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  • 1
    Electronic Resource
    Electronic Resource
    Spectroscopic investigation of oxide states responsible for hot-carrier degradation (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 168-169 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Hole-trap states in the gate oxide of a Si metal-oxide-semiconductor field-effect transistor (MOSFET) are investigated by inhomogeneous excimer laser irradiation. Subbandgap ultraviolet light photons with an energy exceeding a threshold lying between 5.5 and 6.4 eV were found to excite electrons from these originally neutral states into the SiO2 conduction band. A fixed positive charge is left behind. The degradation in MOSFET performance due to the irradiation is comparable to that accompanying hot-hole injection. Also, subsequent hot-electron stress changes the device characteristics in a way similar to hot-electron stress following hot-hole stress. It is concluded that the traps responsible for hot-carrier degradation cause the optically induced charge trapping.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.101218
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  • 2
    Electronic Resource
    Electronic Resource
    A simple technique for determining the interface-trap distribution of submicron metal-oxide-semiconductor transistors by the charge pumping method (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 65 (1989), S. 1358-1360 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The charge pumping method has been modified to simplify the experimental procedure and data evaluation. The width of a pulse section at midgap voltage was varied to scan the interface-state distribution within the band gap. A straight-forward analysis yields simple evaluation of interface-state distribution. The results obtained from a conventional and a submicron lightly doped drain metal-oxide-semiconductor transistor are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.343034
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  • 3
    Electronic Resource
    Electronic Resource
    Identification of the cAMP-Specific Phosphorylation Site of the Purified Skeletal Muscle Receptor for Calcium-Channel Blockers (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 560 (1989), S. 0 
    Details
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1749-6632.1989.tb24119.x
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  • 4
    Electronic Resource
    Electronic Resource
    The Alfvén wave spectrum as measured on a tokamak (1986)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 29 (1986), S. 2260-2272 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The detailed experimental data obtained on the TCA tokamak [Proceedings of the 11th Symposium on Fusion Technology (CEC, Luxembourg, 1981), Vol. I, p. 601] concerning the antenna loading and wave fields as a function of the Alfvén wave spectrum are presented. The plasma density, plasma current, working gas, toroidal magnetic field, and frequency were varied systematically and the detailed results are compiled and discussed. In addition the phasing of the antenna currents was varied systematically, thereby exciting different combinations of modes, including pure traveling waves. The conclusions relevant to the design of an antenna system have been stressed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.865563
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  • 5
    Electronic Resource
    Electronic Resource
    Caoutchouc Substances (1915)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 7 (1915), S. 83-83 
    Details
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ie50073a639
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  • 6
    Electronic Resource
    Electronic Resource
    The charge pumping method: Experiment and complete simulation (1989)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 66 (1989), S. 3092-3096 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We calculate the charge pumping current of a metal-oxide-semiconductor transistor in the time domain utilizing a transient two-dimensional device simulation. The dynamics of the interface states are included in the solution of the time-dependent problem with full self-consistency. The calculated charge pumping curve is in good agreement with the experiment, especially the rise and fall patterns of the signal, which are very sensitive to the source/drain profiles in small devices. The extraction of the density of states shows the range of validity of the analytical models and their restrictions. The influence of hot-carrier stress on the charge pumping signal, which relates to inhomogeneous spatial distribution of interface states and fixed oxide charges, is also discussed in experiment and simulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344166
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  • 7
    Electronic Resource
    Electronic Resource
