[Jlabsa_gs] **Today** Pizza Seminar - Wednesday, March 22, 2017 - A Message From Hari Areti

Jodi Patient patient at jlab.org
Wed Mar 22 09:03:18 EDT 2017


Thank you to all of those who RSVP'd.  See you at noon today in F113.

Jefferson Lab's Graduate Student and Post-Doc Association Wiki:
  https://gspda.jlab.org/wiki/index.php/Main_Page

               Please RSVP to:  patient at jlab.org by COB on March 20, 2017


                                 Wednesday, March 22, 2017

                                         ***F113***

                                        12:00-1:00 pm

 
                  "Gamma-ray vortex beams carrying orbital angular momentum"
                             

                                       Yoshitaka Taira

        
                    National Institute of Advanced Science and Technology                                      

Abstract:

In this talk, I will present development of a gamma-ray vortex using an
inverse Compton scattering (ICS). The vortex beam forms a helical
wavefront along the direction of propagation and carries discrete values
mħ of orbital angular momentum (OAM) per photon. Fundamental and
applied research on optical vortices using visible wavelength lasers is
ongoing. However, vortex beams are not limited to visible light but
include the sub-MeV electron vortex, ∼10 keV X-ray vortex. ICS of a
laser photon by a relativistic electron is one of the promising technique
to generate the gamma-ray vortex in the MeV and GeV range. Gamma-ray
vortex providing an additional degree of freedom will open new research
opportunities to the nuclear physics.

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