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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.
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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
Latest News
Zap Energy hits 37-million-degree electron temperatures in compact fusion device
Zap Energy announced April 23 that it has reached 1-3 keV plasma electron temperatures—roughly the equivalent of 11 to 37 million degrees Celsius—using its sheared-flow-stabilized Z-pinch approach to fusion. Reaching temperatures above that of the sun’s core (which is 10 million degrees Celsius temperature) is just one hurdle required before any fusion confinement concept can realistically pursue net gain and fusion energy.
Mervi J. Mantsinen, R. Rainer E. Salomaa
Fusion Science and Technology | Volume 33 | Number 3 | May 1998 | Pages 237-251
Technical Paper | doi.org/10.13182/FST98-A30
Articles are hosted by Taylor and Francis Online.
A time-dependent, volume-averaged particle and power balance code is used to investigate reactivity transients during tokamak startup and after sudden changes in the plasma confinement, fueling rates, and impurity concentrations in deuterium-tritium (D-T) and D-3He fusion reactors. For a given H-mode factor fH relative to the ITER89-P scaling law, a very narrow range of = part*/E values, limited by quenching of the fusion burn due to ash accumulation and by exceeding operational limits, is found to sustain steady fusion burn. The dependence of the large power overshoot taking place shortly after ignition due to ash accumulation on the assumed and fH is examined. To alleviate the excessive external heating power requirements for D-3He-reactor startup, schemes utilizing D-T fusion reactions are considered. Because of power transients of several hundreds of megawatts in reactors operating at a gigawatt level of fusion power, triggered by very small changes in the plasma confinement (