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.
Fuel Cycle & Waste Management
Devoted to all aspects of the nuclear fuel cycle including waste management, worldwide. Division specific areas of interest and involvement include uranium conversion and enrichment; fuel fabrication, management (in-core and ex-core) and recycle; transportation; safeguards; high-level, low-level and mixed waste management and disposal; public policy and program management; decontamination and decommissioning environmental restoration; and excess weapons materials disposition.
2021 Student Conference
April 8–10, 2021
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
Latest Journal Issues
Nuclear Science and Engineering
Fusion Science and Technology
Trump leaves space nuclear policy executive order for Biden team
A hot fire test of the core stage for NASA’s Space Launch System rocket at Stennis Space Center in Mississippi was not completed as planned. The SLS is the vehicle meant to propel a crewed mission to the moon in 2024. Source: NASA Television
Among the executive orders President Trump issued during his last weeks in office was “Promoting Small Modular Reactors for National Defense and Space Exploration,” which builds on the Space Policy Directives published during his term. The order, issued on January 12, calls for actions within the next six months by NASA and the Department of Defense (DOD), together with the Department of Energy and other federal entities. Whether the Biden administration will retain some, all, or none of the specific goals of the Trump administration’s space nuclear policy remains to be seen, but one thing is very clear: If deep space exploration remains a priority, nuclear-powered and -propelled spacecraft will be needed.
The prospects for near-term deployment of nuclear propulsion and power systems in space improved during Trump’s presidency. However, Trump left office days after a hot fire test of NASA’s Space Launch System (SLS) rocket did not go as planned. The SLS rocket is meant to propel crewed missions to the moon in 2024 and to enable a series of long-duration lunar missions that could be powered by small lunar reactor installations. The test on January 16 of four engines that were supposed to fire for over eight minutes was automatically aborted after one minute, casting some doubt that a planned November 2021 Artemis I mission can go ahead on schedule.
R. R. Paguio, D. J. Jasion, K. M. Saito, M. E. Schoff, R. M. Jimenez, J. F. Hund, M. P. Farrell
Fusion Science and Technology | Volume 63 | Number 2 | March-April 2013 | Pages 268-273
Technical Paper | Selected papers from 20th Target Fabrication Meeting, May 20-24, 2012, Santa Fe, NM, Guest Editor: Robert C. Cook | dx.doi.org/10.13182/FST63-2-268
Articles are hosted by Taylor and Francis Online.
Deuterated polyethylene films as thin as 50 m have been produced using a four-post heated press method. These films are then cut into the desired shape (foil) and are used for the magnetic recoil spectrometer (MRS). The MRS is a diagnostic tool for inertial confinement fusion (ICF) experiments at the National Ignition Facility (NIF) and at the OMEGA Laser Facility at the University of Rochester Laboratory for Laser Energetics. The films produced by this method are more uniform and have fewer defects than foils prepared by previous methods. Whereas traditional films had a thickness limitation of 100 m, this new heat pressing method allows the fabrication of 50-m films, which is the desired thickness for MRS foils. The foils produced and characterized by General Atomics have decreased the neutron measurement uncertainty of the MRS instrument by a factor of 2 compared to the previous foils. This work has also been extended to fabricate thin polymer films and films with sinusoidal patterns from other polymeric materials for ICF experiments. This paper will discuss the heat pressing technique used in the fabrication of these films for the NIF and OMEGA MRS as well as other patterned and flat polymer films. The morphology of these foils and the advantages that they provide will also be discussed.