Ultrafast dynamics of intramolecular charge distributions by laser-assisted spectral-interference electron holography

2017 Fiscal Year Final Research Report

• Project/Area Number: 26288004
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: The University of Tokyo
• Principal Investigator: Kanya Reika 東京大学, 大学院理学系研究科(理学部), 准教授 (10401168)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 化学反応動力学 / アト秒科学

Outline of Final Research Achievements

We developed an algorithm for retrieving intramolecular charge distributions from spectral-interferences appearing in energy- and angular-distributions of scattered electrons originating from laser-assisted electron scattering (LAES) processes. We developed a LAES apparatus with high sensitivity and generated ultrashort laser pulses with the duration of 9 fs by the hollow-core-fiber compression method. Furthermore, we developed a computational program for calculating LAES signals induced by broadband ultrashort laser pulses, and showed that observation of spectral-interferences of LAES signals should be feasible. We proposed a new ultrafast electron diffraction method by using single-cycle THz-wave pulses, and demonstrated its performance by numerical simulations.

Free Research Field

物理化学