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  • Electronic Resource  (102)
  • 1995-1999  (66)
  • 1985-1989  (35)
  • 1970-1974  (1)
  • 11
    Electronic Resource
    Electronic Resource
    Thermal behavior of deep levels correlated with iron in silicon metal-oxide-semiconductor structure (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 2199-2201 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thermal behavior of deep levels correlated with iron in Si MOS (metal-oxide-semiconductor) structure has been studied by isothermal capacitance transient spectroscopy. As a result, it is shown that interstitial iron scarcely affects the interface trap (Nt) of MOS structure. This is made clear by measuring Nt of Si MOS diodes containing iron impurity, the interstitial component of which is controlled by low temperature annealings. In addition, the low temperature (400 °C) annealing decreases interstitial iron concentration as well as interface trap density. This phenomenon is very lucky for Si MOS devices. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359543
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  • 12
    Electronic Resource
    Electronic Resource
    Laser oscillation mechanisms of KrF-laser-pumped iron vapor plasma (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 4948-4953 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In order to study laser oscillation mechanisms of a KrF-laser-pumped iron vapor plasma, the population densities of iron atoms, the temperature, and the electron density in iron vapor plasma have been measured. The iron vapor plasma was produced from an iron plate by irradiation with a pulsed YAG laser (2 J/pulse). The population density of the ground-state iron atoms is about 1014–1015 cm−3, the temperature is about 5000–20 000 K, and the electron density is about 1013–1016 cm−3. When a KrF laser of 34 mJ/pulse irradiates the iron vapor plasma, the absorption cross section of the KrF laser by the iron atom is about 10−16–10−15 cm2. An optical gain has been calculated on the basis of the experimental results, and it is compared with the gain measured experimentally. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359301
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  • 13
    Electronic Resource
    Electronic Resource
    Raman spectroscopic investigation of superconducting YBa2Cu3O7−x, semiconducting YBa2Cu3O6+x, and possible impurity phases (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 242-243 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A Raman spectroscopic investigation of specimens of superconducting YBa2Cu3O7−x and of the possible impurity phases YBa2Cu3O6+x (semiconductor), Y2BaCuO5, Y2Cu2O5, BaCuO2, CuO, Y2O3, and BaCO3 indicates that in the range 100–700 cm−1, there are six characteristic lines belonging to the superconductor. At 13 K, these lines are at 150, 338, 441, 507, 590, and 644 cm−1. Comparison of the Raman spectra of the superconductor and the semiconductor indicates a mode stiffening of the pair at 338 and 441 cm−1, but a mode softening of the pair at 507 and 590 cm−1. A factor group analysis leads to a tentative assignment of the Raman and infrared allowed modes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.99651
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  • 14
    Electronic Resource
    Electronic Resource
    Effects of neutron irradiation on the critical current of bronze processed multifilamentary Nb3Sn superconducting composites (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 4580-4585 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The influence of fast neutron irradiation on critical current Ic and its strain dependence in a bronze processed fine multifilamentary Nb3Sn superconducting composite has been investigated. The neutron irradiation has been performed in a fission reactor at the reactor ambient temperature ((approximately-equal-to)355 K) up to the neutron fluence φt=3.6×1019 n/cm2 (E〉0.1 MeV). The effects of annealing after irradiation have also been investigated. From the measurement of Ic at various magnetic fields, the scaling law for the change in dose has been found to be held in a certain range of neutron dose. The strain sensitivity of Ic under common ratio of applied magnetic field to bulk upper critical field B@B|c2 is affected slightly by irradiation up to φt=1.5×1019 n/cm2 but remarkably by annealing after irradiation to 3.6×1019 n/cm2. The strain scaling law has been found to be the specimen irradiated to 1.5×1019 n/cm2 and also to the one annealed (723 K, 2 h) after 3.6×1019 n/cm2 irradiation. The exponent value for B*c2 in pinning force density vs B@B|c2 relation deviated from unity which is applied for many types of Nb3Sn conductors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340159
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  • 15
    Electronic Resource
    Electronic Resource
    Mechanism of damage formation in antireflection coatings (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 60 (1986), S. 1545-1546 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Theoretical interpretation of damage formation in coated optical glasses is given and its low damage threshold is found to be due to the energy confinement in a narrow gap between the glass substrate and the coated material. The experiments supporting this mechanism are conducted with noncoated, hard-coated, and porous-coated glasses.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.337290
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  • 16
    Electronic Resource
    Electronic Resource
