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Yasumasa Hikosaka
Researcher at Niigata University
Publications - 84
Citations - 1020
Yasumasa Hikosaka is an academic researcher from Niigata University. The author has contributed to research in topics: Ionization & Ion. The author has an hindex of 18, co-authored 71 publications receiving 925 citations.
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Journal ArticleDOI
Efficient production of metastable fragments around the 1s ionization threshold in N2
TL;DR: In this article, the metastable observation is used to study the decay dynamics of core-excited states and the photoelectron recapture due to post-collision interaction.
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Superexcited states of OCS probed by using photoelectron spectroscopy for autoionizing atomic sulfur
TL;DR: In this article, a two-dimensional photoelectron spectroscopy using synchrotron radiation in the photon energy range of 14.2 −16.8 eV was used to study neutral dissociation of superexcited states of OCS.
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Auger decay of molecular double core-hole and its satellite states: comparison of experiment and calculation.
Motomichi Tashiro,M. Nakano,Masahiro Ehara,Francis Penent,Francis Penent,Lidija Andric,Lidija Andric,Jérôme Palaudoux,Jérôme Palaudoux,Kenji Ito,Yasumasa Hikosaka,Noriyuki Kouchi,Pascal Lablanquie,Pascal Lablanquie +13 more
TL;DR: The theoretical calculations on the Auger decay of the N(2) single-site DCH state suggest that the nuclear motion, together with the highly repulsive potential energy curves of the final states, makes an important effect on the energy distribution of theAuger electrons emitted in the secondAuger decay.
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Two-dimensional photoelectron spectroscopy of acetylene: Rydberg-valence interaction between the (3σg)−1(3pσu)1 and (3σg)−1(3σu)1 states
TL;DR: In this paper, two-dimensional photoelectron spectroscopy was performed for studying autoionization of acetylene in the Franck-Condon gap between the X 2 Πu and A 2 Ag states of C2H2+.
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A local chemical environment effect in site-specific Auger spectra of ethyl trifluoroacetate.
Hiroshi Iwayama,Hiroshi Iwayama,Nicolas Sisourat,Nicolas Sisourat,Pascal Lablanquie,Pascal Lablanquie,Francis Penent,Francis Penent,Jérôme Palaudoux,Jérôme Palaudoux,Lidija Andric,Lidija Andric,John H. D. Eland,John H. D. Eland,Klemen Bučar,Matjaž Žitnik,Y. Velkov,Yasumasa Hikosaka,M. Nakano,Eiji Shigemasa,Eiji Shigemasa +20 more
TL;DR: It is found that all Auger decays populate mainly localized dicationic states, with the two holes located either on the same fluorine atom or on adjacent fluorine atoms.