Accès ouvert
2020
article
OpenAlex
R. U. Abbasi, M. Abe, Abu‐Zayyad T., M. Allen et autres
Evidence for a large-scale supergalactic cosmic-ray multiplet (arrival directions correlated with energy) structure is reported for ultra-high-energy cosmic-ray (UHECR) energies above 1019 eV using 7 years of data from the Telescope Array (TA) surface detector and updated to 10 years. Previous energy–position …
Accès ouvert
2019
article
OpenAlex
Abbasi R. U., M. Abe, Y. Uchihori, et al. et autres
The results on ultrahigh-energy cosmic rays (UHECR) mass composition obtained with the Telescope Array surface detector are presented. The analysis employs the Boosted Decision tree (BDT) multivariate analysis built upon 14 observables related to both the properties of the shower front and …
Accès ouvert
2018
article
OpenAlex
R. U. Abbasi, Abu‐Zayyad T., M. Allen, E. Barcikowski et autres
Bursts of gamma ray showers have been observed in coincidence with downward propagating negative leaders in lightning flashes by the Telescope Array Surface Detector (TASD). The TASD is a 700‐km2 cosmic ray observatory located in southwestern Utah, USA. In data collected between …
Accès ouvert
2016
conference-paper
OpenAlex
Hisashi Kitamura, Satoshi Kodaira, Yukio Uchihori, Takashi KITAMURA et autres
For real time radiation monitoring in space environment, active radiation dosimeters, A-DREAMS have been developed in QST-NIRS. They have silicon semi-conductor detectors and electric circuits to obtain LET distribution of space radiation from protons to iron ions in space radiation. A-DREAMS-2 (AD2), …
Accès ouvert
2016
article
OpenAlex
Yan Pan, Jiamei Fu, Teruaki Konishi, Alisa Kobayashi et autres
There is growing evidence suggest that low LET radiation can paradoxically promote tumor invasion and metastatic processes, however, there are limited reports concerning the effect of high LET radiation on the invasiveness and migration of tumor cells, and the molecular mechanism remain …
Accès ouvert
2015
article
OpenAlex
Shrinivasrao Kulkarni, J. Tammen, R. Elftmann, J. Steinhagen et autres
The Energetic Particle Detector (EPD) suite for ESA's Solar Orbiter will provide key measurements to addressparticle acceleration at and near the Sun. The EPD suite cinsists of four sensors (STEP, SIS, EPT, and HET) The University of Kiel in Germany is responsible …
Accès ouvert
2015
conference-paper
OpenAlex
Chen Dong, Teruaki Konishi, Wenzhi Tu, Alisa Kobayashi et autres
With the progress of international aeronautics and space undertakings, the risk of cosmic rays exposed to spacecraft and astronauts became a hot topic in the world. The space environment beyond low earth orbit (LEO) contains several types of ionizing radiation, in which …
Accès ouvert
2015
conference-paper
OpenAlex
Yukio Uchihori, Satoshi Kodaira, Hisashi Kitamura, Shingo Kobayashi et autres
Since 2004, we have had radiation measurements in space environment in collaboration with the Institute of Bio-Medical Problem (IBMP), Russia and German Aerospace Center (DLR), Germany. And, Japan Aerospace eXploration Agency (JAXA) also has supported our space experiments. The experiments were BRADOS, …
Accès ouvert
2015
conference-paper
OpenAlex
Narongchai Autsavapromporn, Ianik Plante, Liu Cui hua, Teruaki Konishi et autres
Purpose: Ionizing Radiation (IR)-induced bystander effects and genomic instability have important implication in radiotherapy and radioprotection. Their persistence in the progeny of normal cells may contribute to risk of long-term radiation-related health effect in human, including cancer. Hence, this study investigates the …
Accès ouvert
2015
conference-paper
OpenAlex
Shingo Kobayashi, Takayuki Shinomiya, Toru Yoshida, Yukio Uchihori et autres
A proto-type of a characteristic CXRC has been developed to visualize the contamination of Cs-134 and Cs-137 due to the FDNPS accident. It succeeded in reducing the weight of the camera body by measuring characteristic X-rays instead of gamma-rays. Currently, a sensor …
Accès ouvert
2014
article
OpenAlex
S. Burmeister, Tammen J., Kulkarni S. R., T. Berger et autres
In preparation of manned missions to the planet Mars and the radiation protection for the International Space Station several electronic dosimetry instruments are used in space. All these instruments have different abilities. This project is to characterize the differences between three of …
Accès ouvert
2014
article
OpenAlex
Nam U. W., Lee J, Kim H, Lim C. H. et autres
The goal of this experiment is verifying the performance of prototype Tissue Equivalent Proportional Counter (TEPC) developed for monitoring space radiation on ISS (International Space Station). The radiation field on ISS orbit is much different from ground environment. In space, human cells …