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Articoli di riviste sul tema "Electron configuration"

Autore: Grafiati

Pubblicato: 4 giugno 2021

Ultima modifica: 25 luglio 2025

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1

Pressler, David E. "Atomic Electron Configuration." International Journal of Modern Physics A 16, supp01c (2001): 922–24. http://dx.doi.org/10.1142/s0217751x01008503.

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In this work I suggest that early twentieth century theoretical physicists did not have enough facts or experimental data to formulate a consistent atomic model and as a result the concept of the atom needs revised. I conclude that the new atomic model presented is based only on first principles, is easy to understand and visualize, and provides such a significant theoretical advance as to be a final theory.

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2

Yang, Qing, and J. D. Fan. "Topologic configuration of electron." Modern Physics Letters A 33, no. 26 (2018): 1850163. http://dx.doi.org/10.1142/s0217732318501638.

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Motion of an electron is much different from that of a kind of matter in classical mechanics. Although it is impossible to directly observe the configuration of a bare electron, it is never as simple as to treat it as a three-dimensional (3D) particle in the microscopic world because the electron itself certainly has its own topological configuration, so that it presents a field of a unit charge and a spin, etc. An electron produces a magnetic field in motion and also can radiate or absorb an electromagnetic field in its accelerating motions. Thus, the topological configuration of an electron

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3

Mercero, José M., Joseph E. Fowler, Cecilia Sarasola, and Jesus M. Ugalde. "Atomic configuration-interaction electron-electron counterbalance densities." Physical Review A 59, no. 6 (1999): 4255–58. http://dx.doi.org/10.1103/physreva.59.4255.

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4

Mulyawati, Tin, and Eka Purwanda. "Implementasi Alat Peraga “Ikon-E” Merupakan Kunci Sukses Memahami Konfigurasi Elektron (Cara Pengisian Konfigurasi Elektron Sebagai Media Pembelajaran Inovatif di SMA)." NUSRA : Jurnal Penelitian dan Ilmu Pendidikan 5, no. 2 (2024): 700–706. http://dx.doi.org/10.55681/nusra.v5i2.2631.

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This research aims to evaluate the effectiveness of using electron configuration content tools ("e-icons") as a learning medium at the Senior High School (SMA) level. Electron configuration is an important concept in chemistry and understanding it can improve students' understanding of class X atomic structure material. Research data will be collected through a knowledge test on the group of students who use the "e-ikon" tool, called the experimental group, and the group of students without using the "e-ikon" tool, called the control group. Also, through a questionnaire that assesses students'

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5

Ulianov MSc, PhD, Policarpo Yoshin. "Comparison of pauling and Ulianov electron distribution models." Material Science & Engineering International Journal 8, no. 2 (2024): 49–54. http://dx.doi.org/10.15406/mseij.2024.08.00235.

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This study presents a comprehensive comparison between the traditional Pauling electron distribution model and the innovative Ulianov model proposed by Dr. Policarpo Yoshin Ulianov. The Pauling model, which relies on the Aufbau principle, Hund’s rule, and the Pauli Exclusion Principle, has been a cornerstone in understanding electron configurations within atoms, organizing electrons into s, p, d, and f orbitals. In contrast, the Ulianov model introduces a novel linear progression for electron occupancy, proposing additional orbitals (g and h) to account for electron distribution in a manner th

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6

Kumar, Amit, Krishna Katuri, Piet Lens, and Dónal Leech. "Does bioelectrochemical cell configuration and anode potential affect biofilm response?" Biochemical Society Transactions 40, no. 6 (2012): 1308–14. http://dx.doi.org/10.1042/bst20120130.

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Electrochemical gradients are the backbone of basic cellular functions, including chemo-osmotic transport and ATP synthesis. Microbial growth, terminal respiratory proteins and external electron transfer are major pathways competing for electrons. In BESs (bioelectrochemical systems), such as MFCs (microbial fuel cells), the electron flow can be via soluble inorganic/organic molecules or to a solid surface. The flow of electrons towards a solid surface can be via outer-membrane cytochromes or electron-shuttle molecules, mediated by conductive protein nanowires or extracellular matrices. In MEC

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7

McGarrah, D. B., and M. L. Brake. "Argon ion excitation by relativistic electrons: I. Collision cross sections and deposition efficiencies." Laser and Particle Beams 8, no. 3 (1990): 493–506. http://dx.doi.org/10.1017/s0263034600008739.

