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



  Jan 19 - Feb 16,  2017


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

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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

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9:30-10:00 FREE DISCUSSION
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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 Greenfs function. We discuss some resonant features associated with SFISs@in the calculated spectra.

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10:30-10:45 FREE DISCUSSION
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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.

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11:45-13:00 FREE DISCUSSION
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Feb 6   (Mon) 2017@

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

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17:00-18:00 FREE DISCUSSION
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Toru Morishita,UEC