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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.
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Albuquerque, NM|The University of New Mexico
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Latest News
First astatine-labeled compound shipped in the U.S.
The Department of Energy’s National Isotope Development Center (NIDC) on March 31 announced the successful long-distance shipment in the United States of a biologically active compound labeled with the medical radioisotope astatine-211 (At-211). Because previous shipments have included only the “bare” isotope, the NIDC has described the development as “unleashing medical innovation.”
Yunmin Yang, Naoto Sekimura, Hiroaki Abe
Fusion Science and Technology | Volume 44 | Number 2 | September 2003 | Pages 460-464
Technical Paper | Fusion Energy - Fusion Materials | doi.org/10.13182/FST03-A378
Articles are hosted by Taylor and Francis Online.
In this study, MD simulations of compression process were carried for copper lattices with an interstitial type Frank loops. Slipping of prismatic dislocations was not observed for loops whose size ranges from 0.5nm to 3.6nm. For loops with a size of 0.5nm, atoms in loops were squeezed into the neighboring layer to form crowdion bundles along <110> directions, and then swept away by further deformation. For loops larger than 2nm, the movements of atoms in faulted layer were not homogeneously in one direction during elastic deformation process, its extrinsic stacking was broken into two intrinsic ones exist on two successive planes. After yielding the slipping on these two successive planes accommodated the plastic deformation and broke up the loop. The results in this work proved that, for low stacking fault energy FCC metals such as copper and stainless steel, to describe their deformation mechanism after neutron or heavy ion irradiation, unfaulting and prismatic slipping mechanism cannot apply for interstitial Frank loops, and the behavior of these loops have dependence on their size and Schmid factor.