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Calculations of the electron impact excitation cross sections and deposition efficiencies for singly ionized argon with electrons of energies up to and including relativistic values have been made using the first Born approximation and the generalized oscillator formalism. Deposition efficiencies for fast electrons were generated from the Peterson and Green integral equation. Cross sections and efficiencies were produced for 29 transitions from the ground state configuration of Arii to excited energy levels with (Ne)3s23p44s and (Ne)3s23p43d configurations and for 40 transitions between excite

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8

Morehouse, Aaron, Kelton C. Ireland, and Gobinda C. Saha. "An Investigation into the Effects of Electric Field Uniformity on Electrospun TPU Fiber Nano-Scale Morphology." Micromachines 14, no. 1 (2023): 199. http://dx.doi.org/10.3390/mi14010199.

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ANSYS Maxwell was used to replicate the conditions of two potential electrospinning configurations: a needle–plate and a parallel-plate configuration. Simulations showed that the electric field generated within the parallel-plate configuration was much more uniform than that within the needle–plate configuration. Both configurations were assembled and used electrospin fibers at three different spinning distances (10 cm, 12 cm, and 15 cm), at a consistent electric field strength of 1.7 kV/cm. Scanning electron microscopy was used to compare the morphologies of the fibers produced in both config

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9

Stojković, S. M., J. P. Šetrajčić, and Igor Vragović. "Electron Configuration of Carbon Nanotubes." Materials Science Forum 352 (August 2000): 129–34. http://dx.doi.org/10.4028/www.scientific.net/msf.352.129.

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10

Pe rez-Garrido, M. Ortun-O, A. M. S, A. "Configuration space in electron glasses." Philosophical Magazine B 81, no. 2 (2001): 151–62. http://dx.doi.org/10.1080/13642810010009366.

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11

Pérez-Garrido, A., M. Ortuño, A. M. Somoza, and A. Díaz-Sánchez. "Configuration space in electron glasses." Philosophical Magazine B 81, no. 2 (2001): 151–62. http://dx.doi.org/10.1080/13642810108216532.

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12

Liu, Rulin, Liang Fang, Yue Hao, and Yaqing Chi. "Influence of Oxygen Vacancy Density on the Polaronic Configuration in Rutile." Materials 11, no. 11 (2018): 2156. http://dx.doi.org/10.3390/ma11112156.

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Polaronic configurations that were introduced by oxygen vacancy in rutile TiO2 crystal have been studied by the DFT + U method. It is found that the building block of TiO6 will expand when extra electron is trapped in the central Ti atom as polaron. With manually adjusting the initial geometry of oxygen vacancy structure, a variety of polaronic configurations are obtained after variable-cell relaxation. By calculating different sizes of supercell model, it is found that the most stable configuration can be influenced by the density of oxygen vacancy. With increasing interaction between vacanci

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13

Toman, Petr, Stanislav Nešpůrek, and Kyuya Yakushi. "Electronic states and infrared spectroscopy of Ni- and Co-phthalocyanines: neutral and oxidized forms." Journal of Porphyrins and Phthalocyanines 06, no. 09 (2002): 556–62. http://dx.doi.org/10.1142/s1088424602000695.

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Quantum chemical calculations reproduced the experimental infrared spectra of NiPc , NiPc ( AsF 6)0.5, CoPc , and CoPc ( AsF 6)0.5. The agreement in the changes of line intensities supports the ligand-centered oxidation in both NiPc ( AsF 6)0.5 and CoPc ( AsF 6)0.5. Whereas, electron configurations of NiPc and NiPc + as well as CoPc represent standard cases, i.e. they can be taken as a closed-shell and open-shell system, respectively, the electron configuration of CoPc + must be taken as an open-shell system (while the number of electrons is even) to get an agreement of theoretical and experim

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14

ROTONDO, MICHAEL, JORGE A. RUEDA, REMO RUFFINI, and SHE-SHENG XUE. "ON DEGENERATE COMPRESSED ATOMS AND COMPRESSED NUCLEAR MATTER CORES OF STELLAR DIMENSIONS." International Journal of Modern Physics: Conference Series 12 (January 2012): 203–12. http://dx.doi.org/10.1142/s2010194512006393.

