ANS is committed to advancing, fostering, and promoting the development and application of nuclear sciences and technologies to benefit society.
Explore the many uses for nuclear science and its impact on energy, the environment, healthcare, food, and more.
Division Spotlight
Aerospace Nuclear Science & Technology
Organized to promote the advancement of knowledge in the use of nuclear science and technologies in the aerospace application. Specialized nuclear-based technologies and applications are needed to advance the state-of-the-art in aerospace design, engineering and operations to explore planetary bodies in our solar system and beyond, plus enhance the safety of air travel, especially high speed air travel. Areas of interest will include but are not limited to the creation of nuclear-based power and propulsion systems, multifunctional materials to protect humans and electronic components from atmospheric, space, and nuclear power system radiation, human factor strategies for the safety and reliable operation of nuclear power and propulsion plants by non-specialized personnel and more.
Meeting Spotlight
2025 ANS Annual Conference
June 15–18, 2025
Chicago, IL|Chicago Marriott Downtown
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!
Latest Magazine Issues
Jun 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
July 2025
Nuclear Technology
Fusion Science and Technology
Latest News
Smarter waste strategies: Helping deliver on the promise of advanced nuclear
At COP28, held in Dubai in 2023, a clear consensus emerged: Nuclear energy must be a cornerstone of the global clean energy transition. With electricity demand projected to soar as we decarbonize not just power but also industry, transport, and heat, the case for new nuclear is compelling. More than 20 countries committed to tripling global nuclear capacity by 2050. In the United States alone, the Department of Energy forecasts that the country’s current nuclear capacity could more than triple, adding 200 GW of new nuclear to the existing 95 GW by mid-century.
V. Erckmann, G. Janzen, W. Kasparek, G. Müller, P. G. Schüller, K. Schwörer, M. Thumm, R. Wilhelm, W VII-A Team
Fusion Science and Technology | Volume 7 | Number 2 | March 1985 | Pages 275-282
Technical Paper | doi.org/10.13182/FST85-A24543
Articles are hosted by Taylor and Francis Online.
Plasma buildup and heating of ohmically heated currentless plasmas by electron cyclotron resonance heating (28 GHz, 200 kW, 40 ms) were investigated in the WENDELSTEIN VII-A stellarator. Two different kinds of wave launching were examined in detail. First, the gyrotron mode mixture, containing 50% of the total power in ordinary (O)-mode and 50% in extraordinary (X)-mode polarization, was irradiated from the low-field side. Then a linearly polarized wave in O-mode polarization was launched from the low-field side, the nonabsorbed fraction being reflected back to the plasma from the high-field side in X-mode polarization. An increase of the central electron temperature from 0.6 keV (first case) to 1.2 keV (second case) was observed, which is explained as being due to the narrow power deposition profile in the latter case rather than due to the slight increase of the heating efficiency from 40 to 50%. Strong evidence of parametric decay of the X-mode fraction is found. Transport calculations using neoclassical plateau coefficients for the electron heat conduction including ripple losses fit well with the measured profiles, if enhanced losses at the plasma edge are introduced.
