International workshop on theory for attosecond quantum dynamics (IWTAQD) 16



  Jan 19 - Feb 16,  2017


Direction to UEC: English, Japanese
Narita to UEC: English

back to IWTAQD page




More photos

Participants (Bldg. E-6, Rms. 525, 527)

Oleg I. Tolstikhin MIPT
 Adiabatic Theory, Tunneling ionization
 Jan 19 - Feb 4, 2017
Chiennan Liu Fu-jen catholic U He dynamics under FEL Feb 3 - 16, 2017
Akiyoshi Hishikawa Nagoya U FEL, Molecular dynamics
 Jan 24-25, 2017
Hideo Sekino
 Stony Brook U
 Time-dependent method
 Jan 31, 2017
Trinh Hoai Vinh RIKEN Attosecond dynamics, Tunneling ionization
 Jan 25, Feb 6, 2017
Toshiyuki Azuma
 RIKEN
 Intense Laser experiment
 Jan 24, 2017




Kohji Abe
 UEC Raman, high-rep exp
 Jan 19 - Feb 16,  2017
Masayuki Katsuragawa
 UEC Raman, high-rep exp
 Jan 19 - Feb 16,  2017
Takayohi Kobayashi
 UEC
 Laser Physics
 Jan 25,  2017
Tomotake Yamakoshi
 UEC
 Cold atoms Jan 25, Feb 6, 2017
Michio Matsuzawa
 UEC
Jan 25, 2017
Shinichi Watanabe
 UEC Cold atoms Jan 19 - Feb 16,  2017
Toru Morishita UEC
 Chair
 Jan 19 - Feb 16,  2017
Shun Ohgoda    
UEC
TDSE/Static Field Induced States   
Jan 19 - Feb 16,  2017
Hsumin Huang UEC 3-body break up Jan 19 - Feb 16,  2017
Masataka Ohmi UEC TDSE/Adiabatic theory
 Jan 19 - Feb 16,  2017
Bangman Wan
 UEC
Jan 19 - Feb 16,  2017
Hossain Ahmed
 UEC
Jan 19 - Feb 16,  2017
Yuki Takayama
 UEC
Jan 19 - Feb 16,  2017
Hitoshi Inasa
 UEC
Jan 19 - Feb 16,  2017
 Kazumasa Kobayashi
 UEC
Jan 19 - Feb 16,  2017
Hirokazu Matsui
 UEC
 Siegert states
 Jan 19 - Feb 16,  2017



Seminar Program
Jan 25  (Wed) 2017　
Place: Bldg. East 6, Rm. 803

=============================
9:30-10:00 FREE DISCUSSION
=============================

10:00-10:30 Shun Ohgoda (MIPT)
"Photoionization of hydrogen in a strong static electric field"
When a hydrogen atom is disturbed by a strong static electric field, resonant states in the positive energy region are induced. They are called Static-Field-Induced states (SFISs), and their quantization condition, energies and widths are theoretically investigated [A. V. Gets, and O. I. Tolstikhin, Phys. Rev. A87, 013419 (2013)]. In this talk, we presnet a theory and computational method to calculate photoelectron spectra of a hydrogen atom by single photon absorption under strong static field using the Green’s function. We discuss some resonant features associated with SFISs　in the calculated spectra.

=============================
10:30-10:45 FREE DISCUSSION
=============================

10:45-11:45  Oleg I. Tolstikhin (MIPT)
"Weak-field versus Born-Oppenheimer asymptotics in the theory of tunneling ionization of molecules  ntegral equation approach to the weak-field asymptotic theory of tunneling ionization"
Abstract
The weak-field asymptotic theory (WFAT) and the Born-Oppenheimer approximation (BOA) provide two general approaches to the theory of tunneling ionization of molecules enabling one to treat the internuclear motion quantum-mechanically on an equal footing with the electronic motion. The approaches are based on the asymptotic expansions in field strength and electron-to-nuclear mass ratio, respectively. The problem is that they yield quite different formulas for the ionization rate, which causes an ambiguity for applications in strong-field physics. A recent experimental observation of the isotope effect in tunneling ionization of hydrogen molecules [X. Wang et al., Phys. Rev. Lett. 117, 083003 (2016)] motivates us to address this theoretical ambiguity. TheWFAT
and BOA have different but overlapping regions of applicability in the field strength ― nuclear mass plane. We link the approaches analytically, in particular, show that the rate formulas in fact coincide in the overlap region where they both apply, and compare their predictions quantitatively.

=============================
11:45-13:00 FREE DISCUSSION
=============================

Feb 6   (Mon) 2017　

Place: Bldg. East 6, Rm. 527
==============================
13:00-15:00 FREE DISCUSSION
=============================

Place: Bldg. East 6, Rm. 529

15:00-16:00 Trinh Hoai Vinh (Riken)
"Two-electron dynamics of Helium by XUV pulses"
Abstract:
In this report, we are going to summarize our study on probing the molecule-like motions of two excited electrons by an attosecond single-color XUV pump-XUV probe scheme. Our initial calculations on the autoionization of 2s2p (P) resonance are also presented.

16:00-17:00 Chiennan Liu (Fu-jen catholic U)
"Strong field ionization of He by a XUV+IR  pulse"

 ==============================
17:00-18:00 FREE DISCUSSION
==============================



Toru Morishita,UEC