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The relativistic generalization of the Feynman, Metropolis and Teller treatment of compressed atoms is obtained. Each atomic configuration is confined by a Wigner-Seitz cell and is characterized by a positive electron Fermi energy. There exists a limiting configuration, reached when the Wigner-Seitz cell radius equals the radius of the nucleus, with a maximum value of the electron Fermi energy [Formula: see text], here expressed analytically in the ultra-relativistic approximation. The treatment is then extrapolated to compressed nuclear matter cores of stellar dimensions with A ≃ (m Planck /m

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15

Malker, Pooja, and Lalita Sharma. "Electron Impact Excitation of Ge-like Te20+–Cd16+ Ions." Atoms 10, no. 1 (2022): 17. http://dx.doi.org/10.3390/atoms10010017.

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We study electron impact excitation of dipole allowed transitions in the extreme ultraviolet range—8–55 nm—for the germanium isoelectronic sequence Te20+–Cd16+. The fine structure transitions between the ground state having configuration 4s24p2 and the excited states with configurations 4s4p3 and 4s24p4d are considered for these ions. We employ the relativistic distorted wave method to calculate the excitation cross sections in the incident electron energy range from the excitation threshold to 5000 eV. To obtain the required ionic bound state wavefunctions we have used the multi-configuration

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16

Kanazawa, I. "The Electron Localization in the Quasicrystal-Like System." Modern Physics Letters B 17, no. 15 (2003): 841–45. http://dx.doi.org/10.1142/s0217984903005834.

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By using the thermal Green's function technique, we consider the transport properties in a randomly distributed system of the aggregation that corresponds to the correlated unit-cell configurations, in which the nearest distance between each configuration is ~ 2π/2k F . We introduce the temperature dependence of the conductivity of the quasicrystal-like system.

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17

Garofalo, Anthony. "Housing Electrons: Relating Quantum Numbers, Energy Levels, and Electron Configuration." Journal of Chemical Education 74, no. 6 (1997): 709. http://dx.doi.org/10.1021/ed074p709.

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18

Prendergast, David, M. Nolan, Claudia Filippi, Stephen Fahy, and J. C. Greer. "Impact of electron–electron cusp on configuration interaction energies." Journal of Chemical Physics 115, no. 4 (2001): 1626–34. http://dx.doi.org/10.1063/1.1383585.

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19

Makarenko, L. F., S. B. Lastovskii, E. Gaubas, et al. "INJECTION ANNEALING OF THE SELF DI-INTERSTITIAL – OXYGEN COMPLEX IN p-TYPE SILICON." Proceedings of the National Academy of Sciences of Belarus. Physics and Mathematics Series 54, no. 2 (2018): 220–28. http://dx.doi.org/10.29235/1561-2430-2018-54-2-220-228.

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With the use of deep level transient spectroscopy (DLTS) the effect of injection of minority charge carriers (electrons) on an annealing rate of self di-interstitial – oxygen (I2O) complex in silicon has been studied. The complex has been formed by irradiation of epitaxial boron-doped n+–p diode structures with alpha-particles at room temperature. It has been shown that the disappearance of this complex at room temperature begins at a direct current density of ~1.5 A/cm2. This characteristic current density has been found for 10 W·cm p-type silicon when the total radiation defect density was l

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20

Liang, W. Y. "A Model for Correlated Valence Fluctuation in High Tc Superconductors." International Journal of Modern Physics B 01, no. 03n04 (1987): 1049–55. http://dx.doi.org/10.1142/s0217979287001547.

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A simple model is proposed as a possible mechanism for high T c superconductivity in certain copper oxides based on correlated valence fluctuation. Electron pairs are formed by Coulomb attraction between electrons in mainly Cu2+ ( d 9 configuration) pyramidal planes mediated by Cu 3+ ( d 8 configuration) ions in the CuO 4 chain-like plane in YBa2Cu3O7−x . These electron pairs have high binding energies necessary for high Tc , and the model is capable of explaining a number of other observed properties.

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21

Hansen, S. B. "Configuration interaction in statistically complete hybrid-structure atomic models1This article is part of a Special Issue on the 10th International Colloquium on Atomic Spectra and Oscillator Strengths for Astrophysical and Laboratory Plasmas." Canadian Journal of Physics 89, no. 5 (2011): 633–38. http://dx.doi.org/10.1139/p11-006.

