Results 31 to 40 of about 67,162 (295)

The influence of hyperfine structure on some manganese line profiles in the solar spectrum [PDF]

Serbian Astronomical Journal, 2003
Taking into account effects of hyperfine structure, we calculated the synthetic solar spectrum for wavelength intervals around nine neutral manganese lines.
Vitas Nikola D., Vince Ištvan I.
doaj   +1 more source

Distribution of Oscillator Strengths for Recombination of Localised Excitons in Two Dimensions

, 1996
We investigate the distribution of oscillator strengths for the recombination of excitons in a two dimensional sample, trapped in local minima of the confinement potential: the results are derived from a statistical topographic model of the potential ...
Abramowitz, Cox, Dingle, Fang Yang, Gammon, Gammon, Göbel, Hegarty, Hegarty, Kaumba Chinyama, Knox, Longuet-Higgins, Michael Wilkinson, O'Donnell, Paul N. Walker, Rice, Singh, Stanley, Weisbuch, Wilkinson   +19 more
core   +1 more source

Trapping of Electrons around Nanoscale Metallic Wires Embedded in a Semiconductor Medium

Electronic Materials, 2021
We predict that conduction electrons in a semiconductor film containing a centered square array of metal nanowires normal to its plane are bound in quantum states around the central wires, if a positive bias voltage is applied between the wires at the ...
Chi Cuong Huynh, Roger Evrard, Ngoc Duy Nguyen   +2 more
doaj   +1 more source

Optical properties of the vibrations in charged C$_{60}$ molecules

, 1995
The transition strengths for the four infrared-active vibrations of charged C$_{60}$ molecules are evaluated in self-consistent density functional theory using the local density approximation.
Arthur P. Smith, B. Chase, B. Friedman, B. Friedman, D. Weeks, G. F. Bertsch, George F. Bertsch, J. Perdew, J. Wiggs, K.-J. Fu, M. C. Martin, M. J. Rice, M.C. Payne, N. Troullier, R. Car, T. Pichler, W. Kohn   +16 more
core   +1 more source

Modulating Two‐Photon Absorption in a Pyrene‐Based MOF Series: An In‐Depth Investigation of Structure–Property Relationships

Advanced Functional Materials, EarlyView.
This study investigates H4TBAPy‐based metal–organic frameworks (MOFs) ‐ NU‐1000, NU‐901, SrTBAPy, and BaTBAPy ‐ for multiphoton absorption (MPA) performance. It observes topology‐dependent variations in the 2PA cross‐section, with BaTBAPy exhibiting the highest activity.
Simon N. Deger, Helmy Pacheco Hernandez, Yang Cui, Hongxing Hao, Vanessa Ramm, David C. Mayer, Khai‐Nghi Truong, Roland A. Fischer, Jürgen Hauer, Mariana Kozlowska, Alexander Pöthig   +10 more
wiley   +1 more source

Transition Probabilities, Oscillator and Line Strengths in Sc XIX

East European Journal of Physics
Scandium XIX ion is a member of the isoelectronic sequence of Li-like ions. Numerical coulomb approximation and quantum defect theory have been used to calculate energies, quantum defects & transition probabilities, oscillator, and line strengths of Sc ...
Zaheer Uddin, Muhammad Kaleem, Saba Javaid, Roohi Zafar   +3 more
doaj   +1 more source

Radiative Transition Parameters in Atomic Lanthanum from Pseudo-Relativistic Hartree–Fock and Fully Relativistic Dirac–Hartree–Fock Calculations

Atoms, 2019
Calculated radiative transition probabilities and oscillator strengths are reported for 392 lines of neutral lanthanum (La I) atom in the spectral range from the near ultraviolet to the mid infrared.
Sébastien Gamrath, Patrick Palmeri, Pascal Quinet   +2 more
doaj   +1 more source

Band Alignment in In‐Oxo Metal Porphyrin SURMOF Heterojunctions

Advanced Functional Materials, EarlyView.
Porphyrin core metalation in indium‑oxo SURMOFs enables systematic tuning of band edge positions without altering the crystal structure. First‑principles calculations reveal type‑I and type‑II heterostructures as well as multi‑junction energy cascades, establishing a modular strategy for exciton funneling and charge separation in optoelectronic ...
Puja Singhvi, Nina Vankova, Thomas Heine
wiley   +1 more source

Analysis of Polarizability Measurements Made with Atom Interferometry

Atoms, 2016
We present revised measurements of the static electric dipole polarizabilities of K, Rb, and Cs based on atom interferometer experiments presented in [Phys. Rev. A 2015, 92, 052513] but now re-analyzed with new calibrations for the magnitude and geometry
Maxwell D. Gregoire, Nathan Brooks, Raisa Trubko, Alexander D. Cronin   +3 more
doaj   +1 more source

GENERALIZED OSCILLATOR STRENGTH DENSITY

Acta Physica Sinica, 1984
The total cross section and differential cross section of high-energy electron impact excitation can be calculated with Born approximation. The differential cross section is proportional to the so called generalized oscillator strength. The target atom or ion may be excited to infinite bound states, auto-ionizing states and adjoint continuum states ...
null TIAN BO-GANG, null LI JIA-MING
openaire   +1 more source