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  • 1
    Electronic Resource
    Electronic Resource
    The Scattering Matrix and its Meromorphic Continuation in the Stark Effect Case (1999)
    Springer
    Letters in mathematical physics 48 (1999), S. 201-209 
    Details
    ISSN: 1573-0530
    Keywords: scattering matrix ; stark ; continuation ; Schrödinger.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract Quantum scattering in the presence of a constant electric field (‘Stark effect’) is considered. It is shown that the scattering matrix has a meromorphic continuation in the energy variable to the entire complex plane as an operator on L2(R n-1). The allowed potentials V form a general subclass of potentials that are short-range relative to the free Stark Hamiltonian: Roughly, the potential vanishes at infinity, and admits a decomposition $$V = V_\mathcal{A} + V_e$$ , where $$V_\mathcal{A}$$ is analytic in a sector with $$V_\mathcal{A} (x) = O(\left\langle {x_{} } \right\rangle ^{ - 1/2 - \varepsilon } )$$ , and $$V_e (x) = O({\text{e}}^{\mu x_1 } )$$ , for x1〈0 and some μ μ〉0. These potentials include the Coulomb potential. The wave operators used to define the scattering matrix are the two Hilbert space wave operators.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007565014305
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  • 2
    Electronic Resource
    Electronic Resource
    Phase shifts and the modified and møller wave operators (1982)
    Springer
    Letters in mathematical physics 6 (1982), S. 167-173 
    Details
    ISSN: 1573-0530
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Physics
    Notes: Abstract The Schrödinger operator H=−Δ+V is considered when the potential V is central, oscillating and possibly unbounded. An eigenfunction expansion for H is derived. Also, the phase shift of the generalized eigenfunctions of H is computed. The expansion and shift are, together, applied to the study of the wave operators of scattering theory. The modified wave operators, for H and H 0=−Δ are shown to exist and be complete and a condition on V is derived which is necessary and sufficient for the Møller wave operators to exist and be complete. Spectral properties of H are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00403268
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  • 3
    Electronic Resource
    Electronic Resource
    Allometric relationships for Eucalyptus nitens (Deane and Maiden) Maiden plantations (1999)
    Springer
    Trees 14 (1999), S. 91-101 
    Details
    ISSN: 0931-1890
    Keywords: Key words Allometry ; Leaf area ; Sapwood area ; Crown structure ; Eucalyptus nitens
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract  Allometric relationships between stem, leaf area and crown dimensions were determined for Eucalyptus nitens (Deane and Maiden) Maiden using 81 trees sampled from 13 post-canopy closure sites and 34 trees sampled from 6 pre-canopy closure sites. These sites differed in site quality, stand age, fertiliser treatment, stand density and levels of weed infestation. Overall, tree age ranged from 2 to 13 years, tree height from 1.4 to 26.1 m and diameter at breast height from 0.6 to 38.7 cm. Pre-canopy closure trees exhibited site-specific relationships which were to some extent confounded with tree age. However, post-canopy closure trees had relationships which were independent of site, age and silvicultural treatments. Strong relationships between structural components were found for both stem and crown. Stem diameter at breast height was non-linearly related to tree height and crown length. Stem sapwood area (breast height or crown base) could be predicted from stem cross-sectional area. For post-canopy closure trees, a functional relationship between sapwood area (breast height and crown base) and leaf area was site-independent. The lack of specificity in terms of both site and management techniques enables these relationships to be applied generally to E. nitens plantations in Tasmania.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/PL00009756
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  • 4
    Electronic Resource
    Electronic Resource
    Clay minerals as sorbents for nuclear reactor activation products (1995)
    Springer
    Journal of materials science 30 (1995), S. 583-586 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A comparison is presented of cobalt and chromium uptake on different clays. It is shown that clay minerals are good adsorbents for cobalt and chromium in waste effluents. The sorption of cobalt and chromium on the clays studied was by ion exchange and surface complex formation, respectively. In addition, the percentage of either cobalt or chromium removed in a mixed solution environment is higher than the individual adsorption in single-component experiments. This proves a synergistic mechanism. The optimum uptake of each metal ion from mixed species was achieved by montmorillonite clay in the calcium form.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00356314
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  • 5
    Electronic Resource
