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
Radiation Protection & Shielding
The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
Meeting Spotlight
2024 ANS Annual Conference
June 16–19, 2024
Las Vegas, NV|Mandalay Bay Resort and Casino
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
May 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
June 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Strong performances across the board
Craig Piercycpiercy@ans.org
Another year, another stellar performance by America’s nuclear plants. We’ve come to expect high capacity factors, and it’s a credit to the men and women of the profession. They’ve made routine something that was unimaginable not so long ago.
The decadal challenge for the nuclear enterprise now is to maintain this high level of operational excellence for the current fleet, while at the same time ushering in a new generation of technologies at scale. It will be a big job—but one that seems more and more likely with each passing day.
Hideo Hirayama
Nuclear Science and Engineering | Volume 124 | Number 2 | October 1996 | Pages 258-270
Technical Paper | doi.org/10.13182/NSE96-A28576
Articles are hosted by Taylor and Francis Online.
The effects of using different photon cross-section libraries and energy-absorption coefficients on the gamma-ray point isotropic exposure buildup factors up to 40 mean free path (mfp) were studied using the EGS4 Monte Carlo code for water‚ iron, and lead from the 0.1- to 10-MeV energy regions., Differences due to the cross sections used exist‚ but are small‚ < 10%, except those for lead at 0.1 and 10 MeV. The differences in the case of lead increase along with an increase in the depth and are nearly 30% at 40 mfp depth. The effects of using different energy-absorption coefficients of air are <2%