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Journal Articles

Simultaneous measurements of superradiance at multiple wavelength from helium excited states, 2; Analysis

Ohae, Chiaki*; Harries, J.; Iwayama, Hiroshi*; Kawaguchi, Kentaro*; Kuma, Susumu*; Miyamoto, Yuki*; Nagasono, Mitsuru*; Nakajima, Kyo*; Nakano, Itsuo*; Shigemasa, Eiji*; et al.

Journal of the Physical Society of Japan, 85(3), p.034301_1 - 034301_10, 2016/03

 Times Cited Count:7 Percentile:56.08(Physics, Multidisciplinary)

Journal Articles

A Streak camera study of superfluorescence at multiple wavelengths from helium atoms excited using free electron laser pulses

Harries, J.; Iwayama, Hiroshi*; Nagasono, Mitsuru*; Togashi, Tadashi*; Yabashi, Makina*; Kuma, Susumu*; Nakajima, Kyo*; Miyamoto, Yuki*; Ohae, Chiaki*; Sasao, Noboru*; et al.

Journal of Physics B; Atomic, Molecular and Optical Physics, 48(10), p.105002_1 - 105002_9, 2015/05

 Times Cited Count:7 Percentile:45.32(Optics)

Journal Articles

Simultaneous measurements of super-radiance at multiple wavelengths from helium excited states, 1; Experiment

Nakajima, Kyo*; Harries, J.; Iwayama, Hiroshi*; Kuma, Susumu*; Miyamoto, Yuki*; Nagasono, Mitsuru*; Ohae, Chiaki*; Togashi, Tadashi*; Yabashi, Makina*; Shigemasa, Eiji*; et al.

Journal of the Physical Society of Japan, 84(5), p.054301_1 - 054301_7, 2015/05

 Times Cited Count:6 Percentile:50.68(Physics, Multidisciplinary)

Journal Articles

Transient charge dynamics in argon-cluster nanoplasmas created by intense extreme-ultraviolet free-electron-laser irradiation

Iwayama, Hiroshi*; Harries, J.; Shigemasa, Eiji*

Physical Review A, 91(2), p.021402_1 - 021402_5, 2015/02

 Times Cited Count:14 Percentile:68.48(Optics)

Journal Articles

Photon-in, photon-out gas-phase experiments at the SPring-8 compact SASE source SCSS

Harries, J.; Iwayama, Hiroshi*; Okihara, Lisa*; Nagasono, Mitsuru*; Shigemasa, Eiji*

JPS Conference Proceedings (Internet), 1, p.013083_1 - 013083_6, 2014/03

Journal Articles

Superfluorescence observed using an EUV-FEL

Harries, J.; Shigemasa, Eiji*

Hoshako, 26(6), p.327 - 334, 2013/11

We report on the first observation of superfluorescence (collective spontaneous emission) at an FEL, using the EUV free-electron laser and a high number density helium gas cell. We introduce superfluorescence as an example of quantum optics experiments which can be performed at the new generation of light sources, and discuss future prospects, including the extension to shorter wavelengths.

Journal Articles

Resonance-enhanced three-photon single ionization of Ne by ultrashort extreme-ultraviolet pulses

Shigemasa, Eiji*; Nagasono, Mitsuru*; Iwayama, Hiroshi*; Harries, J.; Ishikawa, Lisa*

Journal of Physics B; Atomic, Molecular and Optical Physics, 46(16), p.164020_1 - 164020_5, 2013/08

 Times Cited Count:0 Percentile:0.01(Optics)

Journal Articles

Towards coherent control of SASE pulses using propagation through helium gas at wavelengths corresponding to double excitation

Harries, J.; Nagasono, Mitsuru*; Iwayama, Hiroshi*; Shigemasa, Eiji*

Journal of Physics B; Atomic, Molecular and Optical Physics, 46(16), p.164021_1 - 164021_5, 2013/08

 Times Cited Count:0 Percentile:0.01(Optics)

Journal Articles

Compact XFEL and AMO sciences; SACLA and SCSS

Yabashi, Makina*; Tanaka, Hitoshi*; Tanaka, Takashi*; Tomizawa, Hiromitsu*; Togashi, Tadashi*; Nagasono, Mitsuru*; Ishikawa, Tetsuya*; Harries, J.; Hikosaka, Yasumasa*; Hishikawa, Akiyoshi*; et al.