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Configuration interaction can have significant effects on the transition energies and strengths of diagnostically important X-ray emission lines and features. However, including full configuration interaction (CI) effects by computing extensive collections of fine structure (LS term) levels may be computationally prohibitive for complex ions. In this paper, we show that CI effects in a simple ion vary little with the configuration of spectator electrons, and that CI effects in complex ions are fairly consistent from one ionization stage to the next, particularly for highly charged ions. Theref

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22

Sen, K. D., P. C. Schmidt та Alarich Weiss. "Sternheimer Antishielding Functions ß(r) and γ(r) for Rare Earth Atoms". Zeitschrift für Naturforschung A 41, № 1-2 (1986): 37–46. http://dx.doi.org/10.1515/zna-1986-1-208.

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The Sternheimer shielding-antishielding functions ß(r) and γ(r) are reported for all the fourteen lanthanide atoms at the uncoupled Hartree-Fock level of theory. Each atom is considered in two valence state configurations, 4fn 5d0 and 4 fn-1 5d1, and the nonrelativistic HF wave functions have been used. The 5d1 configuration leads to a smaller net antishielding than the 4fn configuration by ~ 6-12% in the series. The electron-electron self consistency effects are found to be less than 5% in the series. The importance of the calculated antishielding functions in the antishielding theory of elec

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23

Harcourt, Richard D. "Increased Valence or Electronic Hypervalence for Symmetrical Three-Centre Molecular Orbital Configurations." Australian Journal of Chemistry 60, no. 9 (2007): 691. http://dx.doi.org/10.1071/ch07189.

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With ψ1 = y + k1a + b, ψ2 = y – b, and ψ3 = y – k3a + b as Y–A and A–B bonding, non-bonding, and antibonding three-centre molecular orbitals for a symmetrical Y–A–B type bonding unit with overlapping atomic orbitals y, a, and b, it is deduced that the maximum value for the A atom valence, (VA = Vab + Vay), is (a) 4(3 – 2√2) = 0.6863 for the one-electron and five-electron configurations Φ(1) = (ψ1)1 and Φ(5) = (ψ1)2ψ2)2(ψ3)1; (b) 8(3 – 2√2) = 1.3726 for the two-electron and four-electron configurations Φ(2) = (ψ1)2 and Φ(4) = (ψ1)2(ψ2)2; and (c) 4/3 for the three-electron configuration Φ(3) = (

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24

Bianconi, A., A. Clozza, A. Congiu Castellano, et al. "EXPERIMENTAL EVIDENCE OF ITINERANT Cu 3d9 - OXYGEN HOLE MANY BODY CONFIGURATION IN THE HIGH-TC SUPERCONDUCTOR YBa2Cu3O~7." International Journal of Modern Physics B 01, no. 03n04 (1987): 853–62. http://dx.doi.org/10.1142/s0217979287001213.

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Cu L3 x-ray absorption near edge structure (XANES) and Cu L 3 x-ray photoelectron spectroscopy (XPS) of YBa2Cu3O6.5+x are compared. The breakdown of one-electron picture of its electronic structure is reported. The data are interpreted by mixing of Cu 3d9 and of [Formula: see text] (where [Formula: see text] is a hole in the oxygen derived band, ligand hole) many body configuration in the initial state. The localization of Cu 3d9 configuration is indicated by the bare Coulomb interaction Udd~6 eV . The conductivity is assigned to the itinerant [Formula: see text] configuration. The experimenta

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25

Xu, Min, Gang Jiang, Miao Wu, Xiangfu Li, Guojie Bian, and Feng Hu. "Multiconfiguration Dirac–Fock calculations of excitation energies and wavelengths in highly charged tungsten ions." Canadian Journal of Physics 94, no. 6 (2016): 563–68. http://dx.doi.org/10.1139/cjp-2015-0772.

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The fully relativistic multiconfiguration Dirac–Fock (MCDF) method is employed to calculate the excitation energies and wavelengths for nine isoelectronic sequences of tungsten ions. In calculations, electron correlations, quantum electrodynamical (QED) effect, and Breit correction are taken into account. The core–valence and valence–valence corrections are analyzed in a systematic way. The core setting was systematically studied for four cases of one electron occupying the outermost s orbital, one electron occupying the outermost p orbital, three electrons occupying the outermost p orbital, a

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26

Ruterana, P., A. Béré, and G. Nouet. "Formation and stability of the prismatic stacking faultin wurtzite (Al,Ga,In) nitrides." MRS Internet Journal of Nitride Semiconductor Research 5, S1 (2000): 266–72. http://dx.doi.org/10.1557/s1092578300004373.

