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Division Spotlight
Isotopes & Radiation
Members are devoted to applying nuclear science and engineering technologies involving isotopes, radiation applications, and associated equipment in scientific research, development, and industrial processes. Their interests lie primarily in education, industrial uses, biology, medicine, and health physics. Division committees include Analytical Applications of Isotopes and Radiation, Biology and Medicine, Radiation Applications, Radiation Sources and Detection, and Thermal Power Sources.
Meeting Spotlight
Conference on Nuclear Training and Education: A Biennial International Forum (CONTE 2025)
February 3–6, 2025
Amelia Island, FL|Omni Amelia Island Resort
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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Nuclear Science and Engineering
February 2025
Nuclear Technology
Fusion Science and Technology
Latest News
A more open future for nuclear research
A growing number of institutional, national, and funder mandates are requiring researchers to make their published work immediately publicly accessible, through either open repositories or open access (OA) publications. In addition, both private and public funders are developing policies, such as those from the Office of Science and Technology Policy and the European Commission, that ask researchers to make publicly available at the time of publication as much of their underlying data and other materials as possible. These, combined with movement in the scientific community toward embracing open science principles (seen, for example, in the dramatic rise of preprint servers like arXiv), demonstrate a need for a different kind of publishing outlet.
Y. Yasaka, A. Maruyama, N. Takano
Fusion Science and Technology | Volume 43 | Number 1 | January 2003 | Pages 44-50
Overview | doi.org/10.13182/FST03-A11963561
Articles are hosted by Taylor and Francis Online.
MHD stability and ion cyclotron heating are investigated in the axisymmetric tandem mirror HIEI, which is a three-cell device with a typical magnetic field strength of 0.05-0.3-0.1-0.3 T, from central cell midplane to outer throat of plug cells. A magnetic divertor configuration introduced in the central cell provides magnetic nulls and stabilizes MHD activities by shorting-out the charge separation in the azimuthal direction. The density fluctuation of m = 1 flute mode is observed to decrease significantly by using the divertor. The stabilization effect of the divertor is stronger as the nulls are located at inner radius. It is observed from the cross correlation measurement that the electrons exhibit E × B motion in unstable plasmas, while they tend to follow the Boltzmann relation in the divertor-stabilized plasmas. The second harmonic ion cyclotron heating is also investigated. In the divertor configuration where the magnetic field strength varies significantly in radial direction, the ICRF waves have a large transverse gradient in amplitudes to enhance the finite Larmor radius effect. The wave propagation and damping are investigated theoretically and experimentally.
