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  • 1
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 1325-1326 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A high current O+ ion source is desirable for applications to SIMOX and materials modification. To meet the requirements of this field, a new type of nonfilament high current O+ ion source has been developed successfully in our institute. Using O2 as discharge material, the typical extraction characteristics are as follows: The total oxygen ions current is 100 mA, of which the content of O+ is 80%, beam current density is larger than 200 mA/cm2 when the power consumption is 100 W; therefore the economic property is 1 mA/W. Feeding N2, the total extraction beam current is 100 mA of which 70% is N+ while the power consumption is 135 W.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 47 (1991), S. 790-793 
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Inorganica Chimica Acta 183 (1991), S. 157-160 
    ISSN: 0020-1693
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 4
    Publication Date: 2013-08-31
    Description: A transportable lightning simulator was designed, built and tested, which is capable of delivering more than 50 kA to an 8 micro-H test object. The simulator was designed to be a versatile device in the lightning laboratory while meeting the requirements of MIL-STD-1757A for component E current waveforms. The system is capable of operating in either a ringing mode with a Q greater than 5 and a nominal frequency of 160 kHz, or a unipolar mode with no hardware configuration changes. The ringing mode is obtained by the LCR series circuit formed by the pulse generator and test object. The unipolar mode is obtained by closing an electrically triggered crowbar switch at peak current. The simulator exceeds the peak current requirement and rate of rise requirements for MIL-STD-1757A in both the ringing and unipolar modes. The pulse half width in the unipolar mode is in excess of 50 microsec and the action is in excess of 10(exp 5) A(exp 2)s. The design, component values, and test results are presented.
    Keywords: RESEARCH AND SUPPORT FACILITIES (AIR)
    Type: NASA. Kennedy Space Center, The 1991 International Aerospace and Ground Conference on Lightning and Static Electricity, Volume 1; 7 p
    Format: application/pdf
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  • 5
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 67 (1995), S. 780-782 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Spontaneous vitrification was observed in the Au–Ta system, although the atomic size difference between Au and Ta is very small. It was found that among the various compositions studied, vitrification was only achieved at a composition of around Au23Ta77. Comparative data were obtained by ion mixing of Au–Ta multilayered films to support the spontaneous vitrification results. The amorphization mechanism was discussed in terms of competition between the amorphous phase against the nucleation and growth of the existing equilibrium compound, which explained the favorable composition range as well as the thermal stability of the obtained amorphous alloy. © 1995 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
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    In:  Geological Society Special Publication 359: 249-265.
    Publication Date: 2011-12-03
    Description: Taiwan and the Southern Alps of New Zealand are both young transpressive orogens characterized by rapid uplift and exhumation, high heat flow and vigorous surface processes. However, the distribution of heat flow, hot springs and veins in the two orogens is different. Taiwan has higher heat flow, distributed hot springs and localized veining. The Southern Alps has a narrow heat-flow anomaly, localized warm springs and widespread veining. Both orogens have two fluid-flow systems centred about the drainage divide. Shallow topographically driven meteoric water is restricted to the top 2–4 km. Deep flow is dominated by mineralizing rock-exchanged fluids. Extensional deformation occurs in the divide region of both orogens. At depth, vertical stretching produces subhorizontal veins. At shallower levels, stretching is horizontal and veins are steep. Veins in Taiwan are rare with zones of intense veining where flow has been localized into one site during exhumation from metamorphic to near-surface conditions. Fracturing and veining of the initially weak Slate Belt rocks causes a rheological change, increasing the tensile strength and making it more prone to fracturing, thus focusing fluid flow into the same locale. More uniform rheology in the Southern Alps leads to distributed veining.
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  • 7
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 82 (1997), S. 3815-3820 
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Room temperature 200 keV xenon-ion irradiation of multilayers, designed under interfacial free energy concern, did result in the formation of Mo–Cu metallic glasses only within a narrow Mo-enriched composition range. In addition, some Cu-based alloys of metastable fcc solid solutions were also formed at different irradiation stages. To obtain a possible thermodynamic interpretation, a Gibbs-free-energy diagram was calculated based on the semiquantitative Miedema's model and the related methods proposed by Alonso. The free energy of the Mo–Cu multilayers including excess interfacial free energy was also estimated and was compared to that of the amorphous state. It turned out that the interfacial free energy stored in the multilayered films could raise the energy level of the multilayers to a state higher than that of the metastable phases and thus played an important part, in comparison to the energy deposited by irradiation, in inducing alloying in this immiscible system. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 68 (1996), S. 3096-3098 
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Amorphous films of 300 nm thick were obtained by solid state reaction in an immiscible Y–Mo system with a positive heat of mixing being +26 kJ/mol. The experimental results revealed that the Y51Mo49 multilayers, including 19% interfacial atoms, were vitrified by thermal annealing at 300 °C for one and half hours, and that the formed amorphous films recrystallized at about 600 °C. These confirmed that the excess interfacial free energy stored in the multilayered films elevated the initial energetic state of the multilayers to a level higher than that of the amorphous phase, providing a major driving force in solid state amorphization. The elastic modulus and hardness changes of the formed amorphous films upon annealing were characterized by nanoindentation, and the results were in accordance with the proposed free volume model for the amorphous structure. ] © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 9
    Publication Date: 2011-08-11
    Description: Combination scattering of electromagnetic waves from driven space charge waves in magnetoplasma
    Keywords: PHYSICS, PLASMA
    Type: REPT.-30
    Format: text
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  • 10
    Publication Date: 2014-01-16
    Description: Taiwan is considered the archetypical orogen in the development of critical wedge models of mountain building; however, the issue of how arc collision progressed along the margin remains poorly understood. To resolve this, the detrital archive of orogenesis preserved in Coastal Range rocks of eastern Taiwan was used to reconstruct the erosional response of arc collision. The spatial and temporal distribution of exhumation recorded in this detrital record is consistent with southwards progression of arc–continent collision in a punctuated rather than sequential manner with deposition confined to segmented foredeep basins. Apparent increases in sedimentation rates in Taiwan during the Pleistocene may not reflect increased erosion, but instead may be due to the collisional margin architecture. Supplementary materials: Analytical details and dating results are available at www.geolsoc.org.uk/SUP18693 .
    Print ISSN: 0016-7649
    Topics: Geosciences
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