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Results 201–225 of 289

Novel Spectroscopic Method Reveals Intermediates over a Broad Spectrum
Post, December 2, 2013 • CRF researcher Leonid Sheps has developed a new spectroscopic method, Time-Resolved Broadband Cavity-Enhanced Absorption Spectroscopy (TR-BB-CEAS). The new technique is capable of following the time evolution of transient intermediates as they are produced and consumed in a gas-phase chemical reaction by monitoring their absorption of near-UV to visible light (300–700...
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November 2011
Post, December 8, 2011 • November 18, 2011 CRF manager Dennis Siebers hosted a visit with scientists Waldir Martignoni, Edimilson de Oliveira and Luiz Lopreato from Petrobras, a multinational energy corporation headquartered in Brazil. Traditionally an oil company, Petrobras is invested in developing environmentally friendly alternate energy sources. November 16, 2011 Hal Stillman, Director of...

Of blackboards and computer screens: scientific programming in the 21st century
Post, May 17, 2011 • Since he was a college student, Damian Rouson has been fascinated by the intersection of science and computing. Computers have transformed scientific research, yet the fields still exist on separate planes. He takes on the challenge of rendering computer languages, so vital to scientific advancements, more expressive and easier to...

Off-Road Diesel Engine Combustion Laboratory
Page • Figure 1 Research in the Off-Road Diesel Engine Combustion Laboratory is conducted using a single-cylinder, 6.7L research engine. This size class represents one of the most ubiquitous engines in off-road applications. Shown below is the all-metal variant of this engine. We are in the process of developing an optical section in...

Optical and Laser Spectroscopy
Page • The Combustion Research Facility has a long history of leadership in laser diagnostics, developing and characterizing optical laser techniques to detect and quantify important gas-phase species, temperature, and particulate matter in temporally and spatially resolved measurements. Research in spectroscopic methods underlies this leadership. CRF researchers are developing capabilities that interrogate...

Optimizing Engines for Alternative Fuels
Post, August 9, 2013 • by Magnus Sjöberg Given their potential to address issues related to limited petroleum reserves and accelerating global climate change, renewable fuels and improved engine efficiency are receiving significant research attention. Specifically, researchers are exploring the challenges of developing engines that can operate efficiently on alternative fuels, while offering high performance...
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Outstanding Technology: Ducted Fuel Injection
Post, March 9, 2021 • Sandia researchers won an Outstanding Technology Development Award for its work on ducted fuel injection (DFI), a patented technology that slashes emissions of soot and nitrogen oxides from diesel engines by about 80% and is synergistic with sus­tainable liquid fuels like biodiesel. According to Chuck Mueller, who leads the project,...

Particle Inception from Gas Phase Reactions
Page • The physical chemistry that enables particles to form and grow from gas phase precursors is highly complex and spans systems from the highly oxygenated particles of secondary organic aerosol to the carbonaceous particles of combustion, i.e., soot. At the CRF, scientists apply advanced mass spectrometric methods to probe the gas...

Paul Miles Appointed Manager of Engine Combustion Department
Post, July 8, 2014 • Paul Miles On June 6, Paul Miles became manager of the CRF’s Engine Combustion Department, which focuses on building the science base needed by industry to develop new generations of high-efficiency, clean engines. He took over the helm from departing manager Dennis Siebers, who recently retired from Sandia National Laboratories....

Pennsylvania Congressman Chaka Fattah visits CRF
Post, August 9, 2013 • On July 15, Congressman Chaka Fattah (PA-2nd) visited the Combustion Research Facility. He met with Transportation Energy Center Director Bob Carling and Deputy Director of Chemical Sciences Dawn Manley to learn about research programs at the CRF and visited Mark Musculus’ optical engine lab. Congressman Fattah serves on the Appropriations...
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People
Page • Experimental Capabilities Computation & Theory Chemical Physics Engine Combustion Hydrogen Fusion & Plasma Materials Science

PEPICO
Page • Photoelectron Photoion Coincidence Spectroscopy (PEPICO): A New Tool for Chemical Physics of Complex-Forming Reactions Figure 1 Photoelectron image at a particular kinetic time giving the fingerprint for one chemical species in a reaction. Source: Sandia National Laboratories. Figure 2 A depiction of the radical thermometer for methyl peroxy radicals (CH3OO)....

Photoionization Mass Spectrometry
Page • Figure 1 The reactor tube and skimmer of one multiplexed photoionization mass spectrometer at the CRF, which is optimized for the study of low-pressure individual reactions and reaction sequences. Source: D. L. Osborn, Sandia National Laboratories Technical Details It is difficult to probe a complex chemical system holistically. Although a...

