Multi-ionization of atoms and molecules in intense short-wavelength laser fields
| Project/Area Number |
24540425
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Atomic/Molecular/Quantum electronics
|
|---|
| Research Institution | Niigata University |
|---|
Principal Investigator |
|
|---|
| Co-Investigator(Renkei-kenkyūsha) |
HISHIKAWA Akiyoshi 名古屋大学, 理学(系)研究科(研究院), 教授 (50262100)
FUSHITANI Mizuho 名古屋大学, 理学(系)研究科(研究院), 助教 (50446259)
MATSUDA Akitaka 名古屋大学, 理学(系)研究科(研究院), 助教 (10413999)
|
|---|
| Project Period (FY) |
2012-04-01 – 2015-03-31
|
| Project Status |
Completed (Fiscal Year 2014)
|
| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2012: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
|
|---|
| Keywords | 原子分子物理学 / 多光子多重電離 / 多光子多重電 |
|---|
| Outline of Final Research Achievements |
Multi-photon absorption processes of atoms in intense short-wavelength laser fields has been studied by photoelectron spectroscopy. We have applied the magnetic bottle electron spectroscopic method, to achieve effective photoelectron spectroscopic researches with light sources of ultra intense and high photon energy. We have studied the three-photon double ionization of Ar in intense extreme ultraviolet free-electron laser fields over a photon energy range of 19.6-22.0 eV. It is found that the double ionization to Ar2+ proceeds sequentially via the formation of singly charged Ar+ states and is enhanced around photon energies of 20.5 and 21.5 eV. Two types of resonances are identified in the two-photon ionization of the Ar+ states: (i) resonances to intermediate states at the one-photon energy level and (ii) those to autoionizing states above the Ar2+ ionization threshold.
|
Report
(4 results)
Research Products
(19 results)
-
[Journal Article] Five-photon sequential double ionization of He in intense extreme-ultraviolet free-electron laser fields2014
Author(s)
Y. Hikosaka, M. Fushitani, A. Matsuda, T. Endo, Y. Toida, E. Shigemasa, M. Nagasono, K. Tono, T. Togashi, M. Yabashi, T. Ishikawa and A. Hishikawa
-
Journal Title
Phys. Rev. A
Volume: 90
Issue: 5
Pages: 0534031-5
DOI
Related Report
Peer Reviewed
-
-
-
[Journal Article] Resonances in three-photon double ionization of Ar in intense extreme ultraviolet free-electron laser fields studied by shot-by-shot photoelectron spectroscopy2013
Author(s)
Y. Hikosaka, M. Fushitani, A. Matsuda, T. Endo, Y. Toida, E. Shigemasa, M. Nagasono, K. Tono, T. Togashi, M. Yabashi, T. Ishikawa and A. Hishikawa
-
Journal Title
Phys. Rev. A
Volume: 88
Issue: 2
Pages: 0234211-6
DOI
Related Report
Peer Reviewed
-
-
-
-
-
-
-
[Presentation] Two-photon rabi oscillations of excited He atoms in ultrafast strong laser field lonization2014
Author(s)
M. Fushitani, C. Liu, A. Matsuda, T. Endo, Y. Toida, Y. Hikosaka, M. Nagasono, T. Togashi, M. Yabashi, T. Ishikawa, T. Morishita, A. Hishikawa
Organizer
19th International Conference on Ultrafast Phenomena (UP2014)
Place of Presentation
Okinawa
Year and Date
2014-07-07 – 2014-07-11
Related Report
-
[Presentation] Determination of absolute cross-sections of nonresonant EUV-UV two-color two-photon ionization of He2014
Author(s)
M. Fushitani, T. Hikosaka, A. Matsuda, T. Endo, E. Shigemasa, M. Nagasono, T. Sato, T. Togashi, M. Yabashi, T. Ishikawa, A. Hishikawa
Organizer
19th International Conference on Ultrafast Phenomena (UP2014)
Place of Presentation
Okinawa
Year and Date
2014-07-07 – 2014-07-11
Related Report
-
-
-
-
-
-
-
