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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.
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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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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.
Om Prakash Joneja, Vijay R. Nargundkar, Tejen Kumar Basu
Fusion Science and Technology | Volume 12 | Number 1 | July 1987 | Pages 114-118
Technical Paper | Blanket Engineering | doi.org/10.13182/FST87-A25055
Articles are hosted by Taylor and Francis Online.
The experimentally measured value of 14-MeV neutron multiplication for 10-cm-thick lead in rectangular geometry agrees within 1% of the corresponding calculated value using the MORSE-E code with the Los Alamos National Laboratory 30-group cross-section set CLAW-IV, in P3 scattering approximation. This result is in direct contrast with Takahashi's measurements with lead spheres of 3-, 6-, 9-, and 12-cm radii, where the measured multiplication values are found to be ˜15% higher than the corresponding transport calculations performed using the ANISN and NITRAN codes with the ENDF/B-IV library. However, Monte Carlo calculations using the MORSE-E code with the CLAW-IV library, as well as those of Cheng et al, using the MCNP code with the ENDF/B-V library, agree very well with Takahashi's measurements. Thus, the real difference of leakage neutron multiplication in lead is not between the measurements and the calculations, as reported by Takahashi, but between Takahashi's and other calculations. It is found that by using lead as a neutron multiplier in practical fusion blankets, a 5 to 10% higher neutron multiplication can be obtained than with beryllium for identical configurations of the multiplier.
