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
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!
Latest Magazine Issues
Dec 2024
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
January 2025
Nuclear Technology
Fusion Science and Technology
Latest News
Christmas Night
Twas the night before Christmas when all through the houseNo electrons were flowing through even my mouse.
All devices were plugged in by the chimney with careWith the hope that St. Nikola Tesla would share.
W. Brian Clarke, Stanley J. Bos, Brian M. Oliver
Fusion Science and Technology | Volume 43 | Number 2 | March 2003 | Pages 250-255
Technical Note | doi.org/10.13182/FST03-A264
Articles are hosted by Taylor and Francis Online.
Measurements of He, 3He/4He, Ne and 13 other components (H2, HD, D2, CH4, H2O, HDO, D2O, N2, CO, C2H6, O2, Ar, and CO2) in four samples of gas from SRI International (SRI) are reported. Three samples were collected from SRI Case-type stainless steel cells containing ~10 g of Pd/C catalyst initially loaded with ~3 atm D2 at ~200°C, and the fourth sample (not identified) was stated to be a control. Case and the SRI researchers have claimed to observe 4He in concentrations of ~100 parts per million (ppm) and up to 11 ppm, respectively, produced in these cells via the fusion reaction D + D = 4He + 23.8 MeV. Others found no evidence for 4He addition that cannot be readily explained by leaks from the atmosphere into the SRI cells. One sample appears to be identical in composition to air, and the other three have been seriously affected by leak(s) into and from the SRI cells. The rare gas "forensic" evidence includes 3He/4He ratios and He and Ne concentrations that are almost identical to air values. The samples also show high N2 (a primary indicator of air), low O2, and high CO and CO2 due to reaction of incoming atmospheric O2 with C in the catalyst. In two samples, the original D2 (or H2) has almost completely disappeared by outflow through the leak(s). These results have obvious implications concerning the validity of the excess 4He concentrations claimed by Case and the SRI researchers.