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
Nuclear Energy Conference & Expo (NECX)
September 8–11, 2025
Atlanta, GA|Atlanta Marriott Marquis
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
Jul 2025
Jan 2025
Latest Journal Issues
Nuclear Science and Engineering
August 2025
Nuclear Technology
Fusion Science and Technology
July 2025
Latest News
Hash Hashemian: Visionary leadership
As Dr. Hashem M. “Hash” Hashemian prepares to step into his term as President of the American Nuclear Society, he is clear that he wants to make the most of this unique moment.
A groundswell in public approval of nuclear is finding a home in growing governmental support that is backed by a tailwind of technological innovation. “Now is a good time to be in nuclear,” Hashemian said, as he explained the criticality of this moment and what he hoped to accomplish as president.
A. J. Deruytter, I. G. Schröder, J. A. Moore
Nuclear Science and Engineering | Volume 21 | Number 3 | March 1965 | Pages 325-328
Technical Paper | doi.org/10.13182/NSE65-A20036
Articles are hosted by Taylor and Francis Online.
A more precise value of the half-life of U235, for alpha emission, has been determined from an analysis of the alpha spectrum of natural uranium. The alpha spectrum was measured using solid-state detectors and the half-life obtained by a comparison of the intensity of the resolved portion of the U235 alpha spectrum with the intensities of the U234 and U238 alpha groups. The value obtained was T1/2 = (6.92± 0.09) × 108 years.
