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
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
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
DOE-EM awards $37.5M to Vanderbilt University for nuclear cleanup support
The Department of Energy’s Office of Environmental Management announced on January 16 that it has awarded a noncompetitive financial assistance agreement worth $37.5 million to Vanderbilt University in Nashville, Tenn., to aid the department’s mission of cleaning up legacy nuclear waste.
R. C. Doerner, R. J. Armani, W. E. Zagotta, F. H. Martens
Nuclear Science and Engineering | Volume 9 | Number 2 | February 1961 | Pages 221-240
doi.org/10.13182/NSE61-A15606
Articles are hosted by Taylor and Francis Online.
Previous calculations and measurements of the age of fission neutrons in water are tabulated with special emphasis on those aspects of the experiments which may require corrections or lead to errors. A plane-source geometry is described and data taken in this geometry are interpreted in terms of these corrections. The measured second moments of the distributions from 18, 24, and 30 in. sources are corrected for foil and source plate mass effects. A geometric correction is then applied to obtain the age of fission neutrons in water as 27.86 ± 0.10 cm2.