    Dependence of inductively measured critical temperature on frequency and amplitude of applied field in an in situ Nb3Sn superconductor (1986)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 59 (1986), S. 1395-1397 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A superconducting critical temperature Tc has been measured inductively on an in situ-formed Nb3Sn wire. The measurement has been carried out by varying the amplitude and frequency of the applied alternating magnetic field in the range from 0.001 to 100 G and from 0.2 to 100 kHz, respectively. It has been found that the normal to superconducting transition is dependent on the amplitude and slightly dependent on the frequency of the applied field.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.336487
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  • 17
    Electronic Resource
    Electronic Resource
    STUDIES ON SOLUBLE PROTEINS RELEASED FROM THE SYNAPTIC VESICLES OF RAT BRAIN CORTEX (1971)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of neurochemistry 18 (1971), S. 0 
    Details
    ISSN: 1471-4159
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: Abstract— The soluble proteins released from the synaptic vesicles of rat cerebral cortex were studied. One fraction (D4) of these proteins was released in parallel with release of acetylcholine when synaptic vesicles were incubated at 37°C for 10 min in isotonic medium. Another fraction (Dj) was liberated from synaptic vesicles when their membranes were ruptured by mild treatment under hyposmotic conditions and freeze-thawing after release of D1 fraction. Fractions D1 and D2 contained 12 and 9 per cent, respectively, of the total protein in the synaptic vesicles. Some properties of these fractions were investigated by zone electrophoresis and ultracentrifugation, and by measuring their binding capacities for [14C]acetylcholine and various enzyme activities related to acetylcholine metabolism.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1471-4159.1971.tb12001.x
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  • 18
    Electronic Resource
    Electronic Resource
    Photoacoustic detector for synchrotron-radiation research : INTERNATIONAL CONFERENCE ON SYNCHROTRON RADIATION INSTRUMENTATION (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 2318-2320 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: Transient heat generation by absorption of x-ray and far-infrared beams was successfully detected by a photoacoustic detection method. The photoacoustic detectors of solid and gas phase for x rays and of solid materials for far-infrared light are shown together with its instrumentation. The x-ray photoacoustic signal showed a linear dependence on the ring current and ionization chamber current, both of which are the measure of the photon flux. Typical examples of photoacoustic signals were shown, and their characteristics were briefly discussed in relation to the physicochemical properties of the samples. The potential use of this detection method is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140751
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  • 19
    Electronic Resource
    Electronic Resource
    A compact and high repetitive photodiode array detector for the JT-60U Thomson scattering diagnostic : Proceedings of the 12th topical conference on high temperature plasma diagnostics (1999)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 747-750 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A compact and two dimensional detector has been developed for the JT-60U Thomson scattering system, that consists mainly of a proximity focused image intensifier, a 20×12 spatially and spectrally arrayed silicon photodiode, and a data processing unit enabling high repetitive measurement at 1 kHz. To secure a wide spectral bandwidth for an effective detection of the Thomson scattering spectrum, we have introduced a spectrometer and lens systems with enhanced transmission in a longer wavelength, which can compensate for the decreasing characteristic of quantum efficiency of a transmission-mode photocathode used in the image intensifier. The spectral divide of the photodiode array is designed to give its full performance in a wide electron temperature (Te) range of 0.2–15 keV with 12 spectral channels. The application of this newly developed detector to the JT-60U core plasma measurement is also presented. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149435
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  • 20
    Electronic Resource
    Electronic Resource
    Multilaser and high spatially resolved multipoint Thomson scattering system for the JT-60U tokamak : Proceedings of the 12th topical conference on high temperature plasma diagnostics (1999)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 70 (1999), S. 751-754 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The design and operation performance of the latest ruby Thomson scattering system for the JT-60U are described, which includes many novel approaches to attain the repetitive measurement of 60 spatial points with high resolution (8 mm), precision, and reliability especially for a high temperature and large size tokamak device. A beam combiner composed of a polarizer and a Faraday rotator for two ruby lasers has provided the transient measurement with the minimum time interval of 2 ms in burst operation and the multitime-slice measurement with the repetition rate of 0.5 Hz in normal operation. A newly developed photodiode array detector with high repetitive ability of 1 ms has been used for the high temperature core plasma measurement. A quantitative alignment of collection fiber object field has been utilized for the reliable ne profile measurement. By using Rayleigh scattering light, an in situ inferring method for a coated viewing window transmission has been found to have an effect on the precise correction of electron temperature Te and density ne underestimate for high Te plasmas. Making the most use of this diagnostic in a series of the recent JT-60U reversed shear experiments, the formation of an internal transport barrier even for electrons has been revealed from the clear existence of a steep gradient in both Te and ne profile shapes. © 1999 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1149397
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