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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 2979-2983 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: In an electron cyclotron resonance ion source the energy of the electrons is increased by the electric field of the microwaves. The gyrofrequency of the electrons has to be in resonance with this field. The production of highly charged ions requires very energetic electrons. As a consequence, the acceleration of electrons by the microwaves has to be efficient. In this article the energy gain of the electrons due to the microwaves has been studied. The gradient of the magnetic field and the frequency of the microwaves were the main variables. The simulations show that more efficient heating is achieved with higher microwave frequency and with smaller gradient of the magnetic field. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 69 (1998), S. 785-787 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The metal ions from the volatile compounds (MIVOC) method was developed at the Accelerator Laboratory, University of Jyväskylä, in order to produce metal ion beams with the source material at or near room temperature conditions. It has been used with the JYFL-ECR ion source since 1993 and has turned out to be both simple and reliable. The method was adopted at several laboratories. Up to the present time, at least 17 MIVOC beams were produced (C, Mg, Si, Cl, Ti, V, Cr, Fe, Co, Ni, Ge, Mo, Ru, Sn, I, W, and Os). With the MIVOC technique it was found possible to operate the JYFL-ECR ion source with compounds of metals, either powders or liquids, that have a room temperature vapor pressure of the order of 1E–3 mbar or higher. The MIVOC method has turned out to be very economical in use since a typical material consumption rate is about 0.3 mg/h. This corresponds to the consumption rate of gases. Due to the simplicity of the system the duty-off time of the ion source is minimized. In this article, the basis of the MIVOC method, phenomena related to it and some results will be presented. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 68 (1997), S. 2707-2710 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new gas feeding system for an electron cyclotron resonance ion source was developed at the University of Jyväskylä. With the aid of the system, pressures of a few hundred millibars in gas lines remain constant within less than 1 mbar. Due to a very stable gas flow in the buffer and ion gas lines, the source can now deliver practically constant current beams of highly charged ions for long period runs. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 534-536 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The old JYFL 6.4 GHz electron cyclotron resonance ion source (ECRIS) at the University of Jyväskylä, Department of Physics (JYFL), is in the process of being upgraded. The calculations have shown that the magnetic field configuration of the SC–ECRIS at the NSCL/MSU can be closely achieved using present coils, power supplies, plasma chamber, and permanent magnets. The hexapole magnetic field will be upgraded later using an iron cylinder around the plasma chamber. Calculations have shown that the improvement of around 30% can be obtained to the strength of the hexapole field. A new AECR–U-type ion source was completed in spring 2000 for the program of the nuclear physics in the laboratory. The MIVOC method and the internal oven for the production of several metal ion beams with the new source have been tested. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Nuclear Inst. and Methods in Physics Research, B 94 (1994), S. 291-296 
    ISSN: 0168-583X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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