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The 4 pi - fragment - spectrometer FOBOS

Ortlepp, H.-G.; Wagner, W.; Herbach, C.-M.; Aleksandrov, A. A.; Aleksandrova, I. A.; Andrassy, M.; Budzanovski, A.; Czech, B.; Danziger, M.; Dietterle, L.; Doronin, V. N.; Dshemuchadse, S.; Fomichev, A. S.; Fromm, W. D.; Gebhardt, M.; Gippner, P.; Heidel, K.; Heinitz, S.; Homeyer, H.; Ivanovsky, S. I.; Kamanin, D. V.; Kolesov, I. V.; Matthies, A.; May, D.; Merzlyakov, S. I.; von Oertzen, W.; Oganessian, Y. T.; Pausch, G.; Penionzhkevich, Y. E.; Pyatkov, Y. V.; Radnev, S. V.; Renz, G.; Rubinskaya, L. A.; Sandrev, I. D.; Schilling, K.-D.; Seidel, W.; Shishkin, D. I.; Sirotin, A. P.; Sodan, H.; Strekalovsky, O. V.; Tishchenko, V. G.; Trofimov, V. V.; Tsurin, I. P.; Umlauf, C.; Vakatov, D. V.; Vasko, V. M.; Vitenko, V. A.; Will, E.; Wilpert, M.; Yanez, R.; Zhuchko, V. E.; Ziem, P.; Zrodlowski, L.
Abstract
The 4 π - fragment - spectrometer FOBOS developed for heavy-ion research at beam energies of 10 - 100 AMeV has been commissioned for physical experiments at the Flerov Laboratory of Nuclear Reactions of the Joint Institute for Nuclear Research in Dubna. Based on the logarithmic detector principle, it is able to register charged fragments from Protons up to heavy residual nuclei in a large dynamical range. Position-sensitive avalanche counters, axial ionization chambers and CsI(TI) scintillation detectors are arranged in three concentric detector shells. An array of phoswich detectors is used as a more granular forward detector at narrow polar angles. The modular concept of FOBOS allows for different experimental application in the field of exclusive fragment spectroscopy at medium multiplicities. For illustration the fragment spectroscopy studies concerning the spontaneous fission process and the fragmentation of hot nuclei by means of the FOBOS set-up are considered.
  • Nuclear Instruments and Methods in Physics Research A 403 (1998) 65-97
  • Open Access Logo Forschungszentrum Rossendorf; FZR-181
    ISSN: 1436-3976

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Permalink: https://www.hzdr.de/publications/Publ-909
Publ.-Id: 909