Browsing by Author "Kienle, P."

Now showing items 1-20 of 23

    • Article  

      Acceptance and resolution simulation studies for the dielectron spectrometer HADES at GSI 

      Schicker, R.; Brenschede, A.; Garrow, K.; Schön, H.; Bałanda, A.; Bokemeyer, H.; Friese, J.; Karig, W.; Kienle, P.; Koenig, W.; Kühn, W.; Lefèvre, F.; Metag, V.; Roche, G.; Salabura, P.; Schröter, A.; Stroth, J.; Tsertos, Haralambos (1996)
      Design studies for a second generation dilepton spectrometer to be built at the SIS accelerator of GSI Darmstadt are presented. The basic design parameters of this system are specified and the different detector components ...
    • Article  

      Dielectron production in C12+C12 collisions at 2AGeV with the HADES spectrometer 

      Krücken, R.; Agakichiev, G.; Agodi, C.; Alvarez-Poll, H.; Bałanda, A.; Bertini, D.; Bielčík, Jaroslav; Bellia, G.; Böhmer, M.; Bokemeyer, H.; Boyard, J. L.; Braun-Munzinger, P.; Cabanelas, Pablo; Chernenko, S.; Christ, T.; Coniglione, R.; Cosentino, L.; Diáz, J.; Dohrmann, F.; Durán, I.; Eberl, T.; Enghardt, W.; Fabbietti, L.; Fateev, O.; Fernandez, C.; Finocchiaro, P.; Friese, J.; Fröhlich, I.; Fuentes, B.; Garabatos, Chilo; Garzón, J. A.; Gernhäuser, R.; Gilardi, C.; Golubeva, M.; González-Díaz, D.; Grosse, E.; Guber, F.; Hennino, T.; Hlavac, S.; Holzmann, R.; Homolka, J.; Ierusalimov, A.; Iori, I.; Ivashkin, A.; Jaskuła, M.; Jurkovic, M.; Kagarlis, M.; Kajetanowicz, M.; Kämpfer, B.; Kanaki, K.; Karavicheva, T.; Kastenmüller, A.; Kidoń, L.; Kienle, P.; Koenig, I.; Koenig, W.; Körner, H. J.; Kolb, B. W.; Kotte, R.; Kugler, A.; Kühn, W.; Kulessa, R.; Kurepin, A.; Lang, S.; Lange, S.; Lehnert, J.; Lins, E.; Magestro, D.; Maiolino, C.; Malarz, A.; Markert, J.; Metag, V.; Mousa, J.; Münch, M.; Müntz, C.; Naumann, L.; Nekhaev, A.; Novotny, J.; Otwinowski, J.; Pachmayer, Y. C.; Pechenov, V.; Pérez, T.; Piattelli, P.; Pietraszko, J.; Pleskac, R.; Płoskoń, M.; Pospísil, V.; Prokopowicz, W.; Przygoda, W.; Ramstein, B.; Reshetin, A.; Ritman, J.; Roy-Stephan, M.; Rustamov, A.; Sadovsky, A.; Sailer, B.; Salabura, P.; Sánchez, M.; Sapienza, P.; Schmah, A.; Schön, H.; Schön, W.; Schröder, C.; Schwab, E.; Simon, R. S.; Smolyankin, V.; Smykov, L.; Spataro, S.; Spruck, B.; Ströbele, H.; Stroth, J.; Sturm, C.; Sudoł, M.; Suk, M.; Taranenko, A.; Tlusty, P.; Toia, A.; Traxler, M.; Tsertos, Haralambos; Vassiliev, D.; Vázquez, A.; Wagner, V.; Waluś, W.; Wiśniowski, M.; Wójcik, T.; Wüstenfeld, J.; Zanevsky, Y.; Zeitelhack, K.; Zovinec, D.; Zumbruch, P. (2007)
      The invariant-mass spectrum of e+e- pairs produced in C12+C12 collisions at an incident energy of 2 GeV per nucleon has been measured for the first time. The measured pair production probabilities span over 5 orders of ...
    • Conference Object  

