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 Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
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
Jan 2025
Jul 2024
Latest Journal Issues
Nuclear Science and Engineering
February 2025
Nuclear Technology
Fusion Science and Technology
Latest News
How to talk about nuclear
In your career as a professional in the nuclear community, chances are you will, at some point, be asked (or volunteer) to talk to at least one layperson about the technology you know and love. You might even be asked to present to a whole group of nonnuclear folks, perhaps as a pitch to some company tangential to your company’s business. So, without further ado, let me give you some pointers on the best way to approach this important and surprisingly complicated task.
Alvin Shapiro, Warren F. Stubbins
Nuclear Science and Engineering | Volume 45 | Number 1 | July 1971 | Pages 47-51
Technical Paper | doi.org/10.13182/NSE71-A20344
Articles are hosted by Taylor and Francis Online.
The photofission yields of 238Pu and 239Pu were measured up to 11.5 MeV with the University of Cincinnati betatron. Corona discharge spark detectors were used to detect the fission fragments from isotopically pure foils in the presence of the very high alpha-particle activity of the plutonium. The photofission cross sections were deduced from the yields by both the Penfold-Leiss procedure and Cook's least-structure analysis. They show the onset of the giant resonance. The cross section for 238Pu at 7.5 MeV is 28 ± 5 mb and 21 ± 4 mb for 239Pu. At 11.0 MeV, the corresponding values were 303 ± 94 mb and 221 ± 69 mb. Between 7.5 and 11 MeV, the 238Pu photofission cross section is ∼35% larger than that for 239Pu.
