Events Calendar View

• Departmental Colloquium Apr 15, 2021

  Water on the Lunar Surface: To be or not to be?

  

  Guest: Dr. Thomas M. Orlando, Georgia Institute of Technology
  Thursday, April 15, 2021 3:55 pm - 4:55 pm
  Location: Zoom Meeting

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  The sources of molecular water in planetary systems is a subject of general interest in astrophysics and astrochemistry and its presence and persistence are critical for space missions involving long term human exploration. The Moon is the nearest exploration target and sources of water include primordial water, delivery via comets and meteorites, formation and release during small impact events, and solar wind interactions. An additional source term of molecular water is the thermally activated process known as recombinative desorption (RD) or associative desorption (AD) from lunar regolith grains. This involves hydroxyl (-OH) defects that were made by implantation of solar wind protons. Using several Apollo lunar samples, temperature program desorption (TPD) experiments conducted under ultra-high vacuum conditions yielded first order activation energies for desorption of chemisorbed molecular water and second order activation energies for the RD mediated formation and release of molecular water. Depending on the temperature excursions, RD can occur on a diurnal basis and is likely prevalent during impacts with meteorites and meteoroids. Once formed, the water can either desorb, or be transported on and within the regolith. Our combined experimental and modeling effort has successfully simulated recent observational data. Water formation via RD is likely general under astrophysical conditions that involve proton bombardment followed by thermal excursions ( > 400 K), and is critical to developing strategies for extraction of water for future, sustainable human space exploration missions.

• CSP Lunch Seminar Apr 20, 2021

  Course-Graining Out of Equilibrium

  

  Guest: Tanja Schillin, Physikalisches Institut, Albert-Ludwigs-Universität Freiburg
  Tuesday, April 20, 2021 12:45 pm - 1:45 pm
  Location: Zoom Meeting

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• CSP Lunch Seminar Apr 27, 2021

  Langevin Dynamics Simulations of Doped Dielectric Materials

  

  Guest: Steven Hancock, Center for Simulational Physics, University of Georgia
  Tuesday, April 27, 2021 12:45 pm - 1:45 pm
  Location: Zoom Meeting

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• CSP Lunch Seminar Aug 24, 2021

  Introduction to Available Computing Resourses: CSP & GACRC

  

  Guest: Mike Caplinger and Shan-Ho Tsai, University of Georgia
  Tuesday, August 24, 2021 12:45 pm - 1:45 pm
  Location: Zoom Meeting

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• Departmental Colloquium Aug 26, 2021

  Using information to learn what matters

  

  Guest: Prof. Ilya Nemenman, Department of Physics, Emory University
  Thursday, August 26, 2021 3:30 pm - 4:30 pm
  Location: Physics Auditorium (202) and Zoom

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  Information theory was formulated by Shannon as the theory of communication. However, it has become a popular tool for answering a related — but a different — set of questions: namely, which features of a system are essential for its description, and therefore, must be preserved in a model describing it? These tools were developed largely in the context of biophysical systems, where traditional theoretical physics toolbox is insufficient to identify the relevant terms. I will walk us through a series of examples in different experimental biological and synthetic systems, where information theory has been used in this way.

• CSP Lunch Seminar Aug 31, 2021

  Sapelo2 Training Session

  

  Guest: Zhuofei Hou, GACRC/EITS, University of Georgia
  Tuesday, August 31, 2021 12:45 pm - 1:45 pm
  Location: CSP Conference Room (322) and Zoom

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