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The formation of the {1 10} stacking fault, which has two atomic configurations in wurtzite (Ga,Al,In)N, has been investigated by high resolution electron microscopy and energetic calculations. It originates from steps at the SiC surface and it can form on a flat (0001) sapphire surface. A modified Stillinger-Weber potential was used in order to investigate the relative stability of the two atomic configurations. They have comparable energy in AlN, whereas the 1/2<10 1>{1 10} configuration is more stable in GaN and InN. In GaN layers, only the 1/2<10 1>{1 10} configuration was obse

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27

Nitescu, Andrei, Cristina Besleaga, George Alexandru Nemnes, and Ioana Pintilie. "Bistable Boron-Related Defect Associated with the Acceptor Removal Process in Irradiated p-Type Silicon—Electronic Properties of Configurational Transformations." Sensors 23, no. 12 (2023): 5725. http://dx.doi.org/10.3390/s23125725.

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The acceptor removal process is the most detrimental effect encountered in irradiated boron-doped silicon. This process is caused by a radiation-induced boron-containing donor (BCD) defect with bistable properties that are reflected in the electrical measurements performed in usual ambient laboratory conditions. In this work, the electronic properties of the BCD defect in its two different configurations (A and B) and the kinetics behind transformations are determined from the variations in the capacitance-voltage characteristics in the 243–308 K temperature range. The changes in the depletion

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28

Peysson, Y., and J. Decker. "Fast electron bremsstrahlung in axisymmetric magnetic configuration." Physics of Plasmas 15, no. 9 (2008): 092509. http://dx.doi.org/10.1063/1.2981391.

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29

Grenda, Stanley C. "A simple mnemonic device for electron configuration." Journal of Chemical Education 65, no. 8 (1988): 697. http://dx.doi.org/10.1021/ed065p697.

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30

Bang, Jens N., and Henrik Georg Bohr. "Current functional theory for multi-electron configuration." Theoretical Chemistry Accounts 125, no. 3-6 (2009): 555–68. http://dx.doi.org/10.1007/s00214-009-0640-y.

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31

Eliav, Ephraim, Uzi Kaldor, Peter Schwerdtfeger, Bernd A. Hess, and Yasuyuki Ishikawa. "Ground State Electron Configuration of Element 111." Physical Review Letters 73, no. 24 (1994): 3203–6. http://dx.doi.org/10.1103/physrevlett.73.3203.

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Nest, M. "The multi-configuration electron–nuclear dynamics method." Chemical Physics Letters 472, no. 4-6 (2009): 171–74. http://dx.doi.org/10.1016/j.cplett.2009.03.013.

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33

UNNIKRISHNAN, C. S., and C. P. SAFVAN. "EXPERIMENTAL TEST OF A QUANTUM-LIKE THEORY: MOTION OF ELECTRONS IN A UNIFORM MAGNETIC FIELD, IN A VARIABLE POTENTIAL WELL." Modern Physics Letters A 14, no. 07 (1999): 479–90. http://dx.doi.org/10.1142/s0217732399000535.

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We describe an experiment to test a quantum-like theory which predicts quantum-like behavior for an ensemble of electrons in a classical configuration with static magnetic and electric fields. Some of the earlier experiments had supporting evidence for anomalous, quantum-like effects in such a situation showing systematic modulations of electron current when a retarding potential is varied, even though the quantum wavelength of the electrons in such a configuration was less than a billionth of the spatial width of the potential well. Our experiment conclusively rules out any nonclassical, quan

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Roth, Ilan. "Energetic Solar Electrons – Whistler Bootstrap, Magnetic Knots and Small-scale Reconnection." Proceedings of the International Astronomical Union 6, S274 (2010): 178–81. http://dx.doi.org/10.1017/s1743921311006879.

