Takahiro Hiraki

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Specially appointed assistant professor

Okayama University

Japan

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About

Takahiro Hiraki is a specially appointed assistant professor at Okayama University in Japan. His research areas include the detection and characterization of thorium-229, VUV photon detection from cooled crystals, and advanced applications of transition-edge sensors in X-ray fluorescence measurements. He has authored several articles exploring topics such as radiative decay detection, diffusion modeling in silica aerogel, and estimation of radiative half-lives in nuclear physics.

Recent Grants

Grant: Close

原子核のレーザー分光に向けたトリウム229アイソマー状態からの脱励起光探索

Open Date: 2021-04-01

Close Date: 2024-03-01

Grant: Close

原子核時計の創生に向けたトリウム229原子核の研究

Open Date: 2021-01-01

Close Date:

Grant: Close

トリウム229極低励起エネルギー準位観測のための高密度トリウム標的の開発

Open Date: 2019-04-01

Close Date: 2021-03-01

Grant: Close

ニュートリノ質量分光に向けた多光子微弱遷移のレート増幅の研究

Open Date: 2019-04-01

Close Date: 2021-03-01

Grant: Close

トリウム229極低励起エネルギー準位観測のための高時間分解能X線検出器の開発

Open Date: 2017-04-01

Close Date: 2019-03-01

Articles (11)

Year:

2025

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2025

Interference free distribution and speciation analysis of uranium are achieved by using a transition-edge sensor for microbeam X-ray measurements in the hard X-ray region.

Year:

2024

Year:

2024

Year:

2024

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2023

Year:

2022

Year:

2022

Year:

2021

Year:

2021

Year:

2020

Collaborators (16)

Thorsten Schumm

TU Wien

AUSTRIA

Takahiro Hiraki

Research Interests

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About

Recent Grants

Articles (11)

Characterization of the thorium-229 defect structure in CaF<sub>2</sub> crystals

A method to detect the VUV photons from cooled 229Th:CaF2 crystals

Application of transition-edge sensors for micro-X-ray fluorescence measurements and micro-X-ray absorption near edge structure spectroscopy: a case study of uranium speciation in biotite obtained from a uranium mine

Experimental apparatus for detection of radiative decay of 229Th isomer from Th-doped CaF2

Controlling 229Th isomeric state population in a VUV transparent crystal

High-sensitive XANES analysis at Ce L2-edge for Ce in bauxites using transition-edge sensors: Implications for Ti-rich geological samples

Modeling the diffusion of muonium in silica aerogel and its application to a novel design of multi-layer target for thermal muon generation

Neutron tagging following atmospheric neutrino events in a water Cherenkov detector

Estimation of radiative half-life of Th229m by half-life measurement of other nuclear excited states in Th229

Absolute X-ray energy measurement using a high-accuracy angle encoder

Measurement of the muon neutrino charged-current single π+ production on hydrocarbon using the T2K off-axis near detector ND280

Collaborators (16)

Thorsten Schumm

Arthur Olin

Martin Pimon

takahiko masuda

Seungho Han

Celeste Pidcott

Takuma Okumura

Yuuki Nakano

Anna Dąbrowska

Shinya Yamada

Patrick Stowell

Nobumoto Nagasawa

Balint Radics

Lucas Nascimento Machado

Yoshio Takahashi

Shinji Okada

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