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  • 1985-1989  (10)
  • 1950-1954  (3)
  • 1900-1904  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Absorption spectra from high vibrational levels of He2 (1989)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 91 (1989), S. 7408-7414 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Absorption spectra of dense helium gas at cryogenic temperatures has been acquired while the sample was irradiated using a 6.5 MeV proton beam. By chopping the proton beam, rather than the source lamp, we were able to achieve one part in 104 spectral sensitivity. The spectra showed six new bands in 4He2 and three in 3He2. These have been identified as transitions between high-lying vibrational levels, with the strongest originating on the highest bound level of the a 3Σ+u potential. The temperature and pressure dependence of these features, as compared to low-lying molecular and atomic features, offers some insight into the reaction dynamics of this fundamental system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.457265
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Helium hydride emission spectra at 550 and 640 nm (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 89 (1988), S. 7077-7082 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Emission spectra of three isotopomers of helium hydride (4HeH, 3HeH, and 3HeD) in the visible spectral region have been acquired using proton-beam irradiation of dense helium gas (150 Torr) at 4.2 K in the presence of some solid hydrogen or deuterium. Besides the previously reported D 2Σ+→A 2Σ+ transition, near 550 nm, a second transition near 640 nm, identified as the D 2Σ+→B 2Π, has been acquired and analyzed. The spectroscopic constants for both transitions have been obtained and compared to the theoretical results based on the latest published potential curves. Further insight into the mechanism for forming HeH will be presented, which indicates that the formation process is sensitive to the hydrogen vapor pressure above the solid.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.455337
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    THE RAPID ANALYSIS OF CREAM OF TARTAR AND TARTARIC ACID BAKING-POWDERS. (1904)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 26 (1904), S. 813-818 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01997a011
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Electron acceleration by plasma waves in a nonuniform plasma (1987)
    [S.l.] : American Institute of Physics (AIP)
    Physics of Fluids 30 (1987), S. 3600-3607 
    Details
    ISSN: 1089-7666
    Source: AIP Digital Archive
    Topics: Physics
    Notes: High-energy electrons in plasmas have been attributed to various causes including trapping by electron plasma waves created by stimulated Raman scattering. A theory based on the acceleration of trapped electrons by such electron plasma waves as they propagate in the presence of a density gradient away from the region where they are created is presented. Results of a simple model and a wave–particle simulation consistent with experimental results are included.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.866441
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Helium emission spectra from doped samples of solid hydrogen and deuterium (1988)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 88 (1988), S. 7267-7272 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Using proton-beam irradiation at 15 MeV, the emission spectra from 3He and 4He doped samples of solid hydrogen and deuterium have been observed from 350–750 nm at 4.2 K. Such samples simulate the conditions of solid tritium or tritiated hydrogens after about six days of helium accretion. The spectra are very similar to pure helium gas spectra acquired at 4.2 K and closer still to spectra acquired using helium gas in the upper portion of a sample cell partially filled with solid hydrogen. The helium collects as macroscopically large bubbles whose pressure has been determined. The pure 4He gas spectrum at 4.2 K contains a band near 460 nm previously assigned to an unspecified excimer–dimer radiative transition. The pressure and isotope dependence of this band is presented which lends support to that interpretation. A mechanism is proposed for the transition.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.454337
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    Paper (German National Licenses)
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  • 6
    Electronic Resource
    Electronic Resource
    A reply (1989)
    Oxford, UK : Blackwell Publishing Ltd
    Anaesthesia 44 (1989), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.1989.tb11267.x
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  • 7
    Electronic Resource
    Electronic Resource
    Neutralization of Acid Wastes (1950)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 42 (1950), S. 599-605 
    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/ie50484a014
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    Paper (German National Licenses)
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  • 8
    Electronic Resource
    Electronic Resource
    Vapor-Liquid Equilibrium (1954)
    s.l. : American Chemical Society
    Industrial & engineering chemistry 46 (1954), S. 754-761 
    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/ie50532a041
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    Paper (German National Licenses)
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  • 9
    Electronic Resource
    Electronic Resource
    Crystal Structure of Ammonium Bicarbonate and a Possible Relationship with Ammonium Hypophosphate (1950)
    [s.l.] : Nature Publishing Group
    Nature 166 (1950), S. 435-436 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] We have recently found the positions of the atoms in the structure. Approximate atomic co-ordinates, which may yet be modified slightly as a result of work which is in progress, are given below expressed as fractions of the unit-cell edges taking a centre of symmetry as the origin. x y z C . ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/166435b0
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    Paper (German National Licenses)
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  • 10
    Electronic Resource
    Electronic Resource
    Application of immunoassays in dope analysis (1988)
    Springer
    Fresenius' Zeitschrift für analytische Chemie 330 (1988), S. 339-340 
    Details
    ISSN: 1618-2650
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00469262
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