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AbstractThe (near) relativistic electrons, emanating from the solar corona in long-lasting, gradual events, are generally observed at 1 AU as delayed vs the less energetic, type-III beams. The observations are consistent with the delayed electrons being energized along the stretched post-CME coronal field lines, when the tail of an anisotropic seed population, which is injected in conjunction to the observed radioheliograph bursts, interacts with the self-excited whistler waves (bootstrap mechanism). These bursts indicate efficient processes where suprathermal seed electrons are injected as a

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Jonauskas, Valdas. "Electron-impact single ionization of Si+." Astronomy & Astrophysics 642 (October 2020): A185. http://dx.doi.org/10.1051/0004-6361/202038266.

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Electron-impact single ionization is studied in the Si+ ion by considering transitions among energy levels. The study includes excitation-autoionization (EA) and collisional ionization processes. The excitations are investigated up to shells with the principal quantum numbers n ≤ 10. It is shown that correlation effects included in the EA calculations play a crucial role in explaining measurements. The correlation effects diminish the EA cross sections by ∼30% compared to single-configuration calculations. However, the collisional ionization is not significantly affected by an extension of the

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CHEN, KE-QIU, BEN-YUAN GU, YU-KAE LIN, and D. S. CHUU. "TRANSMISSION PROPERTIES OF ELECTRONS IN A T-TYPE OPENED QUANTUM WAVEGUIDE WITH INHOMOGENEOUS MAGNETIC FIELDS." International Journal of Modern Physics B 13, no. 08 (1999): 903–15. http://dx.doi.org/10.1142/s0217979299000758.

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We calculate the quantum-mechanical transmission of electrons in a T-shaped opened quantum waveguide (TOQW) subjected to an inhomogeneous magnetic field perpendicular to the TOQW plane with the use of the mode-matching technique. An electron incident through one branch of the waveguide can travel into the other two channels in the quantum ballistic regime. We find that transmission coefficients in two channels exhibit quite difference from each other and depend sensitively on geometric parameters and magnetic configurations. Sharp peaks with unity amplitude and deep dips are observed in transm

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Epping, Brian, Michael Rapp, Devin Barry, et al. "Measurement of Photoneutron Yields Using the RPI LINAC and Assessment of Evaluated Photoneutron Data for Tantalum and Beryllium." EPJ Web of Conferences 284 (2023): 01019. http://dx.doi.org/10.1051/epjconf/202328401019.

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A new experiment configuration was designed, developed, and implemented to measure photoneutron yields using the Rensselaer Polytechnic Institute (RPI) electron linear accelerator (LINAC) at the RPI Gaerttner LINAC Center. The experiment configuration includes a new target assembly that converts the LINAC electron beam into a high energy bremsstrahlung photon flux incident upon a sample material of interest. The photons excite nuclei in the sample of interest, which can subsequently emit neutrons (photoneutrons). The photoneutrons emitted in the direction of the detector system travel through

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Abdul kader A. Hassan, Fareed M. Mohammed, Sameh H. Salih, and Shalash A. Mohammed. "A study of electron momentum density in Ti_Al system." Tikrit Journal of Pure Science 23, no. 4 (2018): 96–101. http://dx.doi.org/10.25130/tjps.v23i4.529.

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We present the electron momentum densities of TiAl , Ti3Al and TiAl3 alloys in terms of Compton profile. Compton profiles (CP) of Ti and Al metals were calculated by adopting the renormalized free atom (RFA) and free electron models and choosing (3d3 – 4s1) configuration to Ti and (3s2 – 3p1) to Al as best electron configurations. The Compton profiles values were obtained by the Superposition model for the three intermetallic alloys. The theoretical results were compared with the experimental values. The present work results of TiAl , Ti3Al and TiAl3 alloys are in good agreement with the exper

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Kirschbaum, Rolf W., Markus Hausmann, Olga V. Boltalina, Steven H. Strauss, and Thomas Drewello. "Energy-dependent gas-phase fragmentation of fluorofullerene multiply charged anions (MCAs)." Physical Chemistry Chemical Physics 17, no. 35 (2015): 23052–58. http://dx.doi.org/10.1039/c5cp03112e.

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The fragmentation behavior of fluorofullerene di- and trianions is governed by their electronic stability. Ions with the less stable odd-electron configuration dissociate into species with the more stable even-electron configuration.

