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Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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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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Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
The U.S. Million Person Study of Low-Dose-Rate Health Effects
There is a critical knowledge gap regarding the health consequences of exposure to radiation received gradually over time. While there is a plethora of studies on the risks of adverse outcomes from both acute and high-dose exposures, including the landmark study of atomic bomb survivors, these are not characteristic of the chronic exposure to low-dose radiation encountered in occupational and public settings. In addition, smaller cohorts have limited numbers leading to reduced statistical power.
A.A. Ivanov, S.V. Murakhtin
Fusion Science and Technology | Volume 39 | Number 1 | January 2001 | Pages 209-212
Poster Presentations | doi.org/10.13182/FST01-A11963443
Articles are hosted by Taylor and Francis Online.
The neutral beam scattering diagnostic1 has been developed to measure the ion temperature of the target plasma in the Gas-Dynamic Trap (GDT) experiment. In the GDT, the target plasma density was about 1014 cm−3, the ion temperature was estimated from diamagnetic loops data combined with electron temperature obtained by Thompson scattering to be maximally ≈100 eV. The developed special diagnostic based on small angle scattering of neutral beam particles enables to perform more accurate measurements of the ion temperature. The beam of helium atoms is injected at the angle of 8° to the observation direction. The injection energy is 10 keV, the total equivalent beam current is 1A. The neutral particles are scattered on the plasma ions and enter the 45″ electrostatic analyzer. The ion temperature was inferred from the measured width of the energy distribution function of the scattered particles
This diagnostic was applied to measure temporal variation of the ion temperature during neutral beam heating. The electron temperature was simultaneously measured by Thomson scattering of a ruby laser light. The data will be used to estimate the energy balance of the ion component of the target plasma during neutral beam heating.
