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
Nuclear Nonproliferation Policy
The mission of the Nuclear Nonproliferation Policy Division (NNPD) is to promote the peaceful use of nuclear technology while simultaneously preventing the diversion and misuse of nuclear material and technology through appropriate safeguards and security, and promotion of nuclear nonproliferation policies. To achieve this mission, the objectives of the NNPD are to: Promote policy that discourages the proliferation of nuclear technology and material to inappropriate entities. Provide information to ANS members, the technical community at large, opinion leaders, and decision makers to improve their understanding of nuclear nonproliferation issues. Become a recognized technical resource on nuclear nonproliferation, safeguards, and security issues. Serve as the integration and coordination body for nuclear nonproliferation activities for the ANS. Work cooperatively with other ANS divisions to achieve these objective nonproliferation policies.
Meeting Spotlight
Utility Working Conference and Vendor Technology Expo (UWC 2024)
August 4–7, 2024
Marco Island, FL|JW Marriott Marco Island
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 2024
Jan 2024
Latest Journal Issues
Nuclear Science and Engineering
August 2024
Nuclear Technology
Fusion Science and Technology
Latest News
Four million nuclear jobs by 2050: Who will do them?
Industry leaders from around the globe met this month to discuss the talent development that will be necessary for the long-term success of the nuclear industry.
The International Conference on Nuclear Knowledge Management and Human Resources Development, hosted by the International Atomic Energy Agency, was held in Vienna earlier this month. Discussed there was the agency’s forecast for nuclear capacity to more than double—or hopefully triple—by 2050 and the requirement of more than four million professionals to support the industry.
Thomas E. Blue
Nuclear Technology | Volume 82 | Number 3 | September 1988 | Pages 304-310
Technical Paper | Radioisotopes and Isotope Separation | doi.org/10.13182/NT88-A34131
Articles are hosted by Taylor and Francis Online.
An accelerator-based 145Sm production method is described. A target of a natural samarium compound, for example, Sm2O3, is bombarded with protons in the 70-MeV energy range. The resulting nuclear reactions produce 145Eu as well as other europium isotopes that are chemically separated from the samarium target. If this separation is performed more than 15 min following the irradiation, then only 145Eu and europium isotopes with half-lives longer than the halflife of 145Eu remain in the europium fraction. Following the first separation, the separated europium undergoes radioactive decay until most of the 145Eu in the europium fraction has decayed into 145Sm. Then, a second chemical separation is performed in which the 145Sm is removed from the long-lived europium radioactivities that accompanied the 145Eu in the first separation. The result of the two chemical separations is a high-specific-activity 145Sm product with contaminations from europium radioactivities that depend on the efficiencies of the separations and the time of their performance. The 145Sm yield and purity for this production method for a high-current accelerator are compared with the yield and purity of 145Sm from a reactor-based production method for a high-flux reactor. The yield of 145Sm/day for the accelerator-based production method exceeds the yield per day for the reactor-based production method for reactor targets less than ∼1 g. For modest ratios of europium-to-samarium separation efficiencies for the first separation (∼10), the specific activity of the accelerator-produced 145Sm exceeds the specific activity of the reactor-produced 145Sm for reactor irradiation times <2 days. However, the activity of the 145Sm contaminants is larger for the accelerator-produced 145Sm than for the reactor-produced 145Sm, unless the ratio of europiumto-samarium separation efficiencies for the second separation is greater than ∼5000.
