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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.
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2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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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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Latest News
NWMO to select Canadian repository site this year
Canada’s Nuclear Waste Management Organization, a not-for-profit organization responsible for the long-term management of the country’s intermediate- and high-level radioactive waste, is set to select a site for a deep geologic repository by the end of the year.
M. E. Abdel-Kader, M. A. Abd Al-Halim
Fusion Science and Technology | Volume 76 | Number 6 | August 2020 | Pages 758-769
Technical Paper | doi.org/10.1080/15361055.2020.1777675
Articles are hosted by Taylor and Francis Online.
The Hemisphere Plasma Focus (HSPF) device is a new construction of plasma focus (PF) devices wherein the discharge takes place between the inner and outer concentric hemispherical electrodes with total energy up to 3.4 kJ. The pinch effect appears in the shape of a sharp crevice in the discharge current signal. HSPF is simulated by utilizing the Snowplow Model depending on the circuit equation incorporated with the momentum equation. Some modifications were added to the model to improve the theoretical data in order to be consistent with the experimental results. The code includes a rundown phase starting from the equator point toward the antipodal point and the reflected shock phase at the axis. The model results are compared with experimental results, and the effect of discharge parameters such as the discharge voltage and helium gas pressure on the plasma parameters is studied. The total system inductance is about 285 nH with a resistance of about 23 mΩ. Furthermore, the plasma inductance has a maximum value at the pinch time, which is decreased by increasing the charging voltage or decreasing the gas pressure. The mass factor in the HSPF device is found to be relatively low compared to that of the coaxial PF device. The shock front and current sheath velocities are increased by increasing the drive factor while the pinch time is decreased. Also, the minimum pinch radius and the plasma inductance have a reverse trend as a function of the drive factor.