Parallel Discrete Ordinates Methods in the CEPTRE Project
Abstract not provided.
Publications
Manufactured solution verification of the Ceptre code
Abstract not provided.
Coupled Electron-Photon Transport with the Ceptre Code
Abstract not provided.
An overview of ASC efforts in parallel first-order Sn methods
Abstract not provided.
An overview of ASC efforts in parallel first-order Sn methods
Abstract not provided.
Application of the Ceptre Code to Cable SGEMP Problems
Abstract not provided.
Application of the CEPTRE Code to Cable SGEMP Problems
Abstract not provided.
Investigation of domain size in polymer membranes using double quantum filtered spin diffusion MAS NMR
Proposed for publication in Macromolecules.
Solid-state {sup 1}H magic angle spinning (MAS) NMR was used to investigate sulfonated Diels-Alder poly(phenlylene) polymer membranes. Under high spinning speed {sup 1}H MAS conditions, the proton environments of the sulfonic acid and phenylene polymer backbone are resolved. A double-quantum (DQ) filter using the rotor-synchronized back-to-back (BABA) NMR multiple-pulse sequence allowed the selective suppression of the sulfonic proton environment in the {sup 1}H MAS NMR spectra. This DQ filter in conjunction with a spin diffusion NMR experiment was then used to measure the domain size of the sulfonic acid component within the membrane. In addition, the temperature dependence of the sulfonic acid spin-spin relaxation time (T{sub 2}) was determined, providing an estimate of the activation energy for the proton dynamics of the dehydrated membrane.
Overview of CEPTRE and applications to cable SGEMP simulations (U)
Abstract not provided.
Overview of CEPTRE and applications to cable SGEMP simulations
Abstract not provided.
Past and current discrete ordinates efforts at Sandia
Abstract not provided.
Results 76–86 of 86