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Journal Articles

Dynamical spin-to-charge conversion on the edge of quantum spin Hall insulator

Araki, Yasufumi; Misawa, Takahiro*; Nomura, Kentaro*

Physical Review Research (Internet), 2(2), p.023195_1 - 023195_11, 2020/05

JAEA Reports

The 3rd technological meeting of Tokai reprocessing plant

Maki, Akira; ; Taguchi, Katsuya; ; Shimizu, Ryo; Shoji, Kenji;

JNC-TN8410 2001-012, 185 Pages, 2001/04

JNC-TN8410-2001-012.pdf:9.61MB

"The third technological meeting of Tokai Reprocessing plant (TRP)" was held in JNFL Rokkasyo site on March 14$$^{th}$$, 2001. The technical meetings have been held in the past two times. The first one was about the present status and future plan of the TRP and second one was about safety evaluation work on the TRP. At this time, the meeting focussed on the corrosion experrience, in-service inspection technology and future maintenance plan. The report contains the proceedings, transparancies and questionnaires of the meeting are contained.

Oral presentation

Development of pinhole camera using OSL dosimeter for dose measurement

Usami, Hiroshi; Morishita, Yuki; Torii, Tatsuo; Sugita, Takeshi*; Kobayashi, Ikuo*

no journal, , 

no abstracts in English

Oral presentation

Oral presentation

Oral presentation

Dissipative spin pumping in two-dimensional quantum spin Hall insulator

Araki, Yasufumi; Misawa, Takahiro*; Nomura, Kentaro*

no journal, , 

Oral presentation

Dissipative spin pumping into two-dimensional quantum spin Hall insulator

Araki, Yasufumi; Misawa, Takahiro*; Nomura, Kentaro*

no journal, , 

Oral presentation

A Development of directional gamma-ray detector without shield

Kitayama, Yoshiharu; Terasaka, Yuta; Sato, Yuki; Torii, Tatsuo

no journal, , 

To ensure the safety of workers working at the Fukushima Daiichi Nuclear Power Station (FDNPS), a technology to measure the distribution of radioactive materials in the working environment is required. In order to develop a new gamma-ray imager that can compensate for the shortcomings of existing gamma-ray imagers, the feasibility of a gamma-ray detector that does not require a shield was examined by simulation. There are pinhole cameras and a Compton camera as a technology for imaging radioactive material distribution. Since the pinhole camera can identify the source direction in one event, the image reconstruction is easy, and there is a possibility that it can be applied to quantitative measurement. However, the total weight is too heavy to be suitable for remote measurement because a shield is required. Since the Compton camera does not require a shield, it is small and light, and remote measurement is possible. However, multiple events are required to estimate the source direction, and the cone drawn at that time becomes noise, and the S/N ratio of the image is lowered. We propose a novel gamma-ray imager such as a pinhole camera that does not require shields. In this study, we verified the principle of a directional gamma-ray detector that does not require a shield.

Oral presentation

Adiabatic and resonant spin pumping in two-dimensional quantum spin Hall insulator

Araki, Yasufumi; Misawa, Takahiro*; Nomura, Kentaro*

no journal, , 

Oral presentation

Spin-to-charge conversion on the edge of quantum spin Hall insulator

Araki, Yasufumi; Misawa, Takahiro*; Nomura, Kentaro*

no journal, , 

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