      Dilepton production in ion-ion collisions studied using HADES 

      Krücken, R.; Kugler, A.; Agakichiev, H.; Agodi, C.; Alvarez-Poll, H.; Bałanda, A.; Bellia, G.; Bertini, D.; Bielčík, Jaroslav; Böhmer, M.; Bokemeyer, H.; Boyard, J. L.; Braun-Munzinger, P.; Cabanelas, Pablo; Chernenko, S.; Christ, T.; Coniglione, R.; Cosentino, L.; Diáz, J.; Dohrmann, F.; Duran, I.; Eberl, T.; Enghardt, W.; Fabbietti, L.; Fateev, O.; Fernandez, C.; Finocchiaro, P.; Friese, J.; Fröhlich, I.; Fuentes, B.; Garabatos, Chilo; Garzon, J. A.; Gernhäuser, R.; Gilardi, C.; Golubeva, M.; Gonzales-Diaz, D.; Grosse, E.; Guber, F.; Hennino, Th; Hlavac, S.; Holzmann, R.; Homolka, J.; Ierusalimov, A.; Iori, I.; Ivashkin, A.; Jaskula, M.; Jurkovic, M.; Kagarlis, M.; Kajetanowicz, M.; Kämpfer, B.; Kanaki, K.; Karavicheva, T.; Kastenmüller, A.; Kidon, L.; Kienle, P.; Koenig, I.; Koenig, W.; Körner, H. -J; Kolb, B. W.; Kotte, R.; Krizek, F.; Kühn, W.; Kulessa, R.; Kurepin, A.; Lang, S.; Lange, S.; Lehnert, J.; Lins, E.; Magestro, D.; Maiolino, C.; Malarz, A.; Markert, J.; Metag, V.; Mousa, J.; Münch, M.; Müntz, C.; Naumann, L.; Nekhaev, A.; Novotny, R.; Otwinowski, J.; Pachmayer, Y. C.; Pechenov, V.; Perez, T.; Piattelli, P.; Pietraszko, J.; Pleskac, R.; Ploskon, M.; Pospisil, V.; Prokopowicz, W.; Przygoda, W.; Ramstein, B.; Reshetin, A.; Ritman, J.; Roy-Stephan, M.; Rustamov, A.; Sadovski, A.; Sailer, B.; Salabura, P.; Sanchez, M.; Sapienza, P.; Schmah, A.; Schön, H.; Schroeder, C.; Schwab, E.; Simon, R.; Smoliankin, V.; Smykov, L.; Spataro, S.; Spruck, B.; Ströbele, H.; Stroth, J.; Sturm, C.; Sudol, M.; Taranenko, A.; Tlusty, P.; Toia, A.; Traxler, M.; Tsertos, Haralambos; Turzo, I.; Vassiliev, D.; Vazquez, A.; Wagner, V.; Walus, W.; Wiśniowski, M.; Wojcik, T.; Wüstenfeld, J.; Zanevsky, Yu; Zeitelhack, K.; Zovinec, D.; Zumbruch, P. (2007)
      The High-Acceptance Di-Electron Spectrometer installed at GSI Darmstadt is a second generation experiment to study production of dielectron pairs from proton, pion and nucleus induced reactions at the SIS/BEVALAC energy ...
    • Article  

      Experimental exclusion of neutral resonances in Bhabha scattering at MeV energies 

      Tsertos, Haralambos; Kienle, P.; Judge, S. M.; Schreckenbach, K. (1991)
      Using an active-shadow technique and a monoenergetic e+ beam at the high-flux reactor of ILL, we pursued the search for long-lived (> 5 × 10-13 s) neutral resonances that could be formed in e+e- scattering around an invariant ...
    • Article  

      Experiments on e+e--line emission in HI collisions 

      Bär, R.; Bałanda, A.; Baumann, J.; Berg, W.; Bethge, K.; Bokemeyer, H.; Folger, H.; Fröhlich, O.; Ganz, R.; Hartung, O.; Samek, M.; Salabura, P.; Schön, W.; Schwalm, D.; Stiebing, K.; Thee, P.; Berdermann, E.; Heine, F.; Heinz, S.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Leinberger, U.; Schröter, A.; Tsertos, Haralambos (1995)
      We summarize the current status of e+e--coincidence experiments performed by the EPOS and ORANGE collaborations at GSI. © 1995.
    • Article  

