"Post-doctoral researchers contribute greatly to the Lab's internal vitality as well as our technical reputation and visibility in the scientific community. This new program will help provide an outstanding experience for post-docs while at SNL and advance their skills for future success." ~ Dr. Richard Stulen
Post-Doctoral
Professional Development Program
Mission Statement:
To advance Sandia National Laboratory’s research enterprise thru fostering a robust postdoctoral community and enhancing the quality of the postdoctoral experience for all participants
Goals of the [PD]2P Program:
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To facilitate post-docs transitioning into careers as outstanding independent researchers by providing resources for professional development
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To formalize a visible program to organize and network post-docs and highlight post-doc work
In a tight funding environment, institutions must find creative ways
to improve postdoc benefits and foster a thriving scientific atmosphere. ... read
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Post-Doc/Recent Staff Seminar (PReSS)
Thursday May 29, 2008
Explosives under Shock: Simulating PETN using Reactive Molecular Dynamics
Joanne Budzien (1814)
Sandia National Laboratories, Albuquerque
Energetic materials are an important class of materials that are difficult to study experimentally because of the short times and extreme conditions of the interesting phenomena. Atomistic simulations using reactive forcefields allow insight into the underlying processes by providing details that are unavailable from experiment. This talk will show the results of simulations of the industrially important energetic material PETN. These simulations were conducted under two shock intensities, which bracket the shock-to-detonation transition. The novelty of this work is the tracking of concentration profiles of chemical species through the crystal as the chemical reactions occur.
Developing a Laser-Based Ionization Approach for Detecting Explosives with Ion Mobility Spectrometry
Jeffrey Headrick (8368)
Sandia National Laboratories, Livermore, CA
A laser-based ionization approach is being developed for detecting explosives by means of ion mobility spectrometry (IMS). We demonstrate that explosive surrogates nitrobenzene and 2,4 – dinitrotoluene (DNT) will fragment and subsequently ionize when a laser is tuned over the nitric oxide (NO) A2S+ ← X2P (1,0) transition. While the IMS signals for both compounds exhibit a wavelength dependence characteristic of NO resonance enhanced multi-photon ionization, the IMS ion-arrival waveforms for nitrobenzene and 2, 4 – DNT are considerably different. We take advantage of these differences when analyzing a 10:1 nitrobenzene:2, 4 – DNT mixture, demonstrating that the technique of covariance mapping can extract the weaker 2, 4 – DNT signal from the overwhelming nitrobenzene background. |
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![[PD]2P Logo](images/2007-01-25%20SimpleLogo%20-%20opaque.png)
PD2P All Hands Meeting 2008
Bruce Burckel giving a PReSS talk 9/20/07 |
