.
    Deppner, I.
    Bhaduri, P.P.
    Roether, F.
    Schmidt, H.R.
    Rost, A.
    Greve, N.
    Sen, A.
    Lasko, Paweł
    Mao, Y.
    Zischka, G.
    Hofman, O.
    Yin, Z.
    Kohn, M.
    Mithran, A.
    Dürr, M.
    Sahoo, R.
    Michel, J.
    Söhngen, Y.
    Flemming, H.
    Linz, F.J.
    Cãlin, M.
    Staszel, Paweł
    Lalik, Rafał
    Suddia, O.
    Thaufelder, J.
    Wang, K.
    Wintz, P.
    Chaloupka, P.
    Samal, S.
    Sturm, C.
    Yao, M.
    Clerkin, E.
    Matejcek, F.A.
    Xu, H.
    Sharma, A.
    Blank, T.
    Markert, J.
    Zhang, X.
    Toia, A.
    Poźniak, K.
    Ahrens, L.J.
    Bertini, D.
    Bonaventura, D.
    Messchendorp, J.
    Pauly, C.
    Bhat, S.A.
    Chattopadhyay, S.
    Shiroya, M.
    Schledt, D.
    Simons, C.
    Lymanets, A.
    Klein-Bösing, Ch.
    Petrovici, M.
    Zhou, Y.
    Peter, S.
    Kasiński, K.
    Lazanu, I.
    Scharmann, K.
    Frankenfeld, U.
    Lakos, R.
    Vassiliev, I.
    Golinka-Bezshyyko, L.
    Miskowiec, D.
    Prasad, S.K.
    Hoffmann, F.
    Sidorenko, V.
    Taka, E.D.
    Thau, S.N.
    Dvořák, R.
    Unger, K.L.
    Wu, K.
    Andronic, A.
    Zheng, S.
    Wielanek, D.
    Gorbunov, S.
    Shi, S.
    Chakrabarti, A.
    Stockmanns, T.
    Dahm, P.
    Yang, J.
    Majka, Zbigniew
    Peña Rodríguez, J.
    Lavrik, E.
    Santos Marrero, K.
    Jin, Y.
    Das, S.
    Loizeau, P.-A.
    Pfeifer, D.
    Deveaux, M.
    Bertini, O.
    Zumbruch, P.
    Bhattacharyya, A.
    Wyżykowski, A.
    Friese, V.
    Sahu, P.K.
    Biswas, S.
    Janson, T.
    Singh, R.
    Petráček, V.
    Chernyshenko, S.
    Ismail, K.
    Romaniuk, R.
    Koczoń, P.
    Kshyvanskyi, O.
    Radulescu, L.
    Kumar, L.
    Matulewicz, T.
    Li, Y.
    Neuhaus, S.
    Mahajan, S.
    Heuser, J.M.
    Singh, B.K.
    Kruszewski, M.
    Bhasin, A.
    Moreira de Godoy Willems, D.
    Yang, R.
    Smith, D.
    Daribayeva, A.
    Bhowmik, N.K.
    Redelbach, A.
    Koch, K.
    Diehl, J.
    Bajdel, M.
    Appelshäuser, H.
    Bhattacharjee, B.
    Sharma, P.K.
    Ghosh, C.
    Spicker, D.
    Förtsch, J.
    Alam, N.
    Beyer, M.
    Li, S.
    Koziel, M.
    Otfinowski, P.
    Zharko, S.
    Simon, F.
    Wolf, Gy.
    Han, J.
    Singh, O.
    Leung, Y.H.
    Zhou, D.
    Bezshyyko, O.
    Blume, C.
    Stroth, J.
    Gutsche, B.
    Huang, Y.
    Darwish, H.
    Podgornov, N.
    Wahmes, L.
    Wilms, A.
    Faber, L.J.
    Fröhlich, I.
    Soból, Bartosz
    Wieloch, Andrzej
    Deppe, H.
    Trębacz, L.
    Kovalchuk, O.
    Kugler, A.
    Kollarczyk, J.
    Fidorra, F.
    Roy, A.
    Schintke, F.
    Mandal, S.
    Kampert, K.-H.
    Szczygieł, R.
    Gangopadhyay, G.
    Brzychczyk, Janusz
    Holzmann, R.
    Bhat, W.A.
    Li, W.
    Penek, Ö.
    Agarwal, K.
    Rodríguez Rodríguez, A.
    Sun, Y.
    Subramanya, G.S.
    Deară, D.-A.
    Singhal, V.
    Hesounová, H.
    Ahammed, Z.
    Trifonova, E.
    Foka, P.
    Pan, L.
    Liu, F.
    Artur, B.
    Bluhme, N.
    Kapell, R.M.
    Weiglhofer, F.
    Nerling, F.
    Nayak, S.R.
    Fischer, P.
    Andary, J.
    Sun, Z.
    Ahmad, N.
    Agarwal, A.
    Wojtkowski, M.
    Emschermann, D.
    Kumar, A.
    Volkova, E.
    Roy, S.
    Kadenko, I.
    Saini, J.
    Senger, A.
    Tyagi, O.
    Wu, Q.
    Singh, A.K.
    Raha, S.
    Yoo, I.
    Wessels, J.P.
    Meyer-Ahrens, A.
    Piasecki, K.
    Boccarella, G.
    Dubey, A.K.
    Kresan, D.
    Mir, M.F.
    Collazo Sánchez, L.M.
    Bandyopadhyay, A.
    Gläßel, S.
    Opíchal, A.
    Caselle, M.
    Sharma, A.K.
    Kähler, P.
    Zubrzycka, W.
    Balzer, M.
    Das, R.
    Eschke, J.
    Kubiak, B.
    Uhlig, F.
    Bhat, T.A.
    Ray, R.
    Twarowska, A.
    Wang, Y.
    Lindenstruth, V.
    Pluta, J.
    Subramani, P.
    Dobishuk, V.
    Grzonka, D.
    Hutter, D.
    Kim, S.
    Karabowicz, R.
    Krüger, W.
    Müntz, C.
    Mohanty, B.
    Belousov, A.
    Seck, F.-J.
    Khan, M.M.
    Kashyap, V.K.S.
    Salabura, Piotr
    Gasik, P.
    Rubio, E.
    Reinefeld, A.
    Lehnert, J.
    Opis:
    The Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR) is a heavy-ion experiment designed to study nuclear matter at the highest baryonic density. For high-statistics measurements of rare probes, collision rates of up to 10 MHz are targeted. The experiment, therefore, requires fast and radiation-hard detectors, self-triggered detector front-ends, free-streaming readout architecture, and online event reconstruction. The Silicon Tracking System (STS) is the main tracking detector of CBM, designed to reconstruct the trajectories of charged particles with efficiency larger than 95%, a relative momentum uncertainty better than 2% for particle momenta larger than 1 GeV/c inside a 1 Tm magnetic field, and to identify complex decay topologies. It comprises 876 double-sided silicon strip modules arranged in 8 tracking stations. A prototype of this detector, consisting of 12 modules arranged in three tracking stations, is installed in the mini-CBM demonstrator. This experimental setup is a small-scale precursor to the full CBM detector, composed of sub-units of all major CBM systems installed on the SIS18 beamline. In various beam campaigns taken between 2021 and 2024, heavy ion collisions at 1–2 AGeV with an average collision rate of 500 kHz have been recorded. This allows for the evaluation of the operational performance of the STS detector, including signal-to-noise ratio, charge distribution, time and position resolution, hit reconstruction efficiency, and its potential for track and vertex reconstruction.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-8 z 8

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