skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: BES: Artificial Hubbard Materials.

Abstract

Abstract not provided.

Authors:
Publication Date:
Research Org.:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org.:
Work for Others (WFO)
OSTI Identifier:
1397108
Report Number(s):
SAND2016-9594PE
647750
DOE Contract Number:
AC04-94AL85000
Resource Type:
Conference
Resource Relation:
Conference: Proposed for presentation at the BES program review held September 26, 2016.
Country of Publication:
United States
Language:
English

Citation Formats

Misra, Shashank. BES: Artificial Hubbard Materials.. United States: N. p., 2016. Web.
Misra, Shashank. BES: Artificial Hubbard Materials.. United States.
Misra, Shashank. Thu . "BES: Artificial Hubbard Materials.". United States. doi:. https://www.osti.gov/servlets/purl/1397108.
@article{osti_1397108,
title = {BES: Artificial Hubbard Materials.},
author = {Misra, Shashank},
abstractNote = {Abstract not provided.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Thu Sep 01 00:00:00 EDT 2016},
month = {Thu Sep 01 00:00:00 EDT 2016}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share:
  • Abstract not provided.
  • We describe theoretical modeling of both pure (MX) and mixed-halide (MX{sub x}X{prime}{sub 1-x}) halogen (X)-bridged transition metal (M) linear chain complexes in terms of an extended Peierls-Hubbard, tight-binding Hamiltonian with 3/4-filling of two-bands. Both inter- and intra-site electron-phonon coupling are included. Electronic (optical absorption), lattice dynamic (IR, Raman) and spin (ESR) signatures are obtained for the ground states, localized excited states produced by impurities, doping or photo-excitation -- excitons, polarons, bipolarons, solitons; and the edge states (which occur in mixed-halide crystals, e.g. PtCl{sub x}Br{sub 1-x}). Adiabatic molecular dynamics is used to explore photodecay channels in pure and impure systems formore » ground states as well as in the presence of pre-existing polaronic states. 12 refs., 3 figs., 1 tab.« less
  • Over the years a number of techniques have been developed to determine the quantity and distribution of radiative isotopes contained in given assay samples through the measurement and analysis of penetrating characteristic radiations. An active technique of particular utility when assaying samples containing very small quantities of fissionable material or when high gamma ray backgrounds are encountered is the delayed neutron nondestructive assay (DN-NDA) technique. Typically, analysis of the delayed neutron signal involves relating the gross delayed neutron count observed following neutron irradiation of an assay sample to total fissionable material present via a linear calibration curve. In this way,more » the technique is capable of yielding the mass of a single dominant fissionable isotope or the total fissionable mass contained in a sample. Using this approach the only way to determine the mass of individual fissionable isotopes contained in a sample is to correlate total fissionable mass to individual isotopics via calculations or other means, yielding an indirect measure of isotopics. However, there is isotope specific information in the temporal delayed neutron signal due to differences in the delayed neutron precursor yields resulting from the fissioning of different isotopes. The authors present the results of an analysis to evaluate the feasibility of using Kalman filters and genetic algorithms to determine multiple specific fissionable isotopic masses contained in an assay sample from a cumulative delayed neutron signal measured following neutron irradiation of the sample.« less
  • Problems associated with the handling, packaging, and storage of radioactive materials are listed and discussed. Rules handed down by the AEC and ICC are given. (P.C.H.)
  • Study on [ital J]/[psi][r arrow][phi][ital f][sub 0](975) gives its branching ratio, the helicity amplitude ratio, and the mass and width of [ital f][sub 0](975). For [xi](2.2), the mass, width, and branching ratio were measured in [ital J]/[psi][r arrow][gamma][ital K][sup +][ital K][sup [minus]],[gamma][ital K][sup 0][sub [ital s]][ital K0][sub [ital s]], and [gamma][eta][eta].