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
Mathematics & Computation
Division members promote the advancement of mathematical and computational methods for solving problems arising in all disciplines encompassed by the Society. They place particular emphasis on numerical techniques for efficient computer applications to aid in the dissemination, integration, and proper use of computer codes, including preparation of computational benchmark and development of standards for computing practices, and to encourage the development on new computer codes and broaden their use.
Meeting Spotlight
International Conference on Mathematics and Computational Methods Applied to Nuclear Science and Engineering (M&C 2025)
April 27–30, 2025
Denver, CO|The Westin Denver Downtown
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 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
June 2025
Nuclear Technology
Fusion Science and Technology
May 2025
Latest News
Ariz. governor vetoes “fast track” bill for nuclear
Gov. Katie Hobbs put the brakes on legislation that would have eliminated some of Arizona’s regulations and oversight of small modular reactors, technology that is largely under consideration by data centers and heavy industrial power users.
Masatoshi Fujishiro
Nuclear Science and Engineering | Volume 52 | Number 4 | December 1973 | Pages 474-481
Technical Paper | doi.org/10.13182/NSE73-A23315
Articles are hosted by Taylor and Francis Online.
The intensities of the weak 2158- and 2505-keV gamma rays following the β‾ decay of 60Co were measured by applying the photonuclear reactions 9Be(γ,n) and 2D(γ,n). The results obtained were I(2158) = (2.0 ±1.3) ×10-5 I(2505) = (0.9 ± 0.7) × 10-7 photons per decay of 60Co. The present result for I(2158) agrees with other data found in the literature within stated errors, whereas that for I(2505) is significantly smaller than previous estimates. From the present value of I(2158), the rate B2 and logarithmic comparative half-life log f2t2 of the second-forbidden unique β‾ decay, which is intimately related to this intensity, was estimated as B2 ≤ (15.0 ± 9.8) × 10-3% and log f2t2 ≥ , respectively.