Plasma Diagnostics
Page • The laser diagnostic and mass spectrometry expertise at the CRF is also being applied to probe the chemical structure of nonequilibrium reacting plasmas. In particular, the influence of excited molecular and atomic species formed in a plasma discharge on fuel oxidation, plasma stability, and the reforming of CO2 to produce...

Portable Hydrogen Fuel Cell Unit to Provide Green, Sustainable Power to Honolulu Port
Post, April 3, 2014 • Clean hydrogen power that’s expected to lower emissions and reduce energy consumption will be coming to the Port of Honolulu in 2015 after the completion of a new fuel cell technology demonstration, one that could lead to a commercial technology for ports worldwide. A new fuel cell demonstration project led...
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Postdoctoral Researcher Oliver Welz Moves on to Next Challenge
Post, April 15, 2014 • Oliver Welz Oliver Welz, a postdoctoral researcher in the CRF’s Combustion Chemistry group since 2010, will soon be taking on a new challenge as head of a research group in chemical kinetics at the University of Duisburg-Essen in Germany. In this position, the first step to becoming a full professor...

Probing Chemistry Far from Equilibrium
Page • A central goal of chemistry is to control the path of a chemical reaction, thereby producing a desired product with minimal waste or impurities. However, the arrangement of atoms in any molecule predisposes it to certain reaction pathways, often leading to undesirable products. By pushing molecules far from their equilibrium...

Publications
Page • Selected Publications Bin-Khalid, U.; Lopez-Pintor, D.; Micó, C.; Lee, S., Potential of 2-ethylhexyl nitrate (EHN) and di-tert-butyl peroxide (DTBP) to enhance the cetane number of ethanol, a detailed chemical kinetic study. Fuel 2024, 363, 130928. Buurman, N.J.; Nyrenstedt, G.; Mueller, C.J., Ducted Fuel Injection Provides Consistently Lower Soot Emissions in...

Reaching out to the community: The CRF hosts Industry Day
Post, March 21, 2012 • One of the key aspects of the CRF’s mission is to encourage collaborations between our researchers and the academic and corporate communities, especially to help our partners develop Sandia-based technologies into commercial products that bring value to the larger public. Recently, the CRF recently hosted its first ‘Industry Day,’ an...
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Remembering Kevin Strecker
Post, December 12, 2012 • Kevin Strecker CRF researcher Kevin Strecker was a brilliant physicist with a child’s enthusiasm and curiosity for science, a giving mentor, and a person who cared deeply for others. On Nov. 4, he died of a heart attack at the age of 38. He is survived by his wife of...

Research
Page • Experimental Capabilities Sandia Labs scientists develop ground-breaking experimental measurement capabilities, working on the frontiers of spectroscopic science and analytical methods to provide novel insights. We not only develop and apply sensitive and high-resolution optical and laser spectroscopy methods, but also have been instrumental in developing photoionization mass spectrometry for flame...

Resilient EXtreme Scale Scientific Simulations
Page • What We Do The Resilient EXtreme Scale Scientific Simulations (REXSSS) team develops methods to increase the resiliency of scientific simulations to system faults, such as node crashes or silent data corruptions (SDCs) from bit-flips. Most of our work so far has focused on resilient solvers for elliptic partial differential equations...

Richard Karnesky
Staff Page • Materials Physics. Biography I manage the Energy Nanomaterials department at Sandia/CA. In my work as an individual contributor, I studied hydrogen isotopes in metals. I am passionate about scientific outreach, having led a lecture-in-a-bar series called “Nerd Nite” and broadcasting a weekly science show on KALX (90.7 FM) called “Spectrum”....
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Robert Barlow Awarded Combustion Institute’s Alfred C. Egerton Gold Medal
Post, September 12, 2014 • Robert Barlow (left) with former Sandian and current research collaborator Simone Hochgreb of the University of Cambridge, who presented him with the Alfred C. Egerton Gold Medal at the 35th International Symposium on Combustion. Sandia National Laboratories scientist Robert Barlow was awarded the Alfred C. Egerton Gold Medal at the...
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Robert Kolasinski wins DOE Early Career Award
Post, May 10, 2016 • By Michael Padilla Robert Kolasinski (8366) has received a $2.5 million, five-year Early Career Research Program award from the Department of Energy’s (DOE) Office of Science to support his work on how intense fusion plasmas interact with the interior surfaces of fusion reactors. Robert’s research will develop the scientific foundations...
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Results 201–225 of 289