Journal of Physics B; Atomic, Molecular and Optical Physics, 46(16), p.164001_1 - 164001_19, 2013/08

 Times Cited Count:68 Percentile:96.33(Optics)

Journal Articles

Demonstration of up-conversion fluorescence from Ar clusters in intense free-electron-laser fields

Iwayama, Hiroshi*; Nagasono, Mitsuru*; Harries, J.; Shigemasa, Eiji*

Optics Express (Internet), 20(21), p.23174 - 23179, 2012/10

 Times Cited Count:15 Percentile:63.55(Optics)

Journal Articles

Observation of free-electron-laser-induced collective spontaneous emission (superfluorescence)

Nagasono, Mitsuru*; Harries, J.; Iwayama, Hiroshi*; Togashi, Tadashi*; Tono, Kensuke*; Yabashi, Makina*; Semba, Yasunori*; Ohashi, Haruhiko*; Ishikawa, Tetsuya*; Shigemasa, Eiji*

Physical Review Letters, 107(19), p.193603_1 - 193603_5, 2011/11

 Times Cited Count:33 Percentile:82.13(Physics, Multidisciplinary)

Oral presentation

Multi-atom, multi-photon collective decay (superfluorescence) following EUV-FEL pumping of He

Nagasono, Mitsuru*; Harries, J.; Iwayama, Hiroshi*; Togashi, Tadashi*; Tono, Kensuke*; Yabashi, Makina*; Semba, Yasunori*; Ohashi, Haruhiko*; Ishikawa, Tetsuya*; Shigemasa, Eiji*

no journal, , 

Oral presentation

Coherent spontaneous decay following multi-atom excitationwith FEL pulses; Prospects for X-ray superradiance from clusters

Harries, J.; Nagasono, Mitsuru*; Iwayama, Hiroshi*; Togashi, Tadashi*; Tono, Kensuke*; Yabashi, Makina*; Semba, Yasunori*; Ohashi, Haruhiko*; Ishikawa, Tetsuya*; Shigemasa, Eiji*

no journal, , 

Oral presentation

Observation of superfluorescence following extreme ultraviolet free-electron laser excitation

Nagasono, Mitsuru*; Harries, J.; Iwayama, Hiroshi*; Tono, Kensuke*; Togashi, Tadashi*; Semba, Yasunori*; Ohashi, Haruhiko*; Yabashi, Makina*; Ishikawa, Tetsuya*; Shigemasa, Eiji*

no journal, , 

no abstracts in English

Oral presentation

Fluorescence from Ar$$_2$$ excimer using EUV free electron laser

Nishi, Ryosuke*; Minami, Yuki*; Yamanoi, Kohei*; Nakazato, Tomoharu*; Shimizu, Toshihiko*; Sarukura, Nobuhiko*; Iwayama, Hiroshi*; Shigemasa, Eiji*; Harries, J.; Nagasono, Mitsuru*

no journal, , 

no abstracts in English

Oral presentation

Superfluorescence observed following EUV-FEL excitation of helium gas

Harries, J.; Nagasono, Mitsuru*; Iwayama, Hiroshi*; Togashi, Tadashi*; Tono, Kensuke*; Yabashi, Makina*; Semba, Yasunori*; Ohashi, Haruhiko*; Ishikawa, Tetsuya*; Shigemasa, Eiji*

no journal, , 

Oral presentation

The Interaction of SASE EUV-FEL pulses with high density atomic gas

Nagasono, Mitsuru*; Harries, J.; Iwayama, Hiroshi*; Togashi, Tadashi*; Tono, Kensuke*; Yabashi, Makina*; Semba, Yasunori*; Ohashi, Haruhiko*; Tanaka, Hitoshi*; Ishikawa, Tetsuya*; et al.

no journal, , 

Oral presentation

A Gas monochromator for SASE pulses using absorption in the vicinity of the doubly-excited states in helium

Harries, J.; Iwayama, Hiroshi*; Nagasono, Mitsuru*; Shigemasa, Eiji*

no journal, , 

Oral presentation

Superfluorescence from 1snp excited helium studied using a streak camera

Harries, J.; Iwayama, Hiroshi*; Nagasono, Mitsuru*; Togashi, Tadashi*; Kuma, Susumu*; Nakajima, Kyo*; Shigemasa, Eiji*

no journal, , 

Oral presentation

Cascade and competitive superfluorescence in He studied at the EUV free-electron laser SCSS using a streak camera

Harries, J.; Iwayama, Hiroshi*; Nagasono, Mitsuru*; Togashi, Tadashi*; Kuma, Susumu*; Nakajima, Kyo*; Shigemasa, Eiji*

no journal, , 

23 (Records 1-20 displayed on this page)