Explore WIU
Apply NowTop Navigation
Department of Physics
Fall 2005 | Spring 2006 | Fall 2006 | Spring 2007 | Fall 2007 | Spring 2008 | Fall 2008 | Spring 2009 | Fall 2009 | Spring 2010 | Fall 2010 | Spring 2011 | Fall 2011 | Spring 2012 | Fall 2012 | Spring 2013
Colloquia & Seminars, Spring 2013
Fluorescence Active Resonance States of Helium-like Ions
Speaker: Dr. Sukhamoy Bhattacharyya
Date: Friday, March 29, 2013
Time: 3:30 pm
Room: 205 Currens Hall
Abstract: The spectral properties of atomic systems under different environments change considerably compared with those of the free systems. Currently this is a subject of wide interest in astrophysics, plasma physics, condensed matter physics and many other areas. The first phase of the talk is prepared to provide an overview of the spectral properties of bound and resonance states of two-electron atoms in free case as well as in some external environment like plasma confinement, spherical cavity etc. In the second phase, the dominance of fluorescence decay probability over autoionization for some resonance states of helium-like atoms will be discussed. Theoretical explanation of the peculiar behavior of some resonance states showing dominant dipole transition probability has been established. Present theoretical results have been verified in collaboration with experimental groups for two-electron ions of Cl and Si. Relevance with some astrophysical data for helium-like Oxygen from Jupiter has been established.
About the speaker:
Dr. Sukhamoy Bhattacharyya presently works as a Fulbright post-doctoral scholar at the Department of Physics, Auburn University. He is an Assistant Professor in APC College (affiliated to West Bengal State University, India). His research interest is in theoretical spectroscopy of two-electron atoms and different exotic systems under different kind of confinements with applications in plasma diagnostics, astrophysical data analysis.
Wind Energy: Renewable Portfolio Standard and Production Tax Credit
Speaker: Jeff Reinkemeyer
Date: February 21, 2013,
Time: 3:30 pm
Room: 205 Currens Hall
About the speaker:
Jeff Reinkemeyer is a Director of Eastern Renewable Development with Iberdrola Renewables, LLC. Originally from Jefferson City, Missouri, Jeff graduated from University of Missouri Rolla with a BS degree in Mechanical Engineering, and is a licensed Professional Engineer, and a Certified Energy Manager. At Iberdrola Renewables Jeff managed the BOP construction for the 72 MW Providence Heights wind project currently operating in Bureau County, was the lead developer for the 300 MW Streator Cayuga Ridge South wind project currently operating in Livingston County. He currently oversees development activities on around 1,000 MW of wind and solar projects in Illinois, Missouri, and Kentucky.
Superconducting gap studies of iron-based superconductors from London penetration depth and thermal conductivity measurements
Speaker:
Dr. Ryan Gordon
Date: February 15, 2013,
Time: 4 pm
Room: 205 Currens Hall
Abstract
Newly discovered iron-based superconductors may be the key to understanding how the general mechanism of high-temperature superconductivity is possible. One way to gain insight into how this phenomenon works is to experimentally probe the superconducting gap, which contains information about the electronic interactions that give rise to this state. Two experimentally measurable quantities that are sensitive to the superconducting gap structure are the London penetration depth and the thermal conductivity. During my talk, I will discuss recent data taken on several different members of the family of iron-based superconductors from London penetration depth and thermal conductivity measurements. Based on the results of these measurements, I will summarize what can be said about the superconducting gap in these materials.
About the speaker:
Dr. Ryan Gordon is the newest Physics professor at Western Illinois University. He earned his B. S. in Physics and Mathematics from WIU in 2005 and went on to earn his Ph. D. in Condensed Matter Physics from Iowa State University in 2011. From there, Dr. Gordon conducted postdoctoral research at University of Sherbrooke in Quebec, Canada. While he was a student at WIU, Dr. Gordon was awarded the prestigious Barry M. Goldwater Scholarship for high-achieving undergraduates in the sciences. Since arriving at WIU, he has begun setting up his laboratory to study various physical phenomena related to superconductivity and magnetism in materials by using tunnel diode resonators.
WIU Physics Department Lecture Series on Nobel Prizes
Measuring and Manipulating Individual Quantum Systems: Trapped Atomic Ions
Speaker:
Dr. James Rabchuk
Date: February 1, 2013,
Time: 4 pm
Room: 205 Currens Hall
Abstract
The Nobel Prize in Physics 2012 was awarded jointly to Serge Haroche and David J. Wineland "for ground-breaking experimental methods that enable measuring and manipulation of individual quantum systems.
About the speaker:
Professor Dr. James Rabchuk is a physics professor from the Department of Physics, Western Illinois University.