    Electronic Resource
    A low shear rate turbulent flow apparatus (1971)
    Springer
    Flow, turbulence and combustion 23 (1971), S. 368-372 
    Details
    ISSN: 1573-1987
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract This paper describes some experiments on a turbulent flow viscometer consisting of a continuous pipe loop of transparent material mounted on a circular wheel. The wheel is partially filled with fluid and rotated at a constant speed. The results show that the apparatus gives sensible results and although only a limited range of Reynolds numbers is possible it can be used as a useful qualitative apparatus to test dilute fluids which have abnormal turbulent flow properties.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00413211
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  • 6
    Electronic Resource
    Electronic Resource
    Kinetics of contamination of stainless steel in contact with radioactive solutions at ambient temperatures (1995)
    Springer
    Journal of radioanalytical and nuclear chemistry 189 (1995), S. 65-70 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract During the drainage of nuclear reactors for decommissioning or maintenance the activity is plated out on the steel surfaces can be a major dose burden to workers and has to be considered for final disposal. A simple model has been developed to correlate the kinetics of plate-out of radioactive materials on stainless steel surfaces at ambient temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02040182
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  • 7
    Electronic Resource
    Electronic Resource
    An experimental investigation of uranium redox reactions in an electrolytic cell with a cation exchange membrane (1997)
    Springer
    Journal of radioanalytical and nuclear chemistry 218 (1997), S. 27-32 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract This paper investigates the simultaneous reduction and oxidation reactions of uranium in hydrochloric acid media. The redox reactions were carried out in a cell fitted with a cation exchange membrane and hexavalent uranium was reduced to the tetravalent state in the cathode chamber. The reverse reaction was carried out in the anode side of the cell. The reaction rate was found to be independent of the uranium concentration and the extent of reaction was linear with time. There is evidence of uranium flux across the membrane.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02033969
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  • 8
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    Spatial Propagation of Protein Polymerization (2014)
    American Physical Society
    Details
    Publication Date: 2014-03-04
    Print ISSN: 0031-9007
    Electronic ISSN: 1079-7114
    Topics: Physics
    Published by American Physical Society
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  • 9
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    Kinetics of contamination of stainless steel in contact with radioactive solutions at ambient temperatures (1995)
    Springer
    Details
    Publication Date: 1995-01-01
    Print ISSN: 0236-5731
    Electronic ISSN: 1588-2780
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Published by Springer
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  • 10
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    Thermal island destabilization and the Greenwald limit (2015)
    American Institute of Physics (AIP)
    Details
    Publication Date: 2015-02-25
    Description: Magnetic reconnection is ubiquitous in the magnetosphere, the solar corona, and in toroidal fusion research discharges. In a fusion device, a magnetic island saturates at a width which produces a minimum in the magnetic energy of the configuration. At saturation, the modified current density profile, a function of the flux in the island, is essentially flat, the growth rate proportional to the difference in the current at the O-point and the X-point. Further modification of the current density profile in the island interior causes a change in the island stability and additional growth or contraction of the saturated island. Because field lines in an island are isolated from the outside plasma, an island can heat or cool preferentially depending on the balance of Ohmic heating and radiation loss in the interior, changing the resistivity and hence the current in the island. A simple model of island destabilization due to radiation cooling of the island is constructed, and the effect of modification of the current within an island is calculated. An additional destabilization effect is described, and it is shown that a small imbalance of heating can lead to exponential growth of the island. A destabilized magnetic island near the plasma edge can lead to plasma loss, and because the radiation is proportional to plasma density and charge, this effect can cause an impurity dependent density limit.
    Print ISSN: 1070-664X
    Electronic ISSN: 1089-7674
    Topics: Physics
    Published by American Institute of Physics (AIP)
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