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  • 1
    Electronic Resource
    Electronic Resource
    Enhancement of macrophage colony-stimulating factor in mice by carbon particle (1982)
    Springer
    Cellular and molecular life sciences 38 (1982), S. 1231-1232 
    Details
    ISSN: 1420-9071
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Carbon particles enhance hemopoiesis in irradiated mice. Serum from carbon-treated mice stimulated macrophage colony formation, and inhibited granulocyte colony formation. The finding suggests that carbon-treatment modulates the hemopoietic environment through the monocyte-macrophage system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01959758
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  • 2
    Electronic Resource
    Electronic Resource
    Frequency dependence of magnetization in thick film heads for VCR : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 5998-6000 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetization in a VCR thick film magnetic head with 10-μm-thick poles was measured by a scanning Kerr effect microscope (SKEM) and calculated by a three-dimensional finite element method (FEM) including a time dependent term. The SKEM measurements were achieved at the rubbing surface of the heads and it was observed that the vertical magnetization component to the surface has peaks at both side edges of the poles and the peak height ratio to height at the pole center becomes larger as the driving frequency increases. These measurement results were in good agreement with the FEM calculations. The comparison with the measurements and the calculations for a ferrite head shows that the magnetization peaks are attributed to both the eddy currents and the geometrical effects.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353499
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  • 3
    Electronic Resource
    Electronic Resource
    Edge plasma density reconstruction for fast monoenergetic lithium beam probing (1993)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 64 (1993), S. 1699-1704 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Two different electron density reconstruction methods for 8-keV neutral lithium beam probing have been developed for the Compact Helical System (CHS). Density dependences on emission and ionization processes are included by using effective rate coefficients obtained from the collisional radiative model. Since the two methods differ in the way the local beam density in the plasma is determined, the methods have different applicable electron densities. The beam attenuation is calculated by iteration from the electron density profile in method I. In method II, the beam remainder at the observation point z is determined by integrating the Li i emission intensity from z toward the position of emission tail-off. At the emission tail-off, the fast lithium beam is completely attenuated. Selecting an appropriate method enables us to obtain edge electron density profile well inside the last closed flux surface for various ranges of plasma densities (1012–5×1013 cm−3). The electron density profiles reconstructed by these two different methods are in good agreement with each other and are consistent with results from ruby laser Thomson scattering.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143996
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  • 4
    Electronic Resource
    Electronic Resource
    Active control of beam trajectories for heavy ion beam probe on helical magnetic configurations (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 3694-3700 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Active control of beam trajectories using four sets of sweep plates is proposed for a heavy ion beam probe (HIBP) system on helical plasma, such as torsatron, stellarator, etc., in order to solve problems arising from the complicated beam trajectories in its nonaxisymmetrical magnetic field. By this method, a series of the probing beam trajectories giving a whole potential distribution can be managed to pass at a particular point (detector aperture) with the same angle. An equation is introduced as a guiding principle to simplify the optimization process of geometrical configuration of the HIBP system, which will be adjusted for different magnetic configurations by only changing the sweep plate voltages.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1143600
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  • 5
    Electronic Resource
    Electronic Resource
    Extraction characteristics of Na and Na2 negative ions from a small multicusp ion source : Proceedings of the fourth International Conference on Ion Sources (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2447-2449 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Negative sodium ions and negative dimer ions of sodium are extracted from a sodium plasma. The extraction characteristics of Na− and Na2− from a low power discharge (about 1 W) through a single aperture (φ1.5 mm) are described. Both extracted currents of Na− and Na2− increase with the temperature of the heat shield inside the discharge chamber. The current ratio of Na− to Na2− is almost constant independent of discharge voltage. By increasing the discharge power, the value of the bias voltage of the plasma electrode that gives the optimum extraction currents of Na− and Na2− increases. The extracted current of Na2− is lower than that of Na− by two orders of magnitude.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142906
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  • 6
    Electronic Resource
    Electronic Resource
