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1974 (322)
81Author    HaaseRequires cookie*
 Title     
 Abstract    Transport Numbers in Ionic Melts For an ionic melt, consisting of three ion constituents, the limiting values for infinite dilution of all the internal and effective transport numbers are calculated. The diagrams shown in an earlier paper, concerning LiN 03 + AgN03 at 260 °C, are extended so to include the limiting behaviour of the effective transport numbers. 
  Reference    (Z. Naturforsch. 29a, 534 [1974]; eingegangen am 28. Januar 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0534_n.pdf 
 Identifier    ZNA-1974-29a-0534_n 
 Volume    29 
82Author    Gerd MarowskyRequires cookie*
 Title    A Single-mode Dye Ring; Laser with O utput Coupler Using Frustrated Total Internal Reflection  
 Abstract    Details of a dye ring laser with an output coupler of adjustable transmission based on frustrated total internal reflection are reported. The construction allows optimization of tuning range or output power. Using appropriate intra­ cavity etalons and a Fox-Smith reflector as mode selector reliable single-mode operation was observed with peak powers of 1 kW and bandwidths of 0.03 pm. 
  Reference    (Z. Naturforsch. 29a, 536 [1974]; received 19 January 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0536_n.pdf 
 Identifier    ZNA-1974-29a-0536_n 
 Volume    29 
83Author    P. MittelstaedtRequires cookie*
 Title    Über das Einstein-Podolsky-Rosen Paradoxon  
 Abstract    On the Einstein-Podolsky-Rosen Paradox The EPR experiment is analysed in terms of ordinary quantum mechanics and shown to be com­ patible with the orthodox interpretation of this theory. There is no need to refer to Bohrs resolution of the EPR paradox, nor is it necessary to assume any further unusual properties of the quantum physical reality. In particular, it is shown that the EPR experiment does not contradict the fact that incommensurable properties cannot be objectivized simultaneously in a quantum mechanical system, and that the measuring process can be understood in terms of quantum theory as an interaction of the measuring apparatus and the object system. From these results it follows that there is no reason to search for modifications of the quantum theory which might be more convenient for a realistic interpretation of the EPR experiment. Fur­ thermore, the EPR experiment cannot be used as a motivation for introducing hidden variables into the quantum theory. Experimental investigations which try to test quantum mechanics in respect to the possibility of introducing local hidden variables can therefore not be justified by the EPR paradox. 
  Reference    (Z. Naturforsch. 29a, 539 [1974]; eingegangen am 16. Januar 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0539.pdf 
 Identifier    ZNA-1974-29a-0539 
 Volume    29 
84Author    H. StumpfRequires cookie*
 Title    O n the Calculation of Nonlinear Spinor Field Functionals. II  
 Abstract    In preceding papers a functional quantum theory has been developped. In this theory the physi­ cal observables are derived only by functional operations from the corresponding state functionals. To obtain physical informations therefore the state functionals have to be known and calculational procedures have to be developped. As high energy phenomena are of interest the state functionals of the nonlinear spinor field are considered. In a preceding paper I a calculation method for bound state functionals has been proposed. In this paper this method is extended to the calculation of scattering state functionals, resulting in channel equations for the various scattering processes in the dynamics of the nonlinear spinor field. 
  Reference    (Z. Naturforsch. 29a, 549 [1974]; received January 18 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0549.pdf 
 Identifier    ZNA-1974-29a-0549 
 Volume    29 
85Author    K. RagallerRequires cookie*
 Title    Investigations on Instabilities of Electric Arcs  
 Abstract    A general formalism is derived, that allows the evaluation of magnetic instabilities of all types of electric arc. It is shown that a stability criterion exists which is determined by the interaction between the magnetic forces, the frictional force and the so-called isotherm movement. This criterion can be expressed in terms of a dimensionless parameter Mk: when Mk is smaller than a critical value MkCT, then the arc is absolutely stable, when Mk = Mkcr a stationary, deflected condition arises, and when Mk^>MkC T the arc is unstable. Depending on the magnitude of the growth rate however, a convective stabilisation, caused by an axial flow component, can result. The results of the theory are applied to a variety of technically interesting arcs, such as axially blown arcs, arcs in gaps and transversely blown arcs. 
