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  • 1
    Electronic Resource
    Electronic Resource
    THE ORIGIN AND NATURE OF SOLID PARTICLES IN SPACE (1964)
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 119 (1964), 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.1749-6632.1965.tb47420.x
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  • 2
    Electronic Resource
    Electronic Resource
    Photolysis of gaseous benzene at 1470 A (1967)
    s.l. : American Chemical Society
    The @journal of physical chemistry 〈Washington, DC〉 71 (1967), S. 3346-3347 
    Details
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/j100869a038
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  • 3
    Electronic Resource
    Electronic Resource
    Collisions between point masses and fractal aggregates (1989)
    s.l. : American Chemical Society
    Langmuir 5 (1989), S. 510-518 
    Details
    ISSN: 1520-5827
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/la00086a038
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  • 4
    Electronic Resource
    Electronic Resource
    Experimental studies of the vapor phase nucleation of refractory compounds. III. The condensation of silver (1986)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 85 (1986), S. 1116-1121 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Measurements are reported of the critical supersaturation necessary to initiate the vapor phase nucleation of silver over the ambient temperature range 500 K≤T≤950 K at total pressures of 250 and 500 Torr of hydrogen. The results are compared with the predictions of both classical nucleation theory and the theory of a physical spinodal developed by Rasmussen, neither of which adequately describe our observations. The nucleation of silver appears to be dependent on the total pressure of the system in a manner which suggests that three-body reactions are necessary in order to form the initial silver clusters (e.g., dimers) from the monoatomic vapor.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.451307
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  • 5
    Electronic Resource
    Electronic Resource
    On the defence (1987)
    [s.l.] : Nature Publishing Group
    Nature 326 (1987), S. 123-123 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] SIR-Alvin Weinberg's letter (Nature 324, 610; 1986), criticizing the Cornell Survey of the opinions of National Academy members of the Strategic Defense Initiative (SDI), has a basic flaw that invalidates his argument. His criticism is based on the expectation that SDI may be effective against an ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/326123d0
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  • 6
    Electronic Resource
    Electronic Resource
    On the Question of Interstellar Diamonds (1969)
    [s.l.] : Nature Publishing Group
    Nature 224 (1969), S. 570-570 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] More serious objections exist regarding the suggestion by Saslaw and Gaustad that diamonds may form and slow rapidly in conditions appropriate to cool stellar atmospheres. It is well known that graphite is the stable carbon phase below about 104 kbar. This occurs because of the lower free energy of ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/224570a0
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  • 7
    Electronic Resource
    Electronic Resource
    A note on the composition and structure of interstellar grains (1983)
    Springer
    Astrophysics and space science 95 (1983), S. 175-178 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Gürtleret al. (1981) argue that SiO could not be the material responsible for the interstellar 10 micron feature as had been proposed by Duleyet al. (1979). While Millar (1982) has quite successfully refuted the arguments of Gürtleret al. (1981), we present here some additional considerations which indicate that the model of Duleyet al. (1979) requires appreciable modification to be consistent with recent experimental results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00661168
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  • 8
    Electronic Resource
    Electronic Resource
    Some aspects of condensation in clouds (1979)
    Springer
    Astrophysics and space science 65 (1979), S. 167-171 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Several general features of nucleation characteristics of low density cosmic clouds are discussed. These are: (1) tendency for metastable condensates to form, (2) non-occurrence of nominal refractory molecule in the gas, (3) a strong temperature dependence of condensation at relatively low temperatures, and (4) significant vibrational disequilibrium in cosmic clouds. These support previous analyses by the author which indicate that equilibrium calculations have restricted applicability. A kinetic treatment of condensation is required for cosmic grains and the possibility of formulating such an analysis is pointed out.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00643497
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  • 9
    Electronic Resource
    Electronic Resource
    Comets: Chemistry and chemical evolution (1982)
    Springer
    Journal of molecular evolution 18 (1982), S. 157-160 
    Details
    ISSN: 1432-1432
    Keywords: Comets ; Cometary molecules ; Chemical evolution ; Origin of life
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Lasting commitment to cosmic chemistry and an awareness of the fascinating role of comets in that study was a consequence of an association with Harold Urey early in my astronomical career. Urey's influence on cometary research spread as colleagues with whom I was associated, in turn, developed their own programs in cometary chemistry. One phase of the Chicago research shows that Whipple's icy nucleus would be below about 250 K. This property, combined with their small internal pressure, means cometary interiors remain essentially unchanged during their lifetime. Observations of cometary spectra indicate that they are rich in simple organic species. Experiments on comet-like ice mixture suggests that the extensive array of interstellar molecules also may be found in comets. The capture of cometary debris by the earth or the impact of comets would have been an early source of biochemically significant molecules. Recent hypotheses on radiogenic heating and melting of water ice in the central zone of nuclei do not seem consistent with recent observations or ideas of structure. Thus comets are not a likely place for life to develop.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01733041
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  • 10
    Electronic Resource
    Electronic Resource
    Formation and properties of fluffy planetesimals (1994)
    Springer
    Astrophysics and space science 212 (1994), S. 43-47 
    Details
    ISSN: 1572-946X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A mechanism of accumulation of grains in the primordial solar nebula is described. This process produces porous, low density compressible aggregates. Compaction of the aggregates in a collision between them dissipates the kinetic energy of the collision and can result in efficient growth. A simple analysis of such collisions is developed and applied over a range of aggregate sizes and relative velocities. The results indicate that large planetesimals could grow through collisions rather than fragment if the conditions are favorable. Our modelling suggests that primordial asteroids and comets on the order of a kilometer in size will have low densities and irregular shapes.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00984507
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