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  • 1
    Electronic Resource
    Electronic Resource
    The ECR ion source DECRIS : Proceedings of fifth international conference on ion sources (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 1084-1086 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The design of the electron cyclotron resonance (ECR) multicharged ion source DECRIS (Dubna ECR ion source, 14 GHz) was started at the Flerov Laboratory of Nuclear Reactions at the beginning of 1990 and in January 1992 the first plasma was ignited. A classical magnetic configuration based on the MINIMAFIOS with some "features'' served as the basis for the source design. The DECRIS was installed on the ECR test bench. The first study of the source was carried out in continuous mode of operation at strict control of hexapole temperature. The ion source has been tested with He, N, O, and Ar ions. The results of these initial measurements are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1145070
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  • 2
    Electronic Resource
    Electronic Resource
    Status report on electron cyclotron resonance ion source operation at the Flerov Laboratory of Nuclear Reactions (Joint Institute for Nuclear Research) cyclotrons : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 774-776 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Two electron cyclotron resonance (ECR) sources, DECRIS-14-2 and ECR4M, are presently in permanent operation at the Flerov Laboratory of Nuclear Reactions cyclotrons, U400M and U400, respectively. A wide range of ions of gases from He up to Xe was delivered by the sources and accelerated in the cyclotrons. Major efforts were made in the production of high current stable ion beams of solids with relatively low melting points in mass ranges from Li up to Bi. Both the evaporator and the MIVOC technique were used. Among the solids a beam as exotic as 48Ca was produced at the U400 cyclotron with high efficiency. The main results on production of ion beams of gases and solids are reported. For further development of ECR ion sources a test bench was designed and built. The test bench is equipped with the new DECRIS-3 ion source. The parameters of the test bench and ECR source are described. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150290
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  • 3
    Electronic Resource
    Electronic Resource
    Production of intense 48Ca ion beam at the U-400 cyclotron : The 8th international conference on ion sources (2000)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 71 (2000), S. 860-862 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Production of the intense accelerated 48Ca ion beam is the key problem in the experiments on synthesizing of new heavy nuclei. For this purpose an axial injection system with the electron cyclotron resonance (ECR)-4M ion source was created for the U400 cyclotron. The task was to achieve an accelerated beam with an intensity of 0.5 pμA of 48Ca5+ at the 48Ca consumption of ∼0.5 mg/h. To solve this problem, a new method for the solid material feed into the ECR source was developed. The combination of a micro oven with a hot tantalum sheet inside the discharge chamber allowed the production of intense beams of ions of metals with relatively low melting point. The present article describes the method, technique, and experimental results on the production of 48Ca ion beam at the U-400 cyclotron from the ECR-4M ion source. The analysis of the working substance balance in the ion source including the ion beam extraction and material regeneration is performed. The analysis based on the experimental data has shown that the efficiency of Ca atom transformation into ion beam is close to that obtained for the gases such as Ar, and the intensity of 48Ca5+ constitutes about 20% of the extracted ion beam. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1150313
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  • 4
    Electronic Resource
    Electronic Resource
    Design aspects and status of construction of the mVINIS ion source : Proceedings of the 7th international conference on ion sources (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 679-681 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The mVINIS ion source is a multiply charged heavy ion source based on the electron cyclotron resonance effect. This machine is a part of the Tesla Accelerator Installation, an ion accelerator facility whose construction has been going on at the VINCA Institute of Nuclear Sciences in Belgrade, Yugoslavia. mVINIS is an advanced version of the Dubna electron cyclotron resonance ion source 14-2, constructed at the Joint Institute for Nuclear Research (JINR) in Dubna, Russia. It is a complete injector, consisting of an ECR ion source, focusing and steering elements, an analyzing magnet, a vacuum system, and an ion beam diagnostic system. The main parts of mVINIS have been designed and manufactured at JINR, while the vacuum equipment, power supplies, ion beam diagnostics, and control system were purchased elsewhere. The preliminary testing (magnetic field measurements, vacuum testing, testing of the ECR ion source) has been performed at JINR, and the final assembly of the mVINIS and measurement of the ion beam parameters have been going on at the VINCA Institute. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148568
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  • 5
    Electronic Resource
    Electronic Resource