  Reference    (Z. Naturforsch. 29a, 556 [1974]; received January 16 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0556.pdf 
 Identifier    ZNA-1974-29a-0556 
 Volume    29 
86Author    G. Meinhold, F. Demmig, W. BötticherRequires cookie*
 Title    Ionisationsmechanismus in der Relaxationszone schwach instationärer Stoßwellen in Argon und Krypton A) Einleitung  
 Abstract    Ionisation Mechanism in the Relaxation Zone oj Weakly Instationary Shock Waves in Argon and Krypton The primary ionisation relaxation up to electron densities of rae = 4-1013 cm-3 is investigated by means of 4 mm — microwave — interferometry. The values of the timedependent gas tempe­ rature Ta, and gas density na behind the shock front are calculated using a gasdynamic model which strictly takes into account the instationarity of the flow. From the results it is concluded that neither the familiar two step process dominated by atom collisions nor the assumption of additional excitation processes by electron collisions can fully describe the observed ionisation rates. There is evidence that both the ionisation rates and the electron temperature are influenced by transitions between the first four excited states due to superelastic electron collisions. As a result the electron temperature may even exceed the gas temperature. 
  Reference    (Z. Naturforsch. 29a, 568 [1974]; eingegangen am 24. Dezember 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0568.pdf 
 Identifier    ZNA-1974-29a-0568 
 Volume    29 
87Author    H. Zinko, J. JohanssonRequires cookie*
 Title    Investigation of the Afterglow in Helium-Xenon Mixtures at High Pressures  
 Abstract    The behaviour of high pressure helium afterglows has been measured by means of conductivity and light intensity decay measurements. The plasma was created in a pulsed discharge of typically 30 usee length and then investigated by means of time resolved spectroscopy and probing pulse diagnostics under conditions which are of interest for noble gas afterglow MHD generators, i. e. a pressure range of 1—4 atm static pressure, the temperature varying from 600 — 970 °K. A marked increase in plasma lifetime was found when xenon was seeded with a rate of 10 to 10-3 to helium. This effect is ascribed partly to the influence of Penning ionization and partly to the fact, that slowly recombining atomic xenon ions dominate the recombination behaviour at the lower xenon seed rates during the investigated time interval of 150 /usee. The pressure dependent effective recombination coefficient is found to be (0.95 + 1.95 • 10-3 P0) 10-8 cm3 sec-1 for pure helium and (0.2 + 5.1 -IO-4 P0) 10-8 cm3 sec-1 for a xenon seed rate of 3-10-4 (P" = reduced pressure in Torr). 
  Reference    (Z. Naturforsch. 29a, 577—587 [1974]; received October 12 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0577.pdf 
 Identifier    ZNA-1974-29a-0577 
 Volume    29 
88Author    G. RimpelRequires cookie*
 Title    Linienstärken in der 4-0-und 5-0-Rotationsschwingungsbande von Fluorwasserstoff  
  Reference    (Z. Naturforsch. 29a, 588 [1974]; eingegangen am 2 0. Dezember 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0588.pdf 
 Identifier    ZNA-1974-29a-0588 
 Volume    29 
89Author    M. S. El-Nesr, E. Bashandy, M. G. MousaRequires cookie*
 Title    Electromagnetic Transitions in 177H f  
 Abstract    The gamma transitions in 177Hf have been measured using a 50 cm radius iron-free double focusing beta-ray spectrometer. The decay scheme is investigated and the K-conversion coefficients of the 208 and 321 keV transitions have been determined. Comparison with theoretical conversion coefficients for pure E l radiation calculated by Sliv and Band indicates that the K-conversion process of the 208 keV transition is normal while the large anomaly observed in the K-conversion process of the 321 keV E l transition is compatible with a large M2 admixture or more probable with the presence of penetration matrix elements. From com­ parison with theoretical conversion coefficients the 113 keV M1+E2 transition has been found to be (95.12+0.6)% E2 corresponding to |(5 ,1 = 4.38±0.33. The decay scheme of 177Lu is discussed in terms of nuclear models. 
  Reference    (Z. Naturforsch. 29a, 593 [1974]; received 15 November 19713) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0593.pdf 
 Identifier    ZNA-1974-29a-0593 
 Volume    29 
90Author    B. B. Srivastava, A. K. Dublish, A. N. PandeyRequires cookie*
 Title      
 Abstract    The GVFF constants and m ean am plitudes of vibration have been calculated for 21 hexahalo species of group IV A and V I A elem ents. The influence of the cation on these constants is d is­ cussed. It has been found that the chemical bonds in the environment of a light cation are relatively stronger than in that of a heavy cation in case of inorganic cations w hile the situation is opposite in case of organic cations. 
  Reference    (Z. Naturforsch. 29a, 602 [1974]; received January 31 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0602.pdf 
 Identifier    ZNA-1974-29a-0602 
 Volume    29 
91Author    B. Grosswendt, W. WitschelRequires cookie*
 Title    Calculation of Line Broadening Cross Sections for Level Crossing Experiments in Alkali-Rare Gas Systems  
 Abstract    U sing a sim ple approximation for the theoretical atom ic interaction constants cross section data for level crossing and Hanle-effect lin e broadening experim ents in Rb, M g+ and Ca+ rare gas system s could be derived. It is shown that in the Rb system the interaction C6R ~ 6 is predominant and that the results are little influenced by dipole-quadrupole and repulsive interactions in the frame work of the Lindholm-Foley-Hindmarsh theory. 
