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
September 2025
Nuclear Technology
August 2025
Fusion Science and Technology
Latest News
Remembering ANS member Gil Brown
Brown
The nuclear community is mourning the loss of Gilbert Brown, who passed away on July 11 at the age of 77 following a battle with cancer.
Brown, an American Nuclear Society Fellow and an ANS member for nearly 50 years, joined the faculty at Lowell Technological Institute—now the University of Massachusetts–Lowell—in 1973 and remained there for the rest of his career. He eventually became director of the UMass Lowell nuclear engineering program. After his retirement, he remained an emeritus professor at the university.
Sukesh Aghara, chair of the Nuclear Engineering Department Heads Organization, noted in an email to NEDHO members and others that “Gil was a relentless advocate for nuclear energy and a deeply respected member of our professional community. He was also a kind and generous friend—and one of the reasons I ended up at UMass Lowell. He served the university with great dedication. . . . Within NEDHO, Gil was a steady presence and served for many years as our treasurer. His contributions to nuclear engineering education and to this community will be dearly missed.”
Robert R. Peterson
Fusion Science and Technology | Volume 13 | Number 2 | February 1988 | Pages 279-289
Technical Paper | Heavy-Ion Fusion | doi.org/10.13182/FST88-A25105
Articles are hosted by Taylor and Francis Online.
The limits on the cavity gas density required for beam propagation and condensation times for material vaporized by target explosions can determine the maximum repetition rate of heavy-ion fusion (HIF) driven reactors. If the ions are ballistically focused onto the target, the cavity gas must have a density below roughly 3 × 1012cm-3 at the time of propagation; other propagation schemes may allow densities as high as 1 Torr or more. In some reactor designs, several kilograms of material may be vaporized from the target chamber walls by target-generated X rays, raising the average density in the cavity to 3 × 1018 cm-3 or more. A one-dimensional combined radiation hydrodynamics and vaporization and condensation computer code has been used to simulate the vaporization and condensation of material in the target chambers of HIF reactors. Repetition rates in excess of 1 Hz are possible in the three types of target chambers studied. Means of increasing allowable repetition rates are discussed.
