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Colloquium: Synchrotron X-rays and lattice dynamics: Implications in chemistry, geology and physics

Event Details:

  • Date:       Monday 11 November 2019
  • Time:      Starts: 16:30
  • Venue:    The Cyprus InstituteGuy Ourisson Building, Seminar Room, 1st Floor, Athalassa Campus
  • Speaker: Prof. Esen Ercan Alp, Argonne National Laboratory (ANL), Illinois, USA
The colloquium will be in English and the event is open to the public.
Live streaming of the lecture will be available on The Cyprus Institute’s YouTube Channel
Live streaming is facilitated by the CySTEM project funded by the European Union’s Horizon 2020 Research and Innovation program under Grant Agreement No. 667942.
Images and/or recordings of our open public events may be used by The Cyprus Institute for dissemination purposes including print and digital media such as websites, press-releases, social media, and live streaming.

 

Abstract

It’s been almost 45 years since the idea of using a synchrotron source to excite the Mossbauer isotopes was proposed. Since then significant progress has been made in developing the methodology, instrumentation and data analysis. Application areas are extended into wide range of scientific disciplines. In this talk, I will review the key issues addressed by nuclear resonant scattering methods in geophysics and geochemistry such as velocity of sound of earth-bound minerals, iron valence and isotope fractionation in core-mantle boundary under high pressure. Similarly, determination of possible pathways related to the functions of iron-containing biological systems or catalysts will be discussed. The extension of the method to more than a dozen isotopes provides a wide-ranging tool to study the interplay between magnetism and superconductivity in new quantum materials like pnictides. This presentation will review modern applications, and provide a perspective view.

Synchrotron X rays and lattice dynamics

(*) In collaboration with J. Zhao, T. Toellner, M. Hu, and W. Bi.

Work supported by US  DOE Office of Science under contract DE-AC02-06CH11357 and by Consortium for Materials Properties Research in Earth Sciences (COMPRES), the National Science Foundation (NSF) through Grant No. DMR-1104742. 

 

About The Speaker

Ercan Alp

Esen Ercan Alp is a senior physicist and Argonne Distinguished Fellow in the X-ray Science division at Argonne National Laboratory. His research has focused on the development of nuclear resonance scattering techniques and applying them to problems in condensed matter physics, geophysics and biochemistry.

He joined Argonne as a postdoctoral associate in the Materials Science division, and subsequently became assistant physicist in the X-ray Scattering group. Dr Alp moved to the Advanced Photon Source (APS) project in 1990 to lead the development of the 3-ID beamline for nuclear resonant and inelastic X-ray scattering. From 1999-2003 he was the group leader for the inelastic scattering group. During this time, he was responsible for the design and construction of a novel groundbreaking beamline for high-resolution inelastic scattering measurements at 30-ID.

His research has focused on the development of nuclear resonance scattering techniques and applying them to problems in condensed matter physics, geophysics and biochemistry. He has co-authored over 310 publications, which have been cited more than 9,200 times. He has been extensively involved in international scientific outreach efforts through the American Physical Society, including participation in the SESAME synchrotron project in Amman, Jordan. Dr Alp was recently named the 2019 winner of the IBAME Science Award, given every two years to one of the top Mössbauer spectroscopists world-wide. He received BSc and MSc degrees in metallurgy and materials science from Middle East Technical University in Ankara, Turkey, and a PhD in physics from Southern Illinois University, where his thesis focused on using Mössbauer spectroscopy to understand metallic glasses.

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Additional Info

  • Date: Monday 11 November 2019
  • Time: Starts: 16:30
  • Speaker: Prof. Esen Ercan Alp
  • Speaker Position: Argonne National Laboratory (ANL), Illinois, USA