      First energy and angle differential measurements of e+e--pairs emitted by internal pair conversion of excited heavy nuclei 

      Leinberger, U.; Berdermann, E.; Heine, F.; Heinz, S.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Schröter, A.; Tsertos, Haralambos; Hofmann, C.; Soff, G. (1998)
      We present the first energy and angle resolved measurements of e+e--pairs emitted from heavy nuclei (Ζ ≥ 40) at rest by internal pair conversion (IPC) of transitions with energies of less than 2 MeV as well as recent ...
    • Article  

      The high-acceptance dielectron spectrometer HADES 

      Hutsch, J.; Krücken, R.; Agakichiev, G.; Agodi, C.; Alvarez-Poll, H.; Atkin, E.; Badura, Eugen; Bałanda, A.; Bassi, A.; Bassini, R.; Bellia, G.; Belver, D.; Belyaev, A. V.; Benovic, M.; Bertini, D.; Bielčík, Jaroslav; Böhmer, M.; Boiano, C.; Bokemeyer, H.; Bartolotti, A.; Boyard, J. L.; Brambilla, S.; Braun-Munzinger, P.; Cabanelas, Pablo; Castro, E.; Chepurnov, V.; Chernenko, S.; Christ, T.; Coniglione, R.; Cosentino, L.; Dahlinger, M.; Daues, H. W.; Destefanis, M.; Diáz, J.; Dohrmann, F.; Dressler, R.; Durán, I.; Dybczak, A.; Eberl, T.; Enghardt, W.; Fabbietti, L.; Fateev, O. V.; Fernández, C.; Finocchiaro, P.; Friese, J.; Fröhlich, I.; Fuentes, B.; Galatyuk, T.; Garabatos, Chilo; Garzón, J. A.; Genolini, B.; Gernhäuser, R.; Gilardi, C.; Gilg, H.; Golubeva, M.; González-Díaz, D.; Grosse, E.; Guber, F.; Hehner, J.; Heidel, K.; Heinz, T.; Hennino, T.; Hlavac, S.; Hoffmann, J.; Holzmann, R.; Homolka, J.; Ierusalimov, A. P.; Iori, I.; Ivashkin, A.; Jaskula, M.; Jourdain, J. C.; Jurkovic, M.; Kämpfer, B.; Kajetanowicz, M.; Kanaki, K.; Karavicheva, T.; Kastenmüller, A.; Kidon, L.; Kienle, P.; Kirschner, D.; Koenig, I.; Koenig, W.; Körner, H. J.; Kolb, B. W.; Kopf, U.; Korcyl, K.; Kotte, R.; Kozuch, A.; Krizek, F.; Kühn, W.; Kugler, A.; Kulessa, R.; Kurepin, A.; Kurtukian-Nieto, T.; Lang, S.; Lange, J. S.; Lapidus, K.; Lehnert, J.; Leinberger, U.; Lichtblau, C.; Lins, E.; Lippmann, C.; Lorenz, M.; Magestro, D.; Maier, L.; Maier-Komor, P.; Maiolino, C.; Malarz, A.; Marek, T.; Markert, J.; Metag, V.; Michalska, B.; Michel, J.; Migneco, E.; Mishra, D.; Morinière, E.; Mousa, J.; Münch, M.; Müntz, C.; Naumann, L.; Nekhaev, A.; Niebur, W.; Novotny, J.; Novotny, R.; Ott, W.; Otwinowski, J.; Pachmayer, Y. C.; Palka, M.; Parpottas, Yiannis; Pechenov, V.; Pechenova, O.; Cavalcanti, T. P.; Petri, M.; Piattelli, P.; Pietraszko, J.; Pleskac, R.; Ploskon, M.; Pospísil, V.; Pouthas, J.; Prokopowicz, W.; Przygoda, W.; Ramstein, B.; Reshetin, A.; Ritman, J.; Roche, G.; Rodriguez-Prieto, G.; Rosenkranz, K.; Rosier, P.; Roy-Stephan, M.; Rustamov, A.; Sabin-Fernandez, J.; Sadovsky, A.; Sailer, B.; Salabura, P.; Salz, C.; Sánchez, M.; Sapienza, P.; Schäfer, D.; Schicker, R. M.; Schmah, A.; Schön, H.; Schön, W.; Schroeder, C.; Schroeder, S.; Schwab, E.; Senger, P.; Shileev, K.; Simon, R. S.; Skoda, M.; Smolyankin, V.; Smykov, L.; Sobiella, M.; Sobolev, Y. G.; Spataro, S.; Spruck, B.; Stelzer, H.; Ströbele, H.; Stroth, J.; Sturm, C.; Sudoł, M.; Suk, M.; Szczybura, M.; Taranenko, A.; Tarantola, A.; Teilab, K.; Tiflov, V.; Tikhonov, A.; Tlusty, P.; Toia, A.; Traxler, M.; Trebacz, R.; Troyan, A. Y.; Tsertos, Haralambos; Turzo, I.; Ulrich, A.; Vassiliev, D.; Vázquez, A.; Volkov, Y.; Wagner, V.; Wallner, C.; Walus, W.; Wang, Y.; Weber, M.; Wieser, J.; Winkler, S.; Wisniowski, M.; Wojcik, T.; Wüstenfeld, J.; Yurevich, S.; Zanevsky, Y. V.; Zeitelhack, K.; Zentek, A.; Zhou, P.; Zovinec, D.; Zumbruch, P. (2009)
      HADES is a versatile magnetic spectrometer aimed at studying dielectron production in pion, proton and heavy-ion-induced collisions. Its main features include a ring imaging gas Cherenkov detector for electron-hadron ...
    • Article  

