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
Robotics & Remote Systems
The Mission of the Robotics and Remote Systems Division is to promote the development and application of immersive simulation, robotics, and remote systems for hazardous environments for the purpose of reducing hazardous exposure to individuals, reducing environmental hazards and reducing the cost of performing work.
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.
Koichi Sekimizu, Kazuo Monta
Nuclear Science and Engineering | Volume 54 | Number 4 | August 1974 | Pages 474-481
Technical Note | doi.org/10.13182/NSE74-A23445
Articles are hosted by Taylor and Francis Online.
A control-rod optimization problem is formulated for a one-dimensional multiregion reactor; that is, the end-of-life state surfaces are formulated in the N-dimensional bumup space, which is an N-dimensional Euclidean space, with its axis corresponding to the macroscopic fission cross section of each region. Solutions for a three-region reactor model are derived by using the principle of optimality. The investigation of these solutions reveals the existence of unique and nonunique solutions, depending on the relationship of end-of-life state surfaces. The relationship between two kinds of solution is discussed.