    Photodissociation spectroscopy and dynamics of negative ion clusters. II. CO3−⋅(H2O)1,2,3 (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 2884-2895 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Energy resolved photodissociation studies of CO3−⋅(H2O)n, n=1,2,3 are reported for photon energies ranging from 1.95 to 2.2 eV. The only dissociation channel observed is the loss of all attached water molecules to give unclustered CO3− as the sole photofragment ion. The cross section for this mechanism is substantially higher than that for the bare ion, and the sharp structure observed in the spectrum of the bare ion is nearly lost in the clusters. Analysis of the kinetic energy distributions for the photofragment ions places an upper limit of 20 μs on the lifetime of the excited clusters, and demonstrates that approximately 95% of the excess energy in the cluster remains in the CO3− containing fragment rather than being partitioned into relative translation of the photofragments or into internal motion of the water fragments. The dissociation mechanism begins with a bound–bound 2A1←2B1 transition within the core CO3− ion. Internal conversion returns the core ion to the electronic ground state with substantial vibrational excitation; redistribution of this vibrational energy results in vibrational predissociation of the cluster. The relations of this mechanism to those that occur in the bare ion and to other vibrational predissociation experiments on clusters are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448236
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  • 8
    Electronic Resource
    Electronic Resource
    Photodissociation dynamics of CO3− (1985)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 82 (1985), S. 134-150 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: The dynamics of CO3− photodissociation is studied with a new photodissociation spectrometer that allows kinetic energy-resolved detection of parent ions and photofragments. Kinetic energy release distributions, photodissociation spectra, and the dependence of the photofragment intensity on the laser power and background pressure are presented. Photodissociation of CO3− in the energy range 1.95–2.2 eV leads to CO2+O− fragments, and is found to occur by two distinct mechanisms. These mechanisms involve three electronic states that correlate with CO2+O−—the 2B1 ground state, a 2A1 weakly bound state, and a repulsive 2B2 state. The first mechanism begins with a low cross section 2A1 ← 2B1 transition that gives structure to the spectra. From this intermediate state, a second photon carries the ion to the 2B2 state. Dissociation to the observed photofragments occurs rapidly on the repulsive surface. In this two photon mechanism, at least 20% of the available energy is disposed of in relative translation of photofragments. The second mechanism is also initiated by the 2A1 ← 2B1 transition. Deexcitation of the 2A1 bound state by internal conversion, however, leads to high lying vibrational levels of the ground 2B1 state. These vibrational levels are found to have an enhanced collision-induced dissociation cross section.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.448786
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  • 9
    Electronic Resource
    Electronic Resource
    Experimental and computational study of the low-density plasma in the outer regions of a theta pinch (1974)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 25 (1974), S. 667-672 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract The time evolution of the electron density has been measured in the outer regions of a fast theta pinch by means of a Mach-Zehnder interferometer. The results show that the electron density outside the central plasma column is relatively high, i.e. between 1 and 5×1014 cm−3. A comparison of these measurements with theoretical calculations leads to the conclusion that the pinch must be unstable during the implosion phase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01596130
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  • 10
    Electronic Resource
    Electronic Resource
    Laser scattering measurements on a deuterium plasma in the rotating magnetic field pinch (1974)
    Springer
    Zeitschrift für angewandte Mathematik und Physik 25 (1974), S. 717-725 
    Details
    ISSN: 1420-9039
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Description / Table of Contents: Zusammenfassung Elektronentemperatur und Elektronendichte wurden im ”Rotating magnetic field pinch”—Experiment mit Hilfe von Laser-Licht Streuung gemessen. Die Resultate werden mit früheren Messungen und mit numerischen Berechnungen verglichen. Für die numerischen Berechnungen wurde ein magnetohydrodynamisches Dreiflüssigkeitsmodell verwendet. Der Vergleich zwischen Theorie und Experiment zeigt, dass die Wände des Entladungsrohres eine Plasmaquelle darstellen, die etwa 0.6*1015 Elektronen und ebensoviele Ionen pro cm2 pro μs erzeugt.
    Notes: Summary Electron temperature and density were measured in the rotating magnetic field pinch by means of laser light scattering. The results are compared with previous measurements and with numerical calculations based on a three-fluid magnetohydrodynamic model. The comparison between theory and experiment shows that the interior surface of the discharge tube acts as a plasma source producing approximately 0.6*1015 electron-ion pairs per cm2 per μs.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01590257
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