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Start Over Author "S.Yu. Orlov" Topic 0103 physical sciences
4 results on '"S.Yu. Orlov"'

1. Studies of uranium carbide targets of a high density

Author

M. Dubois, P. L. Molkanov, L. Stroe, S. Essabaa, M. G. Saint Laurent, G. Gaubert, A. M. Ionan, C. Mhamed, O. Alyakrinskiy, K. A. Mezilev, L.B. Tecchio, M. Tonezzer, Yu. M. Volkov, C. Eleon, D. V. Fedorov, P. Jardin, M. Barbui, A. E. Barzakh, F. V. Moroz, V. S. Ivanov, G. Lhersonneau, R. Leroy, V. N. Panteleev, S.Yu. Orlov, C. Lau, Antonio Villari, Laboratori Nazionali di Legnaro (LNL), Istituto Nazionale di Fisica Nucleare (INFN), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), M. Lion, W. Mittig, O. Navilliat-Cuncic, P. Roussel-Chomaz, A.C.C. Villari, and 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)

Subjects
Yield, Nuclear and High Energy Physics, Pellets, Small target, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], Massive target, 01 natural sciences, Preliminary analysis, Ionising target, chemistry.chemical_compound, Delay time, Uranium carbide target, Instrumentation, 0103 physical sciences, Nuclide, 010306 general physics, Isotope, 010308 nuclear & particles physics, Radiochemistry, Ambientale, 25.40.Sc, 28.60.+S, 29.25.Ni, 29.25.Rrn, chemistry, Yield (chemistry), TASK 4 [4], Uranium carbide
Abstract

International audience; Production of Rb, Cs and Fr isotopes from uranium carbide targets of a high density has been investigated. The UC target material with a density of 12 g/cm3 was prepared in a form of pellets of 2 mm thickness, 11 mm in diameter and grain dimensions of about 20 microns. Two targets were tested on-line at the same temperature conditions: a) a reference small target with a thickness of 4.5 g/cm2; b) a big massive target with a thickness of 91 g/cm2. The yields and release efficiencies of the nuclides with the half-lives from some minutes to some milliseconds produced from the investigated targets have been presented. A preliminary analysis of the obtained results has shown an increase of the produced nuclide yields proportionally to the target thickness even for very short-lived isotopes 214Fr (T1/2=5 ms) and 219Fr (T1/2=20 ms). One month off-line heating test of a big target at a temperature of 2000 °C has been conducted. The yields and release of Rb, Cs and Fr measured on-line before and after the heating test coincided in the limits of measurement errors that demonstrated the conservation of the developed target unit parameters. The construction of a big target with the mass about 0.7 kg prepared presently at IRIS has been discussed.

Published
2008
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2. Electron beam - plasma ionizing target for production of neutron-rich nuclides

Author

D. V. Fedorov, Yu. M. Volkov, S. Essabaa, F. V. Moroz, L.B. Tecchio, A. M. Ionan, A. E. Barzakh, V. S. Ivanov, R. Leroy, G. Lhersonneau, Antonio Villari, K. A. Mezilev, P. L. Molkanov, L. Stroe, V. N. Panteleev, S.Yu. Orlov, C. Lau, Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-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), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratori Nazionali di Legnaro (LNL), Istituto Nazionale di Fisica Nucleare (INFN), M. Lion, W. Mittig, O. Navilliat-Cuncic, P. Roussel-Chomaz, A.C.C. Villari, and 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)

Subjects
Nuclear and High Energy Physics, Yield, Materials science, Proton, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], chemistry.chemical_element, 7. Clean energy, 01 natural sciences, Ionising target, chemistry.chemical_compound, Ionization, 0103 physical sciences, Neutron, Nuclide, 010306 general physics, Instrumentation, 010302 applied physics, Isotope, Radiochemistry, Plasma, Uranium carbide target, Uranium, 25.40.Sc, 28.60.+S, 29.25.Ni, 29.25.Rrn, chemistry, TASK 4 [4], Uranium carbide, Ionization efficiency
Abstract

The production of neutron-rich Ag, In and Sn isotopes from a uranium carbide target of a high density has been investigated at the IRIS facility in the PLOG (PNPI-Legnaro-GANIL-Orsay) collaboration. The UC target material with a density of 12 g/cm3 was prepared by the method of powder metallurgy in a form of pellets of 2 mm thickness, 11 mm in diameter and grain dimensions of about 20 μm. The uranium target mass of 31 g was exposed at a 1 GeV proton beam of intensity 0.05–0.07 μA. For the ionization of the produced species the electron beam–plasma ionization inside the target container (ionizing target) has been used. It was the first experiment when the new high density UC target material was exploited with the electron–plasma ionization. Yields of Sn isotopes have been measured in the target temperature range of (1900–2100) °C. The yields of some Pd, In and Cd isotopes were measured as well to compare to previously measured ones from a high density uranium carbide target having a ceramic-like structure. For the first time a nickel isotope was obtained from a high density UC target.

