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Division Spotlight
Radiation Protection & Shielding
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.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
Standards Program
The Standards Committee is responsible for the development and maintenance of voluntary consensus standards that address the design, analysis, and operation of components, systems, and facilities related to the application of nuclear science and technology. Find out What’s New, check out the Standards Store, or Get Involved today!
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Fusion Science and Technology
February 2024
Latest News
Can hydrogen be the transportation fuel in an otherwise nuclear economy?
Let’s face it: The global economy should be powered primarily by nuclear power. And it probably will by the end of this century, with a still-significant assist from renewables and hydro. Once nuclear systems are dominant, the costs come down to where gas is now; and when carbon emissions are reduced to a small portion of their present state, it will become obvious that most other sources are only good in niche settings. I mean, why use small modular reactors to load-follow when they can just produce that power instead of buffering it?
Masayuki Yoshikawa, Kalsunori Ikeda, Yuuji Okamoto, Eiichiro Kawamori, Shinji Kobayashi, Yousuke Nakashima, Atsushi Mase, Teruji Cho, Naohiro Yamaguchi, Teruo Tamano, Kiyoshi Yatsu
Fusion Science and Technology | Volume 35 | Number 1 | January 1999 | Pages 273-277
Oral Presentations | doi.org/10.13182/FST99-A11963866
Articles are hosted by Taylor and Francis Online.
We have constructed a 2-dimensional Hα line-emission measurement system in order to study neutral hydrogen behavior. We can obtain 2-dimensional radial profiles of hydrogen density by considering a collisional-radiative model. We have also constructed space- and time-resolving spectrograph system in the range of vacuum ultraviolet (VUV). 15–105 nm. studying ion density profiles which directly relates to impurity transport. We measure both Hα line-emissions and VUV spectra from the hot ion mode plasmas in the GAMMA 10 for studying plasma particle confinement and impurity behavior. We found that both particle and energy confinement of the GAMMA 10 plasma was slightly improved during electron cyclotron resonant heating (ECRH) over that without ECRH. From the VUV measurement it is concluded that the impurity ions mainly came into the plasma during its formation phase.