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The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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Nicholas Tsoulfanidis—ANS member since 1969
We welcome ANS members who have careered in the community to submit their own Nuclear Legacy stories, so that the personal history of nuclear power can be captured. For information on submitting your stories, contact nucnews@ans.org.
As an undergraduate I studied physics at the University of Athens. I entered the university in 1955 after successfully passing a national exam (came up fourth in a field of about 700 candidates). Upon graduation and finishing my mandatory two-year military service, the plan was to teach physics either in a public high school or as a tutor for a private for-profit institution, preparing high school students for the national exam.
Kazuhisa Yuki, Makoto Kawamoto, Munehito Hattori, Koichi Suzuki, Ken-ichi Sunamoto, Akio Sagara
Fusion Science and Technology | Volume 68 | Number 3 | October 2015 | Pages 715-719
Technical Note | Proceedings of TOFE-2014 | doi.org/10.13182/FST15-115
Articles are hosted by Taylor and Francis Online.
In this study, in order to enhance heat transfer performance of helium gas flow for divertor cooling, high thermal conductivity porous media that are copper-particles-sintered ones are introduced as the referential porous media. In order to predict the heat transfer performance of He gas impinging jet flow with the porous medium, nitrogen gas is used as the simulant of helium gas in the pressure range of 0.1 MPa to 0.8 MPa. With the porous medium, the particle introduced is highly size-adjusted one of 1000 μm in diameter and the porosity is almost 30 %. The maximum heat transfer performance is evaluated by numerically simulating temperature field in a heat transfer block based on the measured temperature data. The experiments prove that the heat transfer coefficient of N2 gas impinging jet flow with the porous medium is much higher than that of common impinging jet flow without the porous medium from the view point of not only flow velocity but also pumping power.