      High-sensitivity measurements of the excitation function for Bhabha scattering at MeV energies 

      Tsertos, Haralambos; Kozhuharov, C.; Armbruster, P.; Kienle, P.; Krusche, B.; Schreckenbach, K. (1989)
      Using a monochromatic e+ beam scattered on a Be foil and a high-resolution detector device, the excitation function for elastic e+e- scattering was measured with a statistical accuracy of 0.25% in 1.4-keV steps in the ...
    • Article  

      Investigations of correlated ρ+ e- emission in heavy-ion collisions near the Coulomb barrier 

      Koenig, I.; Berdermann, E.; Bosch, F.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Schröter, A.; Tsertos, Haralambos (1993)
      We present the results obtained from a series of ρ+ρ--coincidence measurements in heavy-ion collisions using the double-Orange β-spectrometer at GSI. The collision systems U+U, U+Pb, and U+Ta were investigated at bombarding ...
    • Article  

      Monoenergetic (e+e-) pairs from heavy ion collisions 

      Berdemann, E.; Bosch, F.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Tsertos, Haralambos; Schuhbeck, S.; Huchler, S.; Kemmer, J.; Schröter, A. (1988)
      Energy and angular correlations of (e+e-) pairs emitted in HI collisions were investigated. Some evidence is found for a weak peak at 815±5keV in the (e+e-) sum-energy spectrum obtained for θe+c- = 180° ± 18° (FWHM). The ...
    • Article  

      Multiple positron structures observed from U-U collisions at 5.6 MeV/u and 5.9 MeV/u 

      Tsertos, Haralambos; Bosch, F.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Berdermann, E.; Huchler, S.; Wagner, W. (1987)
      High resolution positron spectroscopy in U-U collisions at bombarding energies of 5.6 MeV/u, the lowest energy studied until now as well as of 5.9 MeV/u, reveals similar multiple structures between 220 keV and 385 keV ...
    • Article  

      Narrow positron lines from U-U and U-Th collisions 

      Clemente, M.; Berdermann, E.; Kienle, P.; Tsertos, Haralambos; Wagner, W.; Kozhuharov, C.; Bosch, F.; Koenig, W. (1984)
      Spectra of positrons emitted in heavy-ion-atom collisions close to the Coulomb barrier were measured. The data exhibit broad energy distributions according to expectations for induced positron creation by the strong ...
    • Article  

