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Kinetics of H atom attack on unsaturated hydrocarbons using spectral uncertainty propagation and minimization techniques

July 2, 2012

Author(s)

David A. Sheen, Claudette M. Rosado-Reyes, Wing Tsang

Unsaturated hydrocarbons are an important component of hydrocarbon fuels and intermediates in their oxidation. Under rich conditions, H atom attack is one of the principle pathways of the decomposition of these unsaturated compounds. Consequently, it is

State-of-the-Art Comparability of Corrected Emission Spectra-Part II: Peer-toPeer Assessment of Calibration Performance Using Spectral Fluorescence Standards

February 28, 2012

Author(s)

Paul C. DeRose, Joanne C. Zwinkels, Bernd Ebert

The tremendous growth of fluorescence applications in the life and material sciences has proceeded largely without sufficient concern for the reliability and uncertainties related to the characterization and performance validation of fluorescence

Observation of vapor density enhancement of a rare-earth metal-halide in the temperature range relevant to metal-halide lamps

February 22, 2012

Author(s)

John J. Curry, E. G. Estupinan, W. P. Lapatovich, Albert Henins, S. D. Shastri

The total vapor-phase densities of Dy in equilibrium with a DyI$_3$/InI condensate and Tm in equilibrium with a TmI$_3$/TlI condensate have been measured for temperatures between 900 K and 1400 K. The measurements show strong enhancements in rare-earth

Pressure Dependence and Branching Ratios in the Decomposition of 1-Pentyl Radicals: Shock Tube Experiments and Master Equation Modeling

February 22, 2012

Author(s)

Iftikhar A. Awan, Donald R. Burgess Jr., Jeffrey A. Manion

The decomposition and intramolecular H-transfer isomerization reactions of the 1 pentyl radical have been studied at temperatures of 900 K to 1050 K and pressures of 0.8 bar to 6 bar using the single pulse shock tube technique and additionally investigated

Refrigeration of separate, user-supplied payloads with Normal-Insulator-Superconductor tunnel junctions

January 24, 2012

Author(s)

Peter J. Lowell, Galen C. O'Neil, Jason M. Underwood, Joel N. Ullom

Normal metal - Insulator - Superconductor (NIS) tunnel junctions can be used to selectively remove the hottest elec- trons in the normal metal, thereby causing it to cool. NIS tunnel junctions have already been used to cool lithograph- ically integrated

Predictive Gold Nanocluster Formation Controlled by Metal-Ligand Complexes

January 9, 2012

Author(s)

John M. Pettibone, Jeffrey W. Hudgens

The formation of ligand-protected transition metal nanoclusters in size-selective syntheses is driven by the inherent properties of the protecting ligands. We have previously reported the selective, monodisperse product formation of phosphine protected Au

Ab initio Calculations and RRKM/Master Equation Modeling of Chloroalkanes ? Alkenes + HCl Reactions for Use in Comparative Rate Studies

November 23, 2011

Author(s)

Donald R. Burgess Jr., Jeffrey A. Manion

The computations reported in this paper were done in conjunction with an experimental study involving single pulse shock tube measurements of the thermal decomposition of three chloroalkanes, and that work is reported in an accompanying preceding paper

Standard Reactions for Comparative Rate Studies: Experiments on the Dehydrochlorination Reactions of 2 Chloropropane, Chlorocyclopentane and Chlorocyclohexane

November 23, 2011

Author(s)

Iftikhar A. Awan, Donald R. Burgess Jr., Wing Tsang, Jeffrey A. Manion

Single pulse shock tube studies of the thermal dehydrochlorination reactions (chlorocyclopentane → cyclopentene + HCl) and (chlorocyclohexane → cyclohexene + HCl) at temperatures of 843 to 1021 K and pressures of 1.4 to 2.4 bar have been carried out using

DEMONSTRATION OF AN INTEGRATED MICRO CRYOGENIC COOLER AND MINIATURE COMPRESSOR FOR COOLING TO 200 K

November 17, 2011

Author(s)

Ryan J. Lewis, Mu Hong Lin, Yunda Wang, Jill Cooper, Peter E. Bradley, Ray Radebaugh, Marcia L. Huber, Yung-Cheng Lee

Joule-Thompson (J-T) based micro cryogenic coolers (MCCs) are attractive because they can provide the cryogenic temperatures needed for small electronic devices while having a low cost and small volumetric footprint. A compressor is a major part of a

A Polyimide Micro Heat Exchanger With a Suspended 3D Parallel Channel Structure for Cryogenic Application

November 11, 2011

Author(s)

Yunda Wang, Ryan J. Lewis, Mu Hong Lin, Yiwei Yan, Ray Radebaugh, Peter E. Bradley, Yung-Cheng Lee

A heat exchanger (HX) plays an important role in many cryogenic systems. This paper demonstrates a fully integrated fabrication process to make a novel monolithic polyimide micro heat exchanger. The structure of this heat exchanger consists of two parallel

Cryocoolers for Aircraft Superconducting Generators and Motors

June 13, 2011

Author(s)

Ray Radebaugh

The proposal by NASA to use high temperature superconducting (HTS) generators and motors on future (2035) aircraft for turboelectric propulsion imposes difficult requirements for cryocoolers. Net refrigeration powers of about 5 kW to 10 kW at 50 K to 65 K

Temperature instability comparison of micro- and mesoscale Joule-Thomson cryocoolers employing mixed refrigerants

June 13, 2011

Author(s)

Peter E. Bradley, Ray Radebaugh, Ryan J. Lewis, Mu Hong Lin, Yung-Cheng Lee

Previously we demonstrated cryogenic cooling in a Joule-Thomson microcryocooler (MCC) with mixed refrigerants operating at pressure ratios of 16:1 that achieved stable temperatures of 140 K with transient temperatures down to 76 K with precooling of the

Micro Cryogenic Coolers for IR Imaging

April 29, 2011

Author(s)

Ryan J. Lewis, Yunda Wang, Jill Cooper, Mu Hong Lin, Victor M. Bright, Yung-Cheng Lee, Peter E. Bradley, Ray Radebaugh, Marcia L. Huber

Joule-Thomson micro cryogenic coolers (MCCs) are a preferred approach for small and low power cryocoolers. With the same heat lift, MCC's power input can be only 1/10 of a thermoelectric cooler's input, and MCC's size can be only 1/10 of a Stirling cooler