Published
2007
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3. Tests of high-density UC targets developed at Gatchina for neutron-rich radioactive-beam facilities

Author

A. Lanchais, M. G. Saint Laurent, K. A. Mezilev, F. V. Moroz, A. M. Ionan, Yu. M. Volkov, C. Eleon, B. Roussière, V. S. Ivanov, Antonio Villari, V. N. Panteleev, V. Rizzi, G. Lhersonneau, R. Leroy, D. V. Fedorov, A. E. Barzakh, O. Bajeat, G. Gaubert, S.Yu. Orlov, M. Dubois, C. Lau, L. Stroe, P. Jardin, M. Cheikh Mhamed, L.B. Tecchio, S. Essabaa, O. Alyakrinskiy, Laboratori Nazionali di Legnaro (LNL), Istituto Nazionale di Fisica Nucleare (INFN), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), PNPI, Gatchina, National Institute for Physics and Nuclear Engineering (NIPNE), National Institute for Physics and Nuclear Engineering, M. Lion, W. Mittig, O. Navilliat-Cuncic, P. Roussel-Chomaz, A.C.C. Villari, and 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)

Subjects
Physics, Nuclear and High Energy Physics, Isotope, 010308 nuclear & particles physics, Fission, [PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph], Particle sources and targets, High density, chemistry.chemical_element, Uranium, 01 natural sciences, Nuclear physics, chemistry, 0103 physical sciences, 29.25.-t, 29.25.Rm, Neutron, Atomic physics, sources of radioactive nuclei, 010306 general physics, Instrumentation, Radioactive beam
Abstract

International audience; Production of on-line mass separated neutron-rich isotopes using fission induced by 1 GeV protons on high-density uranium targets (typically 11 g/cm3) has been investigated for several years at the IRIS facility. Here we review some of the achievements during the years up to 2006 and the perspectives. In particular, we present a comparison of yields in p and n-induced fission, enhancements by secondary neutrons, a comparison with lower-density targets used at PARRNe and ISOLDE for Rb and Cs isotopes and preliminary results obtained with a new UC target material.

Published
2007
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4. Recent developments and on-line tests of uranium carbide targets for production of nuclides far from stability

Author

O. Bajeat, K. A. Mezilev, M. G. Saint Laurent, P. L. Molkanov, L. Stroe, Alberto Andrighetto, L.B. Tecchio, S.Yu. Orlov, S. Essabaa, A. Lanchais, C. Eleon, Antonio Villari, G. Gaubert, C. Mhamed, A. M. Ionan, R. Leroy, G. Lhersonneau, Marc Dubois, P. Jardin, Yu. M. Volkov, F. V. Moroz, C. Lau, V. S. Ivanov, V. N. Panteleev, O. Alyakrinskiy, V. Rizzi, A. E. Barzakh, Dmitry Fedorov, Laboratori Nazionali di Legnaro (LNL), Istituto Nazionale di Fisica Nucleare (INFN), Grand Accélérateur National d'Ions Lourds (GANIL), Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire d'Orsay (IPNO), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and 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)

Subjects
Materials science, Proton, Isotope separation and enrichment, General Physics and Astronomy, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Nuclear physics, chemistry.chemical_compound, 0103 physical sciences, Low density, General Materials Science, Nuclide, Physical and Theoretical Chemistry, source of radioactive nuclei, 010306 general physics, 25.85.-w, 28.60.+S, 29.25.-t, 29.25.Rm, Line (formation), particle source and targets, 010308 nuclear & particles physics, chemistry, Synchrocyclotron, Fission reactions, TASK 4 [4], Uranium carbide, Beam (structure)
Abstract

International audience; The capacity of uranium carbide target materials of different structure and density for production of neutron-rich and heavy neutron-deficient nuclides have been investigated. The yields of Cs and Fr produced by a 1 GeV proton beam of the PNPI synchrocyclotron and release properties of different targets have been measured. Yields and release efficiencies of Cs and Fr produced from a high density UC target material and from low density UCx prepared by the ISOLDE method at IRIS in the collaboration with PARRNe group from Orsay are compared. The yields from ISOLDE original target are presented for comparison as well.

Published
2007
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