  Reference    (Z. Naturforsch. 29a, 605 [1974]; received January 26th 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0605.pdf 
 Identifier    ZNA-1974-29a-0605 
 Volume    29 
92Author    Gertraud Mark, Franz MarkRequires cookie*
 Title    Das Zeitgesetz der photochemischen Folgereaktion 1. Ordnung unter Berücksichtigung der inneren Lichtfilterwirkung  
 Abstract    The Rate Expression for Photochemical Consecutive Reactions of the First Order with Conderation of the Internal Filter Effect hi hr The rate expression for the photochem ical consecutive reaction of first order A — * ■ B -> C, where 
  Reference    (Z. Naturforsch. 29a, 610 [1974]; eingegangen am 12. Dezember 1973) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0610.pdf 
 Identifier    ZNA-1974-29a-0610 
 Volume    29 
93Author    H. Krebs, H. WeyandRequires cookie*
 Title    Der Einfluß homöopolarer Bindungsanteile auf die Struktur anorganischer Salze IV. Salzartige Verbindungen  
 Abstract    The Influence of Homopolar Bond Parts on the Structure of Inorganic Salts. IV. Salt-like Compounds. It is shown that the s-and p-orbitals of the alkali atom valency electrons participate in the bond system of the alkali halogenides. The so-called ionic bond is m erely an approximation. To prove this, the electron density distribution in LiF, the quadrupole and the superhyperfine electron-nucleon interaction in Cr+-doted LiF, N aF and NaCl, and the influence of the s-orbitals on the superconducting properties of com pounds containing alkali atoms are considered. 
  Reference    (Z. Naturforsch. 29a, 614 [1974]; eingegangen am 23. Dezember 1973 *) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0614.pdf 
 Identifier    ZNA-1974-29a-0614 
 Volume    29 
94Author    W. Brockner, H. Hovdan, S. J. CyvinRequires cookie*
 Title    Kraftkonstanten, mittlere Schwingungsamplituden, Coriolis-Kopplungskonstanten und thermodynamische Funktionen der Moleküle W OCl4 und WOBr4  
 Abstract    A normal co-ordinate analysis of the m olecules W 0C 14 and WOBr4 has been carried out follow ing W ilson's FG matrix method. V alence force constants based on known (W OCl4) and estimated (W OBr4) m olecular parameters have been evaluated. The results support the assignm ent of the known Raman spectra of W 0C14 . A lso the m ean am plitudes of vibration and the perpendicular 
  Reference    (Z. Naturforsch. 29a, 620 [1974]; eingegangen am 5. Januar 1974) 
  Published    1974 
  Keywords    Force Constants, Mean Amplitudes, Coriolis Coupling Constants, Thermodynamic Functions, WOCZ 4, WOBri 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0620.pdf 
 Identifier    ZNA-1974-29a-0620 
 Volume    29 
95Author    J. Koller, A. Ažman, N. T. RinajstićRequires cookie*
 Title    Some ab Initio Calculations on Indole, Isoindole, Benzofuran, and Isobenzofuran  
 Abstract    Ab initio calculations in the framework of the m ethodology of P ople et al. have been performed on indole, isoindole, benzofuran. and isobenzofuran. Several m olecular properties (dipole m oments, n. m. r. chem ical shifts, stabilities, and reactivities) correlate w ell with calculated in d ices (charge densities, HOMO-LUMO separation). The calculations failed to give m agnitudes of first ionization potentials, although the correct trends are reproduced, i. e. giving higher values to more stable iso ­ mers. Som e of the obtained results (charge densities, dipole m oments) parallel C N D O /2 values. In tro d u c tio n 
  Reference    (Z. Naturforsch. 29a, 624 [1974]; received January 9 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0624.pdf 
 Identifier    ZNA-1974-29a-0624 
 Volume    29 
96Author    ManfredW. Innewisser, BrendaP W InnewisserRequires cookie*
 Title    The Millimeter Wave Spectrum of DCNO : An Example of Current Measurements in the Frequency Range from 60 to 350 GHz  
 Abstract    An efficient system for prelim inary data reduction is described which com pletes a recently devel­ oped data acquisition and reduction system for the measurem ent of m illim eter wave absorption lines with the help of a dedicated com puter. A sim ple method of autom atically determ ining the absorption line centers is given. Rotational transitions of DCNO, m easured with the above system , are reported for the ground state and the first excited state of each of the two bending m odes r4 and v5 . The rotational and rotation-vibration constants obtained for these states are B0 = 10,29 2 .4 8 3 4 0 (3 1) MHz, D0 = 3 .5 4 1 8 (1 0) kHz, Bv4 = 1 0 ,3 06.00780(45) MHz, DVi = 3 .6 4 0 9 (2 2) kHz, BV5 = 10,338.65942 (32) MHz, DV5 = 3.6208 (16) kHz. The Z-type doubling constants q.t0) and q £ X) agree with the values obtained previously from direct Z-type doubling transitions. 