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MAKSYM, PETER A., RYOTARO ARITA, and HIDEO AOKI. "SPIN CONFIGURATION IN THE ELECTRON MOLECULE IN FEW-ELECTRON QUANTUM DOTS IN STRONG MAGNETIC FIELDS — SUPERPOSITION OF MULTIPLE CONFIGURATIONS." International Journal of Modern Physics B 21, no. 08n09 (2007): 1643–48. http://dx.doi.org/10.1142/s021797920704335x.

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Electron correlation in molecular quantum dot states is examined with an exact dot model and a Hubbard model. The orbital and spin angular momentum of a 5-electron dot in the ν < 1 regime are consistent with the occurrence of a superposition 4- and 5-fold configurations. Hubbard model correlation functions are calculated for these configurations. Spin summed pair correlation functions agree well with the exact results but there are differences in the spin resolved functions.

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Kynienė, Aušra, Sigitas Kučas, Šarūnas Masys, and Valdas Jonauskas. "Electron-impact ionization of Fe8+." Astronomy & Astrophysics 624 (April 2019): A14. http://dx.doi.org/10.1051/0004-6361/201833762.

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Electron-impact ionization cross sections and Maxwellian rate coefficients are presented for the Fe8+ion by considering processes from the ground and metastable levels. The lifetimes of the levels for the 3s23p53d configuration were analysed using the extended basis of interacting configurations. Convergence of the cross sections for the indirect process due to excitations to the high-nlsubshells was investigated. We demonstrate that excitations to the subshells with orbital quantum numberl = 3 with subsequent autoionization dominate up to electron energies of ∼700 eV for the ground and metast

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Shindo, Daisuke, Shinji Aizawa, Zentaro Akase, Toshiaki Tanigaki, Yasukazu Murakami, and Hyun Soon Park. "Electron Holographic Visualization of Collective Motion of Electrons Through Electric Field Variation." Microscopy and Microanalysis 20, no. 4 (2014): 1015–21. http://dx.doi.org/10.1017/s1431927614000786.

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AbstractThis study demonstrates the accumulation of electron-induced secondary electrons by utilizing a simple geometrical configuration of two branches of a charged insulating biomaterial. The collective motion of these secondary electrons between the branches has been visualized by analyzing the reconstructed amplitude images obtained using in situ electron holography. In order to understand the collective motion of secondary electrons, the trajectories of these electrons around the branches have also been simulated by taking into account the electric field around the charged branches on the

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Dorward, D. W. "A Low Cost Configuration for Internetwork Telemicroscopy." Microscopy and Microanalysis 6, S2 (2000): 1146–47. http://dx.doi.org/10.1017/s1431927600038228.

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Advances in internetwork data transmission rates and reductions in the cost of imaging components and applications have facilitated real-time sharing of video, still images, and microscope operating systems with collaborators or observers at remote locations. Specialized direct and web-based systems for transmission electron microscopy have been described previously. However, in order to develop a generic and flexible means of sharing live images and data from light, scanning electron, and transmission electron microscope instruments, a telemicroscopy system was configured using readily availa

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44

He, R. J., Z. Wang, H. S. Fu, J. B. Cao, Y. Y. Liu, and Z. Z. Guo. "Characteristics of Electron Pitch-angle Distribution in the Flapping Magnetotail." Astrophysical Journal 940, no. 2 (2022): 99. http://dx.doi.org/10.3847/1538-4357/ac9669.

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Abstract The configuration, local motions, and related physics processes of the terrestrial magnetotail have been well studied, playing a key role in magnetotail dynamics. But characteristics of electron pitch-angle distribution (PAD), and the formation mechanisms, at different regions in the flapping magnetotail were not pointed out. Here, we study a current sheet crossing event detected by the Magnetospheric Multiscale Mission inside a magnetotail, and investigate the electron PAD of the event in detail. When the spacecraft are out of the current sheet, low-energy and high-energy electrons p

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Chen, Junhong. "Approximate Methods for Calculating Ground-State Energy in Helium Atom." Highlights in Science, Engineering and Technology 141 (May 23, 2025): 59–65. https://doi.org/10.54097/y8y88h27.

