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
Nuclear Installations Safety
Devoted specifically to the safety of nuclear installations and the health and safety of the public, this division seeks a better understanding of the role of safety in the design, construction and operation of nuclear installation facilities. The division also promotes engineering and scientific technology advancement associated with the safety of such facilities.
Meeting Spotlight
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!
Latest Magazine Issues
Apr 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
May 2024
Nuclear Technology
Fusion Science and Technology
Latest News
College students help develop waste-measuring device at Hanford
A partnership between Washington River Protection Solutions (WRPS) and Washington State University has resulted in the development of a device to measure radioactive and chemical tank waste at the Hanford Site. WRPS is the contractor at Hanford for the Department of Energy’s Office of Environmental Management.
Ph. Mertens, S. Brezinsek
Fusion Science and Technology | Volume 47 | Number 2 | February 2005 | Pages 161-171
Technical Paper | TEXTOR: Plasma-Wall Interactions | doi.org/10.13182/FST05-A697
Articles are hosted by Taylor and Francis Online.
The detailed physical mechanisms of hydrogen recycling are not yet completely clear. But, their understanding is required for the correct interpretation of spectroscopic measurements that are intended to provide us routinely with the total particle fluxes as well as with sound extrapolations to fusion devices of the next generation. Thanks to its large observation ports, TEXTOR provides ideal conditions for the combination of optical diagnostics based on completely different techniques, which can be applied simultaneously, with high resolving powers (/ = 2 × 104 to 2 × 105).It is shown how Zeeman spectroscopy on the Balmer-alpha transition (656.1 nm) and laser-induced fluorescence at Lyman-alpha (121.5 nm) both point to the presence of a substantial amount of cold hydrogen atoms (with kinetic energy <1 eV) in front of plasma-facing components, which is a phenomenon that, surprisingly, is largely independent of the local plasma parameters. This has led to a strong development of the spectroscopy of hydrogen molecules (Fulcher band), which may be a dominant source of atomic hydrogen in the plasma edge, and, as a final result, to an explanation for the phenomenological correction applied to the inverse photon efficiencies S/XB that are commonly used in the conversion of the photon fluxes into particle fluxes.