Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences

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Ein neues c′1Πg — b1IIu-Bandensystem des C2-Moleküls
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 22 Số 12 - Trang 2015-2023 - 1967
G. Messerle, L. Krauss
Homogeneous rotational perturbations (Δ Λ = 0) were found in the DESLANDRES-D’AZAMBUJA bands (c1Πg — b1Πu) for v′ ≧ 3. The rotational analysis showed that the c1Πg state is perturbed by an hitherto unknown c′1Πg state. Vibrational levels of the c′1Πg state were determined from ν = 0 up to ν = 5. Furthermore some additional vibrational levels of the c1Πg state could be identified up to ν = 8. The d... hiện toàn bộ
Notizen: Fluorescence by the Vacuum-uv Photolysis of Acetylene
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 26 Số 10 - Trang 1770-1771 - 1971
K. H. Becker, D. Haaks, Maria Schürgers
Steric Interaction of Fluid Membranes in Multilayer Systems
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 33 Số 3 - Trang 305-315 - 1978
W. Helfrich
Abstract The out-of-plane fluctuations of fluid membranes are sterically hindered in multilayer systems. The repulsive interaction associated with the steric or excluded-volume effect is studied theoretically by two methods. The interaction energy per unit area of membrane is derived as a function of temperature, membrane curvature elasticity and mean membrane spacing; it is inversely proportional... hiện toàn bộ
Symmetrieeigenschaften der Energiebänder der Chalkopyritstruktur
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 19 Số 7-8 - Trang 844-850 - 1964
R. Sandrock, J. Treusch
Die Ausnutzung gruppentheoretischer Methoden gestattet eine Untersuchung von Bandstrukturen allein auf Grund der Kristallsymmetrie. Diese Methoden werden auf ternäre Halbleiter mit Chalkopyritstruktur angewandt. Dazu werden die Charaktertafeln aller Wellenvektorgruppen zur Raumgruppe D12 2d aufgestellt. Aus ihnen werden qualitative Folgerungen für die Bandstruktur mit und ohne Spin gezogen. Sie be... hiện toàn bộ
Über die Berechnung von Franck-Condon-Integralen
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 15 Số 2 - Trang 123-128 - 1960
Samuel S. Koide
A new method of approach is proposed for the problem of electronic transitions accompanied by the excitation of molecular or crystal vibrations. The Hamiltonian of the normal vibrations is expressed in terms of the so-called creation and annihilation operators, and the change in the equilibrium nuclear distances and vibrational frequencies are represented by transformations which are also expresse... hiện toàn bộ
Exakte Berechnung von Franck-Condon-Integralen
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 14 Số 1 - Trang 81-91 - 1959
Max Wagner
Bei optischen und strahlungslosen Übergängen zwischen Elektronenzuständen an einem Kristallstörzentrum werden die Ruhelagen der Gitteroszillatoren (d. h. die Nullpunkte der Normalkoordinaten) verschoben. Der Oszillatoranteil der FRANCK-CONDON-Integrale solcher Übergänge wird exakt berechnet, zunächst unter der Annahme, daß die Oszillatorfrequenzen sich bei dem Übergang nicht ändern. Diese Integral... hiện toàn bộ
Über elektrische Wellen längs eines dielektrischen Zylinders in einer dielektrischen Umgebung, wobei eines oder beide der beiden Medien Plasmen sind
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 5 Số 4 - Trang 181-191 - 1950
Winfried Otto Schumann
Abstract Es wird die Ausbreitung elektromagnetischer Wellen längs Kreiszylindern untersucht: 1. Dielektrischer Zylinder in Plasmaatmosphäre, 2. Plasmazylinder in dielektrischer Atmosphäre, 3. Plasmazylinder in Plasmaatmosphäre. Ferner werden die stehenden Wellen (Eigen-schwingungen) untersucht, die durch zwei ebene, leitende Wände senkrecht zur Zylinderachse erzeugt werden. Infolge der Dispersion ... hiện toàn bộ
Analytical Solitons for Langmuir Waves in Plasma Physics with Cubic Nonlinearity and Perturbations
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 71 Số 9 - Trang 807-815 - 2016
Qin Zhou, Mohammad Mirzazadeh
Abstract We presented an analytical study on dynamics of solitons for Langmuir waves in plasma physics. The mathematical model is given by the perturbed nonlinear Schrödinger equation with full nonlinearity and Kerr law nonlinearity. There are three techniques of integrability were employed to extract exact solutions along with the integrability conditions. The topological 1-soliton solutions, sin... hiện toàn bộ
Field-dependent Mechanism of Anomalous Proton Conductivity and the Polarizability of Hydrogen Bonds with Tunneling Protons
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 25 Số 5 - Trang 627-634 - 1970
E. G. Weidemann, G. Zundel
The displacement of the excess charge of the proton in acid solutions is caused by a structure migration of groupings H5O2 + or H9O4 + . The processes which take place during structure migration are discussed on the basis of results gained in IR-investigations. In an electrical field the structure migration is given a preferred direction. The hydrogen bond with the tunneling proton in H5O2 + and t... hiện toàn bộ
Notizen: Mischkristallbildung bei AIII Bv-Verbindungen
Zeitschrift fur Naturforschung - Section A Journal of Physical Sciences - Tập 10 Số 6 - Trang 502-503 - 1955
O. G. Folberth
Tổng số: 77   
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