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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
Properties of hollow molecules probed by single-photon double ionization.
Pascal Lablanquie,Pascal Lablanquie,Francis Penent,Francis Penent,Jérôme Palaudoux,Jérôme Palaudoux,Lidija Andric,Lidija Andric,P. Selles,P. Selles,Stéphane Carniato,Stéphane Carniato,Klemen Bučar,Matjaž Žitnik,Marko Huttula,John H. D. Eland,Eiji Shigemasa,Kouichi Soejima,Yasumasa Hikosaka,Isao H. Suzuki,M. Nakano,K. Ito +21 more
TL;DR: Detailed properties are presented such as the spectroscopy, formation, and decay dynamics of the N(2)(2+) K(-2) main and satellite states and the strong chemical shifts of double K holes on an oxygen atom in CO, CO2, and O2 molecules.
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Compact XFEL and AMO sciences: SACLA and SCSS
Makina Yabashi,H. Tanaka,T. Tanaka,Hiromitsu Tomizawa,Tadashi Togashi,Mitsuru Nagasono,T. Ishikawa,J. R. Harries,Yasumasa Hikosaka,Akiyoshi Hishikawa,Kiyonobu Nagaya,Norio Saito,Eiji Shigemasa,Kaoru Yamanouchi,Kiyoshi Ueda +14 more
TL;DR: The concept, design and performance of Japan's compact free-electron laser (FEL) facilities, the SPring-8 Compact SASE Source test accelerator (SCSS) and SPring 8 Angstrom Compact free electron LAser (SACLA), and their applications in mainly atomic, molecular and optical science are reviewed in this paper.
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Evidence of single-photon two-site core double ionization of C2H2 molecules.
Pascal Lablanquie,Tasko P. Grozdanov,M Zitnik,Stéphane Carniato,Stéphane Carniato,P. Selles,P. Selles,Lidija Andric,Lidija Andric,Jérôme Palaudoux,Jérôme Palaudoux,Francis Penent,Francis Penent,H. Iwayama,Eiji Shigemasa,Yasumasa Hikosaka,Kouichi Soejima,M. Nakano,Isao H. Suzuki,K. Ito +19 more
TL;DR: A simple theoretical model based on the knockout mechanism gives reasonable agreement with experiment on the formation in a single-photon transition of two core holes, each at a different carbon atom of the C2H2 molecule.
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Single Photon K − 2 and K − 1 K − 1 Double Core Ionization in C 2 H 2 n ( n = 1 – 3 ), CO, and N 2 as a Potential New Tool for Chemical Analysis
M. Nakano,Francis Penent,Francis Penent,Motomichi Tashiro,Tasko P. Grozdanov,Matjaž Žitnik,Stéphane Carniato,Stéphane Carniato,P. Selles,P. Selles,Lidija Andric,Lidija Andric,Pascal Lablanquie,Pascal Lablanquie,Jérôme Palaudoux,Jérôme Palaudoux,Eiji Shigemasa,H. Iwayama,Yasumasa Hikosaka,Kouichi Soejima,Isao H. Suzuki,Noriyuki Kouchi,K. Ito +22 more
TL;DR: The cross section variation for single photon K(-1)K (-1) double core ionization in the C(2)H(2n) sequence and in the isoelectronic C(1-3) hydrocarbon sequence, N (2) and CO molecules validates a knock-out mechanism in which a primary ionized 1s photoelectron ejects another 1s electron of the neighbor atom.
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Molecule frame photoelectron angular distributions from oriented methyl chloride and methyl fluoride molecules
TL;DR: In this paper, the angular distribution of photoelectron angular distributions for a band photoionization of CH3Cl and CH3F molecules whose spatial orientation is effectively fixed using an electron-ion recoil vector correlation technique is reported.