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Radiation Protection & Shielding
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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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!
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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.
S. Fan, J. Rong, H. Zhang, Z. Zhao
Nuclear Science and Engineering | Volume 144 | Number 3 | July 2003 | Pages 219-226
Technical Paper | doi.org/10.13182/NSE03-A2355
Articles are hosted by Taylor and Francis Online.
The formation cross section of the nuclide production of proton-induced reactions with intermediate energy is important for a variety of applications. For instance, the mass and charge distribution of residual products produced in the spallation reactions needs to be studied because it can provide useful information for the disposal of nuclear waste and residual radioactivity generated by the spallation neutron target system. With our current work, we have developed the Many Stage Dynamical Model (MSDM) based on the Cascade-Exciton Model (CEM). By introducing Mshnik's recent work on the CEM code, the MSDM code and the Quantum Molecular Dynamics (QMD) plus Statistical Decay Model (SDM) (QMD+SDM) and QMD plus FISSION (QMD+FISSION) models are adopted; we use them to investigate the mass distribution of Nb, Au, and Pb of proton-induced reactions with energies from 100 MeV to 3 GeV. The agreement between the developed MSDM simulations and the measured data as well as the QMD+FISSION model are good in the energy range of 100 MeV to 3 GeV, and deviations mainly show up in the mass range of 90 to 140 in the high energy of protons incident on the Au and Pb target for the MSDM and QMD+FISSION model simulations. The QMD+SDM can reproduce only part of the spallation fragments and cannot reproduce the fission fragments of the measured data.
