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Pulse radiolysis of one-electron oxidation of rare tricyclic nucleoside derivative

Science China Chemistry 2003年第2期46卷 144-151页

作者：赵红卫江致勤窦大营吴铁一王文锋杜小行姚思德 Shanghai Institute of Nuclear Research Chinese Academy of Sciences Department of Chemistry Tongji Unviersity

one-electron oxidation of N-4-desmethylwyosine (dYt), a derivative of rare tricyclic nucleoside wyosine with several oxidative radicals, has been studied by using pulse radiolysis. The transient spectra of the radicals dYt˙+ and dYt(-H)˙ and the pK a of the radical cation were measured. The rate constants of reactions of dYt with SO 4 ˙? and CO 3 ˙? radicals have been determined and related reaction mechanisms were discussed.

关键词： rare tricyclic nucleoside derivative, one-electron oxidation, pulse radiolysis, radical, transient absorption spectra.

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Ground State Energy Calculations of Isoelectronic Series of He in Double-Zeta Approximation Using Coulomb Potential with Noninteger Indices

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Chinese Physics Letters 2008年第3期25卷 896-898页

作者： GUSEINOV I. Israfil AKSU Hüseyin Department of Physics Faculty of Arts and Sciences Onsekiz Mart University Canakkale Turkey

Using formulae for one- and two-electron integrals of Coulomb interaction potential fk （r） = r^-k with non-integer indices k established by one of the authors with the help of complete orthonormal sets of ψ^α-exponential-type orbitals （α = 1, 0,-1,-2,…）, we perform the calculations for isoelectronic series of the He atom containing nuclear charges from 2 to 10, where k = 1 - μ （-1 〈 μ 〈 0）. For this purpose we have used the double-zeta approximation, the configuration interaction and coupled-cluster methods employing the integer-n Slater-type orbitals as basis sets. It is demonstrated that the results of calculations obtained are better than the numerical Hartree-Fock values.

关键词： SLATER-TYPE ORBITALS MULTICENTER INTEGRALS one-electron OPEN-SHELLS SYSTEMS INTEGER ATOMS

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A pulse radiolysis study on electron affinity of piperonal

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Science China Chemistry 2005年第5期48卷 476-480页

作者： MA Jianhua1, LIN Weizhen2, WANG Wenfeng2 & YAO Side2 1. College of Biology Engineering, Jimei University, Xiamen 361021, China 2. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China College of Biology Engineering Jimei University Xiamen 361021 China

The piperonal electron affinity was studied using pulse radiolysis technique. The electron transfer reaction process between piperonal and anthraquinone-2-sulfate was observed in the pH 7 phosphoric acid salt buffer. The transient absorption spectra of electron transfer re-action between piperonal and anthraquinone-2-sulfate were obtained, and the initial proof of the electron transfer between electron donor and acceptor was provided directly. The one-electron reduction potential of piperonal was determined to be ?0.457 V.

关键词： piperonal, pulse radiolysis, one-electron reduction potential.

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Electrodynamics of the electron Orbital Motion in the Hydrogen Atom Considered in Reference to the Microstructure of the electron Particle and Its Spin

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Journal of Modern Physics 2015年第15期6卷 2202-2210页

作者： Stanislaw Olszewski Institute of Physical Chemistry Polish Academy of Sciences Warsaw Poland

Electrodynamics of the one-electron currents due to the circular orbital motion of the electron particle in the hydrogen atom has been examined. The motion is assumed to be induced by the time change of the magnetic field in the atom. A characteristic point is that the electric resistance calculated for the motion is independent of the orbit index and its size is similar to that obtained earlier experimentally for the planar free-electron-like structures considered in the integer quantum Hall effect. Other current parameters like conductivity and the relaxation time behave in a way similar to that being typical for metals. A special attention was attached to the relations between the current intensity and magnetic field. A correct reproduction of this field with the aid of the Biot-Savart law became possible when the geometrical microstructure of the electron particle has been explicitly taken into account. But the same microstructure properties do influence also the current velocity. In fact the current suitable for the Biot-Savart law should have a speed characteristic for a spinning electron particle and not that of a spinless electron circulating along the orbit of the original Bohr model.

关键词： one-electron orbital current in the hydrogen atom electron microstructure. electrodynamical properties without and with the electron spin

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A Variational Approach for Numerically Solving the Two-Component Radial Dirac Equation for one-Particle Systems

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Journal of Modern Physics 2012年第4期3卷 350-354页

作者： Antonio L. A. Fonseca Daniel L. Nascimento Fabio F. Monteiro Marco A. Amato Faculdade UnB Planaltina University of Brasília Brasília Brazil Institute of Physics and International Center for Condensed Matter University of Brasília Brasília Brazil

In this paper we propose a numerical approach to solve the relativistic Dirac equation suitable for computational calculations of one-electron systems. A variational procedure is carried out similar to the well-known Hylleraas computational method. An application of the method to hydrogen isoelectronic atoms is presented, showing its consistency and high accuracy, relative to the exact analytical eigenvalues.

关键词： one-electron Systems 2D Dirac Equation No-Inertial Frames Variational Approach

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