      New limits for resonant Bhabha scattering around the invariant mass of 1.8 MeV/c2 

      Tsertos, Haralambos; Kozhuharov, C.; Armbruster, P.; Kienle, P.; Krusche, B.; Schreckenbach, K. (1988)
      The excitation function for Bhabha scattering was reinvestigated in the energy range between 775 and 840 keV (c.m.) in 1.4 keV steps using a monoenergetic e+ -beam and a high-resolution kinematic coincidence detector device. ...
    • Article  

      New results on e+e--line emission in U+Ta collisions ORANGE collaboration at GSI 

      Leinberger, U.; Berdermann, E.; Heine, F.; Heinz, S.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Rhein, M.; Schröter, A.; Tsertos, Haralambos (1997)
      We present new results obtained from a series of follow-up e+e--coincidence measurements in heavy-ion collisions, utilizing an improved experimental set-up at the double-Orange β-spectrometer of GSI. The collision system ...
    • Article  

      On the momentum correlation of (e+e-) pairs observed in U + U and U + Pb collisions 

      Koenig, W.; Berdermann, E.; Bosch, F.; Huchler, S.; Kienle, P.; Kozhuharov, C.; Schröter, A.; Schuhbeck, S.; Tsertos, Haralambos (1989)
      First results on the energy and angular dependence of the (e+e-) pairs, emitted from U + U and U + Pb collisions at a beam energy of 5.9 MeV/u, are presented. The (e+e-) coincidence measurements were carried out utilizing ...
    • Article  

      On the production mechanism of the narrow positron lines observed in heavy-ion collisions 

      Tsertos, Haralambos; Bosch, F.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Berdermann, E.; Clemente, M.; Wagner, W. (1987)
      Following a suggestion of Bang et al. we deduce that the total energy transfer associated with the narrow positron lines observed in heavy-ion collisions is given approximately by the sum of the rest masses of the positron ...
    • Article  

      On the scattering-angle dependence of the monochromatic positron emission from U + U and U + Th collisions 

      Tsertos, Haralambos; Berdermann, E.; Bosch, F.; Clemente, M.; Kienle, P.; Koenig, W.; Kozhuharov, C.; Wagner, W. (1985)
      The narrow positron lines emitted in U + Th and U + U collisions were investigated with respect to their dependence on the heavy-ion scattering angle Θp. For U + U collisions also the excitation function was measured which ...
    • Article  

      Positron lines from subcritical heavy ion-atom collisions 

      Koenig, W.; Bosch, F.; Kienle, P.; Kozhuharov, C.; Tsertos, Haralambos; Berdermann, E.; Huchler, S.; Wagner, W. (1987)
      Positron lines were observed in heavy ion-atom collisions at bombarding energies close to the Coulomb barrier in subcritical systems with the sum of the atomic numbers of the colliding nuclei Zu=Z1+Z2 being smaller than ...
    • Article  

      Positron spectra from internal pair conversion observed in 238U + 181Ta collisions 

      Heinz, S.; Berdermann, E.; Heine, F.; Joeres, O.; Kienle, P.; Koenig, I.; Koenig, W.; Kozhuharov, C.; Leinberger, U.; Rhein, M.; Schröter, A.; Tsertos, Haralambos (2000)
      We present new results from measurements and simulations of positron spectra, originating from 238U + 181Ta collisions at beam energies close to the Coulomb barrier. The measurements were performed using an improved ...
    • Article  

      Search for long-lived neutral resonances in Bhabha scattering around 1.8 MeV/c2 

      Judge, S. M.; Krusche, B.; Schreckenbach, K.; Tsertos, Haralambos; Kienle, P. (1990)
      A search has been carried out for long-lived neutral particles which could be created in resonant e+e- scattering, with an invariant mass around 1.8 MeV/c2. A monoenergetic positron beam was scattered from a thin Be foil, ...