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(Japanese) 【2025】廣瀬研究室から6名が卒業・修了しました【卒業式】

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Press released by Takezawa and Hirose – Large Amounts of Helium in the Earth’s Core?

Haruki Takezawa (M2 student) and Kei Hirose, in collaboration with Naoya Sakamoto (Hokkaido University) and Han Hsu (Academia Sinica), have released a joint press statement. They successfully synthesized iron-helium compounds and demonstrated their existence using theoretical calculations and mass spectrometry. This research have been published in the journal Physical Review Letters. The paper was selected …

第65回高圧討論会に研究室から6名参加します

2024年11月13日~2024年11月15日に岩手県で行われる 第65回高圧討論会に廣瀬研究室から6名が参加します。 以下が廣瀬研究室の学生による発表です。是非聞きに来てください! 2024/11/13 ポスター発表 14:00~15:30 1P42 メタンの高温高圧での相転移と液相密度 竹下 潤・彦坂 晃太郎・坂井 郁哉・廣瀬 敬 1P52 (Mg, Fe)O ferropericlaseの高温高圧下電気伝導度測定:下部マントルP-T条件における鉄のスピン転移の影響 平岡 大和・奥田 善之・廣瀬 敬・稲田 真子・彦坂 晃太郎 1P59 地球コアの組成・温度の解明に向けたFe-FeH系における融解実験 三田 修平・田川 翔・廣瀬 敬・幾田 凪 1P62 地球コア条件下におけるFe-C-H系の融解実験 堤 裕太郎・廣瀬 敬 1P63 Fe-Si-O系の融解実験と地球核でのケイ素・酸素の振る舞い 幾田 凪・廣瀬 敬 1P65 高温高圧下におけるH2O-NH3系の電気伝導度測定 稲田 真子・奥田 善之・彦坂 晃太郎・廣瀬 敬

(Japanese) AGU24に研究室から5名が参加して発表します

Sorry, this entry is only available in Japanese.

ABOUT

We know that the interior of the earth is actually divided into many layers, just like an onion. When you peel away these layers one at a time from the outside in the same way you would peel an onion’s skin, you finally come to the core. The mantle above the core is also divided into four layers, and by 1974 we had identified what the first three layers were made of. When it comes to the lowest layer, the fourth layer, however, there were all kinds of hypotheses but they all remained in the realm of conjecture. This is why I wanted to elucidate the true nature of this material that formed the fourth layer.

My own determination as a scientist to take up for the first time in the world experiments that nobody had ever attempted.

The most important things are enthusiasm, effort and a little bit of luck. Moreover, in everything you do, it is important to first meet the challenge without making up your mind at the outset that it is impossible. This simple way of looking at things will change your life significantly. If some of you hold the view that you may not be able to pursue the scientific path just because your grades aren’t good, get rid of such a silly notion immediately and instead pursue every challenge that comes your way. When you do that, the path to the future will naturally open up before you.


Kei Hirose

RESEARCH

We investigate the Earth’s deep interior materials and dynamics with ultra-high pressure and temperature experiments.

We know that the interior of the earth is actually divided into many layers, just like an onion. When you peel away these layers one at a time from the outside in the same way you would peel an onion’s skin, you finally come to the core. The mantle above the core is also divided into four layers, and by 1974 we had identified what the first three layers were made of. When it comes to the lowest layer, the fourth layer, however, there were all kinds of hypotheses but they all remained in the realm of conjecture. This is why I wanted to elucidate the true nature of this material that formed the fourth layer.

PostPerovskite

PostPerovskite phase was discovered in the condition of lowermost lower mantle (the red zone) (Murakami et. al. Science 2004)

Member

2024 卒業式写真


2017 members

2018 members

2019 members

2021 members

2022 members
PRINCIPAL RESEARCHER

廣瀬 敬(教授)


GRADUATE STUDENTS


幾田 凪(D3)
日本学術振興会特別研究員 DC1
IGPEES Fellowship

坂井 郁哉(D3)
日本学術振興会特別研究員 DC1 
IGPEES Fellowship

稲田 真子(D2)
IGPEES Fellowship

竹澤 春樹(D1)
日本学術振興会特別研究員 DC1
IGPEES Fellowship

三田 修平(D1)
日本学術振興会特別研究員 DC1
IGPEES Fellowship

竹下 潤(M2)
IGPEES Fellowship

平岡 大和(M2)

仙波 芽美(M1)

藤本 達也(M1)
UNDERGRADUATE STUDENTS
特別研究・卒業研究での所属:

OB/OG

日下部 真夕 M.S.
– 2019/03 修士課程修了
冨田 涼太 B.S.
– 2019/03 学部卒業
増田 滉己 B.S.
– 2019/03 修士より固体講座 井出研に進学
夏井 文凜 (研究生)
– 2020/03 修士より地震研に進学
長谷川 将弘 M.S.
– 2022/03 修士課程修了
奥田善之 (University of Hawaii at Manoa) Ph.D.
– PD from April 2022 to October 2023
栗田 直季 M.S.
– 2024/03 修士課程修了
Fu Suyu Ph.D. (Zhejiang University)
– JSPS PD from April 2022 to December 2024
平井 大源 B.S.
– 2025/03 修士より東京科学大学・地球生命研究所(ELSI)に進学