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The Radiation Protection and Shielding Division is developing and promoting radiation protection and shielding aspects of nuclear science and technology — including interaction of nuclear radiation with materials and biological systems, instruments and techniques for the measurement of nuclear radiation fields, and radiation shield design and evaluation.
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ANS Student Conference 2025
April 3–5, 2025
Albuquerque, NM|The University of New Mexico
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Fusion Science and Technology
Latest News
Norway’s Halden reactor takes first step toward decommissioning
The government of Norway has granted the transfer of the Halden research reactor from the Institute for Energy Technology (IFE) to the state agency Norwegian Nuclear Decommissioning (NND). The 25-MWt Halden boiling water reactor operated from 1958 to 2018 and was used in the research of nuclear fuel, reactor internals, plant procedures and monitoring, and human factors.
Akito Takahashi, Toshiyuki Iida, Hiroyuki Miyamaru, Morio Fukuhara
Fusion Science and Technology | Volume 27 | Number 1 | January 1995 | Pages 71-85
Technical Paper | Nuclear Reaction in Solid | doi.org/10.13182/FST95-A30351
Articles are hosted by Taylor and Francis Online.
Worldwide cold fusion experiments have given anomalous results with regard to levels of kilo-electronvolts per atom excess heat, 4He generation, level of emission of neutrons and tritons with a 10−4 to 10−7 neutron-to-triton yield ratio, and emission of high-energy charged particles, which cannot be explained by the known d + d fusion process. A previously proposed multibody deuteron fusion model in solids is elaborated further to explain these anomalous results. A transient dynamics in metal deutendes is proposed to generate close pairs and clusters of deuterons with time-dependent deep atomic potential inducing a strong screening effect on Coulomb barrier penetration. Very approximate numerical estimations of reaction rates for the competing 2D, 3D, and 4D fusion processes in PdDx and TiDx are obtained with high-level reaction rates enough to explain observed heat levels. Decay channels of virtual compound states, i.e., 4He*, 5Li*, 6Li*, 7Be*, and 8Be* by 2D, H + 2D, 3D, H + 3D, and 4D fusions, are discussed in detail to know the nuclear products. Major generation of 4He by H + 2D, 3D, H + 3D, and 4D processes are concluded. Identification of particle types and their specific released kinetic energies is given to explain measured charged-particle spectra by deuteron beam implantation experiments.