    A compact neutron counter telescope with thick radiator (COTETRA) for fusion experiments (1994)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 1636-1643 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new type of neutron spectrometer, which is called COTETRA (counter telescope with thick radiator), has been developed for diagnosing DT fusion plasma. It is based on the recoil proton measurement and has such advantages as: (1) direct measurement of the neutron energy without the unfolding procedure, (2) sufficiently fine energy resolution and high detection efficiency for 14 MeV neutrons, (3) wide dynamic range of counting rate, and (4) good n–γ discrimination. A prototype of COTETRA was constructed and tested using a DT neutron accelerator. The energy resolution of 5.3%±0.9% was obtained for 14 MeV neutron with the detection efficiency of 1.3×10−4 [counts/(n/cm2)]. A Monte Carlo simulation code was developed and the performances of COTETRA were examined. The calculation agrees with the results of the experiment within its margin of error and suggests that energy resolution up to 3% with a detection efficiency of 10−5 [counts/(n/cm2)] could be achieved if the condition of the radiator could be successfully adjusted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1144852
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  • 7
    Electronic Resource
    Electronic Resource
    Development of negative heavy ion sources for plasma potential measurement : Proceedings of the fourth International Conference on Ion Sources (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 2726-2728 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A plasma sputter negative ion source was evaluated for its applicability for measuring the plasma potentials in fusion devices. Both the beam current density and the beam energy spread are key issues for this application. The energy spectra of self-extracted Au− beams from the source were measured under the condition of a constant work function of the production surface. The FWHM increases from 3 to 9 eV monotonically as the target voltage increases from 50 to 300 V, independently from the target surface work function of 2.2–3 eV.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142836
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  • 8
    Electronic Resource
    Electronic Resource
    A new method for measuring phase shift in heterodyne interferometric measurement (1990)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 61 (1990), S. 1442-1447 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new method for analyzing the phase shift of probe beat in heterodyne interferometric measurement has been developed. The phase shift is obtained directly from the changes of the probe beat period without comparing with a reference beat. An electric circuit system has been designed according to this method of measurement, combined with a heterodyne interferometer of HCN laser or 4 mm microwave of line-integrated electron density of plasma in the compact helical system (CHS). The experimental results show that the method is effective. It simplifies the interferometric system and is free from the trouble of initial phase difference between the probe beat and reference. The minimum measurable phase shift is determined by the ratio of beat frequency to the counting clock frequency. The maximum measurable phase shift is infinite in principle.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1141149
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  • 9
    Electronic Resource
    Electronic Resource
    Fabrication of Josephson junctions using heteroepitaxial Bi2(Sr,Ca)3Cu2Ox/Bi2Sr2CuOy/Bi2(Sr,Ca)3Cu2Ox trilayer films (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 62 (1993), S. 1685-1687 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We have fabricated Josephson junctions from c-axis oriented heteroepitaxial Bi2(Sr,Ca)3Cu2Ox/Bi2Sr2CuOy/Bi2(Sr,Ca)3Cu2Ox trilayer films. The junctions showed resistively shunted junctionlike characteristics up to 30 K. Several junctions showed hysteresis at low temperatures. The highest value of the product of the critical current and the normal state resistance of the junctions was about 0.2 mV. Clear Shapiro steps at the expected voltages were observed in the presence of external microwave irradiation. The height of these steps oscillated to full suppression as a function of the microwave source power. Moreover the periodic magnetic field dependence of the critical current was clearly observed. These results indicated a good uniformity in the Josephson current distribution in these junctions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.109576
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  • 10
    Electronic Resource
    Electronic Resource
    In-plane anisotropic transport properties observed in epitaxial Bi2(Sr,Ca)3Cu2Ox films grown on tilted (001)SrTiO3 substrate (1991)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 59 (1991), S. 2445-2447 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report on large in-plane anisotropic transport properties observed in epitaxial Bi2(Sr,Ca)3Cu2Ox films grown on tilted (001)SrTiO3 substrate. By tilting the surface normal axis about 4° toward [111]SrTiO3, regular steps and terraces were formed on the substrate surface and perfect alignment of film b axis with incommensurate modulation along [110]SrTiO3 was realized. The film c axis was perpendicular to the (001)SrTiO3 terrace, thus the film c axis grew tilted 4° toward [111] from surface normal due to the surface inclination. In those epitaxial configurations, the in-plane resistivity along the step direction(ρ[110]) involved the contribution from the c-axis(ρc) component, and we observed the large resistivity anisotropy between a- and b- direction of the film. The transport along a axis(ρa) showed a low resistivity with metallic temperature dependence while the resistivity along the step direction(ρ[110]) was higher and semiconductive. The ratio of ρc/ρa ≈ 104 estimated in this experiment agrees well with the anisotropy observed in the bulk single crystal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.105990
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