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Journal Articles

Many-electron dynamics of a Xe atom in strong and superstrong laser fields

Yamakawa, Koichi; Akahane, Yutaka; Fukuda, Yuji; Aoyama, Makoto; Inoue, Norihiro*; Ueda, Hideki; Utsumi, Takayuki*

Physical Review Letters, 92(12), p.123001_1 - 123001_4, 2004/03

https://doi.org/10.1103/PhysRevLett.92.123001
 Times Cited Count：68 Percentile：88.06(Physics, Multidisciplinary)

We report on detailed investigations of ionization dynamics of a Xe atom exposed to intense 800-nm pulses of 20-fs duration in the extensive intensity range from 10$$^{13}$$ to 10$$^{18}$$ W/cm$$^{2}$$. Ion yields of Xe$$^{+}$$ to Xe$$^{20+}$$ were observed as a function of laser intensity and compared with the results from a single active electron based Ammosov-Delone-Krainov model. Unexpected ionization probabilities for lower charge states and also no interplay between the inner- and outer-shells by screening are inferred. Suppression of nonsequential ionization towards higher intensity and few optical cycle regimes is also proved.

Journal Articles

Table-top lasers create ultrahigh peak powers

Yamakawa, Koichi

Oyo Butsuri, 73(2), p.186 - 193, 2004/02

https://ci.nii.ac.jp/naid/10011962919

no abstracts in English

JAEA Reports

Ionization dynamics of a xenon atom in super-strong laser fields

Yamakawa, Koichi; Akahane, Yutaka; Fukuda, Yuji; Aoyama, Makoto; Inoue, Norihiro*; Ueda, Hideki; Utsumi, Takayuki*

JAERI-Research 2003-030, 14 Pages, 2003/12

JAERI-Research-2003-030.pdf:0.75MB

We report on detailed investigations of ionization dynamics of a xenon atom exposed to intense 800-nm pulses of 20-fs duration in the extensiveintensity range from 10$$^{13}$$ to 10$$^{18}$$W/cm$$^{2}$$.Ion yields of Xe$$^{+}$$ to Xe$$^{20+}$$ were observed as a function of laser intensity and compared with the results from a single active electron(SAE) based Ammosov-Delone-Krainov(ADK) model.Unexpected ionization probabilities for lower charge states and also no interplay between the inner-and outer-shells by screening are inferred.Suppression of nonsequential ionization towards higher intensity and few optical cycle regimesis also proved.

Journal Articles

Ionization of many-electron atoms by ultrafast laser pulses with peak intensities greater than 10$$^{19}$$ W/cm$$^{2}$$

Yamakawa, Koichi; Akahane, Yutaka; Fukuda, Yuji; Aoyama, Makoto; Inoue, Norihiro*; Ueda, Hideki

Physical Review A, 68(6), p.065403_1 - 065403_4, 2003/12

https://doi.org/10.1103/PhysRevA.68.065403
 Times Cited Count：46 Percentile：84.47(Optics)

no abstracts in English

Journal Articles

Status and future developments of ultrahigh intensity lasers at JAERI

Yamakawa, Koichi; Akahane, Yutaka; Aoyama, Makoto; Fukuda, Yuji; Inoue, Norihiro*; Ma, J.; Ueda, Hideki

AIP Conference Proceedings 611, p.385 - 396, 2002/00

https://doi.org/10.1063/1.1470325

no abstracts in English

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