Bulletin of the American Physical Society
2005 TSAPS/AAPT/SPS Joint Fall Meeting
Thursday–Saturday, October 20–22, 2005; Houston, TX
Session E1: Computational III |
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Room: Palacio del Rio 279 |
Saturday, October 22, 2005 10:30AM - 10:42AM |
E1.00001: Implementation of the Open Science Grid and Related Physics Computing Projects at Texas Tech University Brian McGonagill |
Saturday, October 22, 2005 10:42AM - 10:54AM |
E1.00002: Microwave Enhanced Polarization in Carbon Dioxide Molecule James Roberts, Aman Anand, Jai Dahiya The chemistry of carbon dioxide is one of the most interesting topics for the scientists in this modern age of technology. Science has made tremendous progress in several fields and humanity is reaping the rewards of this important progress. But at the same time this progress in technology has a big price tag for humanity to pay and this is in terms of the pollution that we as human beings have to face. The Green House Effect is one of the hottest topics of this modern technological era. A significant percentage of this problem is the presence of carbon dioxide in the atmosphere that is depleting the ozone layer. This is a very critical problem and the problem is based on the unavoidable production of carbon dioxide required in this modern technological world. In this research paper a possible solution to this problem in which one can make use of the CO$_{2}$ molecule and avoid its exposure to the atmosphere is given. In this experiment microwave technology is used to activate carbon dioxide. The amount of carbon dioxide has increased significantly in the last decade: This enhances the green house effect. A lot of research has been done on the activation of carbon dioxide photo chemically and electrochemically. But no reports have been given on the research subject of activating carbon dioxide by using microwave technology. The main goal of this research experiment is to activate and utilize the CO$_{2}$ molecule by using microwave technology. [Preview Abstract] |
Saturday, October 22, 2005 10:54AM - 11:06AM |
E1.00003: Sensitivity of depolarized lidar signals to cloud and aerosol particle properties Yu You, George Kattawar, Ping Yang, Yong Hu, Bryan Baum Measurements from depolarized lidars provide a promising method to retrieve both cloud and aerosol properties, which play an important role in the modeling of the global atmospheric system and in the forecasting of climate, and thus can help prevent meteorological disasters. For depolarization study of space- borne lidars, e.g., the upcoming CALIPSO lidar, multiple scattering must be included in the analysis. Monte Carlo simulation is a powerful approach to investigate the multiple scattering, especially for multi-layer clouds and/or aerosols. Monte Carlo calculations are carried out to investigate the sensitivity of lidar backscattering depolarization to cloud and aerosol properties. Lidar parameters are chosen to simulate those of the CALIPSO lidar. It is demonstrated that besides thermodynamic cloud phase, the depolarized lidar signal may provide additional information on ice particle shapes as well as aerosol particle shapes and types. Additionally, for the multi- layer case involving both ice clouds and aerosols, the depolarized lidar contains information that can help identify particle properties of each layer. [Preview Abstract] |
Saturday, October 22, 2005 11:06AM - 11:18AM |
E1.00004: Study of the Spherical Harmonic Power Spectrum of the EGRET All-Sky Dataset Daniel Suson Studies of transformed data sets have always yielded new insights into the underlying physics. For time series, Fourier transforms provide the energy spectrum driving the event. For data projected onto a sphere, such as astronomical all-sky maps, spherical harmonics perform the same transforming role. In this case, the underlying angular distribution spectrum is revealed. In turn, this yields insights into the scale of the forces organizing the structure. Spherical harmonic power series analysis has already been successfully applied to studies of the cosmic microwave background and to the oscillation modes of the Sun. It is now used to examine the gamma-ray sky as seen by EGRET. The results of this study and its implications for future missions, such as GLAST, are discussed. [Preview Abstract] |
Saturday, October 22, 2005 11:18AM - 11:30AM |
E1.00005: Characterization of Selective area deposited CdTe Polycrystal solar cells Jose Luis Cruz-Campa, Lopez Cesar, Escovedo Arev, Sandra Oyer, Jacob Rascon, Estella Quinones, Zubia David Due to the increasing demand of energy, renewable sources have become a research focus. The economic advantage of CdTe-based solar cells is their low cost of manufacture compared to Si and GaAs cells; however the tradeoff is lower efficiency due to the processes that yield polycrystalline films. Although the theoretical efficiency is 29 percent, the current record efficiency is 16.5 percent. Current research at UTEP's Nano Materials Integration Laboratory (NanoMIL) has centered on CdTe based devices, applying a technique of ordered polycrystalline films to make them behave as single crystal materials trying to improve the efficiency. This talk will present the current progress and results of structural characterization of ordered polycrystalline CdTe thin films. [Preview Abstract] |
Saturday, October 22, 2005 11:30AM - 11:42AM |
E1.00006: Isospin and Limit Temperatures in Heavy Ion Collisions Armando Barranon, Jorge Alberto Lopez Gallardo, F. de L. Castillo Limit temperatures for several Heavy Ion Collisions have been computed using LATINO model. Classical gas entropy and Kinetic Theory Temperature are computed for participant nucleons. Spinodal limit temperatures are obtained in the spinodal region signed by a negative value of the squared rapidity. When isospin is changed a minimal change of these limit temperatures is obtained in agreeement with recent experimental results. Authors acknowledge financial support from UAM-Azcapotzalco, ESFM-IPN and UT-El Paso. [Preview Abstract] |
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