Department of Nuclear and Atomic Physics Seminars

"Imaging an isolated molecule using laser-induced electron diffraction".

by Dr. Moniruzzaman Shaikh (The Barcelona Institute of Science and Technology,Spain)

Thursday, August 8, 2019 from to (Asia/Kolkata)
at TIFR, Mumbai ( AG - 66 )
Description
Laser-induced electron diffraction (LIED) is a self-imaging method based on laser driven scattering. In a three step process, first an electron is liberated from the target molecule by tunnel ionization in a strong laser field. Second, the electron is accelerated in the laser field such that it returns to its molecular parent ion within one optical cycle. In the third step the electron is re-scattered at the target ion and thereby acquires its structural information. All these happen within a fraction of a laser period. Thus, conceptually LIED is a time-resolved version of conventional electron diffraction. We have implemented LIED by combining a CEP-stable mid-infrared laser system (3.2 ┬Ám, 100 fs, 160 kHz) with single electron-ion coincidence detection in a reaction microscope. This talk will focus on the LIED technique followed by our recent findings