  Reference    (Z. Naturforsch. 29a, 633—641 [1974]; received January 18 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0633.pdf 
 Identifier    ZNA-1974-29a-0633 
 Volume    29 
97Author    R. Laupert, G. Von BünauRequires cookie*
 Title    Untersuchung konkurrierender Reaktionen in strömenden Kohlenwasserstoff-Gemischen  
 Abstract    The reactions of atom ic hydrogen with propene, butene-2, and trim ethylethylene, and with m ixtures of these olefins with ethylene have been studied using flow apparatus. It was found that under the experim ental conditions intermediate alkyl radicals reacted p ractically only with atom ic hydrogen. This m ade possible a kinetic evaluation of the results yield in g num erical values of several relative rate constants of com peting interm ediate reactions. 
  Reference    (Z. Naturforsch. 29a, 642 [1974]; eingegangen am 21. Januar 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0642.pdf 
 Identifier    ZNA-1974-29a-0642 
 Volume    29 
98Author    B. M. Rode, Walter Kosmus, Edgar NachbaurRequires cookie*
 Title    Zur Nichtlinearität der NCO-Gruppe (MO-SCF-Berechnungen an Isocyanaten III)  
 Abstract    The nonlinearity of the NCO group, as to be calculated after the CNDO method and in agree­ ment with some experim ental data, has been investigated system atically. The energy values, ca l­ culated for different angles, show the nuclear repulsion energy to be the determ ining factor for the bent (trans-) configuration of these com pounds. The extent of this angle cannot be explained with classical chem ical characteristics. A significant correlation is found, however, with the e lec­ tronic situation at the C-atom, w hose net charge and covalent bonding are likew ise influenced by the NCO angle. E in leitu n g 
  Reference    (Z. Naturforsch. 29a, 650—652 [1974]; eingegangen am 23. Januar 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0650.pdf 
 Identifier    ZNA-1974-29a-0650 
 Volume    29 
99Author    Tetsuo Shiga, Hitoshi Yamaoka, Anders LundRequires cookie*
 Title    Conformation and Mobility of Radicals in Heterogeneous Systems ESR Spectra at 4 K of Methyl, Ethyl, n-Propyl and Allyl Radicals Adsorbed on Silica Gel  
 Abstract    ESR spectra of the m ethyl, ethyl, n-propyl and allyl radicals adsorbed on silica gel were analysed in terms of gr-factor and hyperfine coupling anisotropies. T h e m agnitudes of the anisotropies de­ monstrate that at 4 K the m ethyl radical reorients about its threefold axis, and the ethyl radical re­ orients about the C —C-bond axis. The experim ental data for the m ethyl and ethyl radicals have been com bined to yield the dipolar hyperfine coupling for an a-proton. The constants thus derived are Z ?x= 12.5G , By = —13.0 G and S 2= 0 .5 G. T he n-propyl radical has a rigid conform ation at 4 K with a spectrum which arises by the hyperfine interactions of two a protons and two ß protons. The ß protons have a#i = 40 G and aß2 = 22 G, which is indicative of an asymmetric conformation. The allyl radical at 4 K also gives the rigid lim it spectrum. The temperature dependence of the spectra was studied in the range 4 K — 183 K. 
  Reference    (Z. Naturforsch. 29a, 653 [1974]; received February 2 1974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0653.pdf 
 Identifier    ZNA-1974-29a-0653 
 Volume    29 
100Author    B. W. Epperlein, H. Krüger, 0. Lutz, A. SchwenkRequires cookie*
 Title    67Zn NMR Anomalous Solvent Isotope Effect in Aqueous Solutions  
 Abstract    For 67Zn NMR lines of solutions of ZnCl2, ZnBr2, and Znl2 in H20 and D20 an anomalous solvent isotope effect is reported. In D20 solutions the lines are shifted to higher frequencies. The difference between the shieldings in H20 and D20 is e.g. o(H 20) — o(D20) = (13.1 ±0.7) ppm for a concentration of 0 .0 2 moles zinc bromide per mole solvent. 
  Reference    (Z. Naturforsch. 29a, 660 [1974]; received February 15 6974) 
  Published    1974 
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 TEI-XML for    default:Reihe_A/29/ZNA-1974-29a-0660_n.pdf 
 Identifier    ZNA-1974-29a-0660_n 
 Volume    29 
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