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.
Explore membership for yourself or for your organization.
Conference Spotlight
2026 ANS Annual Conference
May 31–June 3, 2026
Denver, CO|Sheraton Denver
Latest Magazine Issues
May 2026
Jan 2026
Latest Journal Issues
Nuclear Science and Engineering
June 2026
Nuclear Technology
April 2026
Fusion Science and Technology
Latest News
Nuclear Energy Strategy announced at CNA2026
At the Canadian Nuclear Association Conference (CNA2026) in Ottawa, Ontario, on April 29, Minister of Energy and Natural Resources Tim Hodgson announced that Natural Resources Canada (NRCan) is developing a new Nuclear Energy Strategy for the country. The strategy, which is slated to be released by the end of this year, will be based on four objectives: 1) enabling new nuclear builds across Canada, 2) being a global supplier and exporter of nuclear technology and services, 3) expanding uranium production and nuclear fuel opportunities, and 4) developing new Canadian nuclear innovations, including in both fission and fusion technologies.
W. W. CLENDENIN
Nuclear Science and Engineering | Volume 13 | Number 1 | May 1962 | Pages 46-53
Technical Paper | doi.org/10.13182/NSE62-A26127
Articles are hosted by Taylor and Francis Online.
Explicit expressions for the Marshak boundary conditions and vacuum gap conditions are developed through the P5 approximation. A blackness theory is developed for the accurate treatment of regions with high absorption of heavy elements. The relevant coefficients are expressed in terms of solutions of one velocity problems for which boundary conditions are given.
