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

https://doi.org/10.1088/0953-4075/48/10/105002

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

https://doi.org/10.1103/PhysRevA.91.021402

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

https://doi.org/10.1088/0953-4075/46/16/164020

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

https://doi.org/10.1364/OE.20.023174

Interatomic Coulombic decay following the Auger decay; Experimental evidence in rare-gas dimers

Ueda, Kiyoshi*; Fukuzawa, Hironobu*; Liu, X.*; Sakai, Katsunori*; Prmper, G.*; Morishita, Yuichiro*; Saito, Norio*; Suzuki, Isao*; Nagaya, Kiyonobu*; Iwayama, Hiroshi*; et al.

Journal of Electron Spectroscopy and Related Phenomena, 166-167, p.3 - 10, 2008/11

https://doi.org/10.1016/j.elspec.2008.03.002

Interatomic Coulombic decay (ICD) in Ar, ArKr and Kr following Ar 2p or Kr 3d Auger decay has been investigated by means of momentum-resolved electron-ion-ion-coincidence spectroscopy. This sequential decay leads to Coulombic dissociation into dication and monocation. Simultaneously determining the kinetic energy of the ICD electron and the kinetic energy release between the two atomic ions, we could unambiguously identify the ICD channels. We find that, in general, spin conserved ICD, in which the singlet (triplet) dicationic state produced via the atomic Auger decay preferentially decays to the singlet (triplet) state, transferring the energy to the other atom, is faster than the spin-flip ICD, in which the Auger final singlet (triplet) dicationic state decays to the triplet (singlet) state.

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, , 

Fluorescence from Ar 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

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, , 

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, , 

Multiple-transition superradiance from EUV-FEL excited helium atoms, 1; Experiment

Nakajima, Kyo*; Harries, J.; Iwayama, Hiroshi*; Kuma, Susumu*; Miyamoto, Yuki*; Nagasono, Mitsuru*; Ohae, Chiaki*; Togashi, Tadashi*; Shigemasa, Eiji*; Sasao, Noboru*

no journal, , 

no abstracts in English