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In this paper, several main approximate methods are discussed, including variational principle, Hartree-Fock method, configuration interaction method, quantum Monte Carlo method and parametric perturbation method. These methods solve the complexity of electron-electron correlation and interaction from different angles, and each has its advantages and disadvantages. The variational principle estimates the upper limit of ground state energy by testing the wave function, which effectively captures the electron correlation. Hartree-Fock method uses the mean field approximation to simplify the calc

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Heo, Jiyoung. "Calculation of Vertical Detachment Energies for Bromochlorobenzene Dimer Anions: Dependence of Substitution Position^#." Bulletin of the Korean Chemical Society 36, no. 3 (2015): 925–29. http://dx.doi.org/10.1002/bkcs.10173.

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The structure and energetics of neutral and anionic dimer configurations for three bromochlorobenzene (BCB) isomers were investigated with the quantum mechanical calculations on the level of M06‐2X/6‐311++G(d, p). The neutral dimers within 5 kcal/mol of the relative energy had the parallel‐displaced configurations for all isomers. The structures of dimer anions were obtained from these low‐energy neutral configurations, and four, two, and one configurations (relative energy < 5 kcal/mol) were found in o‐BCB, m‐BCB, and p‐BCB dimer anions, respectively. The electron was attached mainly to on

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47

Hanurjaya, Stephanus, Miftahul Anwar, Meiyanto Eko Sulistyo, Irwan Iftadi, and Subuh Pramono. "Analysis of Triple Quantum Dots Single Electron Transistor (TQD-SET) for Various Configuration." Journal of Electrical, Electronic, Information, and Communication Technology 2, no. 2 (2020): 56. http://dx.doi.org/10.20961/jeeict.2.2.44840.

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<p class="Abstract">Single electron transistor (SET) has high potential for the development of quantum computing technologies in order to provide low power consumption electronics. For that purpose, many studies have been conducted to develop SET using dopants as quantum dots (QD). The working principle of SET basically is a single electron tunneling one by one through tunnel junction based on the coulomb blockade effect. This research will simulate various configurations of triple quantum dots single electron transistors (TQD-SET) using SIMON 2.0 with an experimental approach of MOSFET

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Angadi, Gangadhar, Hebbale NarayanaRao Narasimha Murthy, Sridhar Ramakrishna, Salim Firdosh, Raghavendra Nagappa, and Krishna Munishamaiah. "Effect of screw configuration on the dispersion of nanofillers in thermoset polymers." Journal of Polymer Engineering 37, no. 8 (2017): 815–25. http://dx.doi.org/10.1515/polyeng-2015-0427.

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Abstract This paper deals with the study of screw configuration for dispersing nanofillers in thermoset polymers using an intermesh co-rotating twin screw extruder. The influence of kneading elements on the dispersion of nanoclay in epoxy was examined using 10 different screw configurations. Nanoclay was dispersed in epoxy at a barrel temperature of 5°C and a screw speed of 100 rpm. The combination of right hand kneading block and three/four lobed kneading blocks resulted in uniform dispersion of nanofiller. Positive staggered angle with right hand kneading elements yielded uniform dispersion

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Et. al., G. E. Adesakin ,. "Vibrational Internal Energy And Helmholtz Free Energy Of Metals." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 10 (2021): 7638–48. http://dx.doi.org/10.17762/turcomat.v12i10.5673.

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This article revealed an interesting issue on vibrational internal energy and Helmholtz free energy of metals. The relationship existing between the lateral strain and axial strain was taking into consideration during computation. Vibrational internal energy and Helmholtz free energy of metals was computed and studied based on the theory of free electron approximation using the knowledge of thermodynamic potentials. Computed and theoretically obtained experimental valueof vibrational internal energy and Helmholtz free energy of metals agreed quite well with each other.Vibrational internal ener

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Hembree, Gary G., Frank C. H. Luo, and John A. Venables. "Auger electron spectroscopy and microscopy in STEM." Proceedings, annual meeting, Electron Microscopy Society of America 49 (August 1991): 464–65. http://dx.doi.org/10.1017/s0424820100086623.

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Spatial resolution in Auger electron spectroscopy (AES) is primarily a function of the excitation beam current distribution. For highest resolution the question of how to produce such a small probe of electrons is coupled with how to extract the secondary electrons efficiently from the sample. Kniit and Venables have shown the optimum configuration for highest resolution AES is a combination of a magnetic immersion lens, additional solenoids (“parallelizers“) to shape the weak magnetic field in the low energy electron transport region and a concentric hemispherical analyzer (CHA) to disperse a

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