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Radiation Protection Dosimetry Advance Access originally published online on May 13, 2007
Radiation Protection Dosimetry 2007 126(1-4):64-68; doi:10.1093/rpd/ncm014
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© The Author 2007. Published by Oxford University Press. All rights reserved. For Permissions, please email: journals.permissions@oxfordjournals.org

Fast neutron beams—prospects for the coming decade

J. Blomgren*

Department of Neutron Research, Uppsala University, Box 525, S-751 20 Uppsala, Sweden

* Corresponding author: Jan.Blomgren{at}tsl.uu.se

The present status of neutron beam production techniques above 20 MeV is discussed. Presently, two main methods are used; white beams and quasi-monoenergetic beams. The performances of these two techniques are discussed, as well as the use of such facilities for measurements of nuclear data for fundamental and applied research. Recently, two novel ideas on how to produce extremely intense neuton beams in the 100–500 MeV range have been proposed. Decay in flight of beta delayed neutron-emitting nuclei could provide beam intensities five orders of magnitudes larger than present facilities. A typical neutron energy spectrum would be essentially monoenergetic, i.e., the energy spread is about 1 MeV with essentially no low-energy tail. A second option would be to produce beams of 6He and dissociate the 6He nuclei into {alpha} particles and neutrons. The basic features of these concepts are outlined, and the potential for improved nuclear data research is discussed.


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