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Showing papers by "Hiroyuki A. Sakaue published in 2018"

Journal Article•DOI•
Properties of Kilonovae from Dynamical and Post-merger Ejecta of Neutron Star Mergers

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Masaomi Tanaka1, Daiji Kato2, Daiji Kato1, Gediminas Gaigalas3, P. Rynkun3, Laima Radžiūtė3, Shinya Wanajo4, Yuichiro Sekiguchi5, Nobuyuki Nakamura6, Hajime Tanuma7, Izumi Murakami1, Hiroyuki A. Sakaue1 •
National Institutes of Natural Sciences, Japan1, Kyushu University2, Vilnius University3, Sophia University4, Toho University5, University of Electro-Communications6, Tokyo Metropolitan University7
12 Jan 2018-The Astrophysical Journal

137 citations

Journal Article•DOI•
Theoretical investigation on the soft X-ray spectrum of the highly-charged W 54+ ions

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Xiaobin Ding1, Jiaoxia Yang1, Fumihiro Koike2, Izumi Murakami3, Daiji Kato4, Daiji Kato3, Hiroyuki A. Sakaue3, Nobuyuki Nakamura5, Chenzhong Dong1 •
Northwest Normal University1, Sophia University2, National Institutes of Natural Sciences, Japan3, Kyushu University4, University of Electro-Communications5
01 Jan 2018-Journal of Quantitative Spectroscopy & Radiative Transfer
TL;DR: In this article, a detailed level collisional-radiative model of the E1 transition spectrum of Ca-like W54+ ion has been constructed using relativistic configuration interaction (RCI) method with the implementation of Flexible Atomic Code (FAC).
Abstract: A detailed level collisional-radiative model of the E1 transition spectrum of Ca-like W54+ ion has been constructed. All the necessary atomic data has been calculated by relativistic configuration interaction (RCI) method with the implementation of Flexible Atomic Code (FAC). The results are in reasonable agreement with the available experimental and previous theoretical data. The synthetic spectrum has explained the EBIT spectrum in 29.5–32.5 A , while several new strong transitions has been predicted to be observed in 18.5–19.6 A for the future EBIT experiment with electron density ne = 1012 cm−3 and electron beam energy Ee = 18.2 keV.

12 citations

Journal Article•DOI•
Energy levels, lifetimes and radiative data of W LV

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Xiaobin Ding1, Rui Sun1, Fumihiro Koike2, Izumi Murakami, Daiji Kato, Hiroyuki A. Sakaue, Nobuyuki Nakamura3, Chenzhong Dong1 •
Northwest Normal University1, Sophia University2, University of Electro-Communications3
01 Jan 2018-Atomic Data and Nuclear Data Tables
TL;DR: In this paper, the energy levels, radiative data and lifetimes of tungsten Ca-like ion (W LV) were derived by using multi-configuration Dirac-Fock (MCDF) method.

6 citations

Journal Article•DOI•
Collisional radiative model for the M1 transition spectrum of the highly-charged W 54+ ions

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Xiaobin Ding1, Xiaobin Ding2, Jiaoxia Yang2, Linfan Zhu1, Fumihiro Koike3, Izumi Murakami4, Daiji Kato5, Daiji Kato4, Hiroyuki A. Sakaue4, Nobuyuki Nakamura6, Chenzhong Dong2 •
University of Science and Technology of China1, Northwest Normal University2, Sophia University3, National Institutes of Natural Sciences, Japan4, Kyushu University5, University of Electro-Communications6
31 Aug 2018-Physics Letters A
TL;DR: In this article, a detailed-level collisional-radiative model for the M1 transition spectrum of the Ca-like W54+ ion as observed in an electron beam ion trap (EBIT) was constructed based on atomic data calculated by the relativistic configuration interaction method and distorted wave theory.

5 citations