    Performance of the ion source DECRIS-14-2 : Proceedings of the 7th international conference on ion sources (1998)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 662-664 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The Dubna electron cyclotron resonance ion source DECRIS-14-2 was put into regular operation at the U-400M cyclotron in the beginning of 1995. During the past two years the source has produced a wide range of ion beams for physics experiments as well as for the testing of the beam transport lines and the cyclotron itself. Ions of gases, such as He, N, O, Ne, and Ar were successfully delivered and accelerated in the cyclotron. The ion source has shown good performance especially in the case of middle charge state ions (e.g., 600 eμA of Ar8+) as well as high operational reliability. Significant progress in metal ion production has been achieved by introducing a new microoven for the evaporation of metal samples. This microoven in combination with an additional tantalum sheet installed inside the discharge chamber has made it possible to obtain Li2+ ion beams in excess of 200 eμA. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1148567
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  • 6
    Electronic Resource
    Electronic Resource
    Dubna electron cyclotron resonance ion source (DECRIS)-14-2: Results of the first operation : Proceedings of the 6th international conference on ion sources (1996)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 67 (1996), S. 980-982 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The new electron cyclotron resonance (ECR) ion source, the Dubna electron cyclotron resonance ion source (DECRIS)-14-2, was designed and built for use with the isochronous cyclotron U-400M. The source assembly was completely finished by the end of 1994 and in January of 1995 the source was tested on the ECR-test bench. In February the source was installed in the cyclotron and in April the first physical experiment on the accelerated beam was carried out. Here we present some design aspects of this source and the results of the first operation on the cyclotron. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1146788
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  • 7
    Electronic Resource
    Electronic Resource
    The efficiency of consuming rare isotopes in a PIG ion source : International conference on ion sources (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 487-489 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The efficiency of consuming a working substance in the cyclotron arc ion source during operation at the LNR JINR cyclotrons is analyzed in comparison with the results obtained for the ECR ion source of GANIL and the Berkeley cyclotrons. The experimental results described have been obtained during the acceleration of rare isotopes ion beams (Mg-Ge) at the U-400 and U-300 cyclotrons. Some features of solid working substances fed into the cyclotron ion source are described. The optimal conditions for the efficient use of working substances in the arc discharge are discussed. The results of producing and accelerating rare gas isotopes ion beams, including the radioactive isotope carbon-14, are presented. Prospects for the future development of efficient ion sources for the LNR cyclotron complex consisting of the U-400 and the U-400M are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141230
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  • 8
    Electronic Resource
    Electronic Resource
    Study of correlation of production and decay planes in π → 3π diffractive dissociation process on nuclei (2000)
    Springer
    Physics of atomic nuclei 63 (2000), S. 445-447 
    Details
    ISSN: 1063-7788
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A large correlation of production and decay planes of the π−π+π− system in dissociation of a 40-GeV/c π− beam on nuclear targets was observed. The dependence of the correlation on atomic number, Feynman variable, and transversal momentum, as well as on invariant mass of the pion triple and neutral pion pair, was investigated. It was shown that the phenomenon has a clear dynamical origin and resembles the single-spin asymmetry behavior.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.855652
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  • 9
    Electronic Resource
    Electronic Resource
    High-power HF laser pumped by an electron-beam-initiated chemical nonchain reaction (1997)
    Springer
    Technical physics letters 23 (1997), S. 193-195 
    Details
    ISSN: 1090-6533
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The development of a high-power HF laser pumped by a chemical nonchain reaction initiated by a radially converging electron beam is reported. A radiation energy of ∼ 115 J with an efficiency of ∼ 8% in terms of deposited energy has been achieved in a mixture with an active volume of ∼ 30 liters. It is shown that because of the high SF6 density, the total pressure jump in SF6–H2(D2) mixtures caused by the electron beam injection and the chemical reactions is several times smaller than that in the active mixtures of exciplex lasers for the same input energies. This factor considerably facilitates the development of wide-aperture HF and DF lasers with an SF6 fluorine donor pumped by an electron-beam-initiated chemical nonchain reaction.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1134/1.1261592
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  • 10
    Electronic Resource
    Electronic Resource
    Correlations of two protons in relativisticdp-collisions (1991)
    Springer
    The European physical journal 338 (1991), S. 247-252 
    Details
    ISSN: 1434-601X
    Keywords: 12.35.Ht ; 25.45.De ; 17.35.Cs
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Two-proton correlations in thedp→ppn collisions of relativistic deuterons with protons are considered. These correlations give more information than inclusive proton spectra described in the framework of different deuteron structure function models because of uncertainty in the calculation of secondary interaction contribution (rescattering processes and final state interactions). We present the predictable calculations which show different behaviour of the correlation function for different deuteron structure function models in the kinematic region where contributions of secondary interactions are negligible.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01288186
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