Speaker
Description
An accelerator-based neutron source has been proposed and created at the Budker Institute of Nuclear Physics in Novosibirsk, Russia. An original vacuum insulated tandem accelerator (VITA) is used to provide a proton/deuteron beam. The ion beam energy can be varied within a range of 0.3–2.3 MeV, keeping a high-energy stability of 0.1 %. The beam current can also be varied in a wide range (from 1 nA to 10 mA) with high current stability (0.4 %). VITA is used to generate a neutron flux via the 7Li(p,n)7Be or 7Li(d,n) reactions, a-particles through 7Li(p,a)a and 11B(p,a)aa reactions, 478 keV photons through 7Li(p,p’γ)7Li reaction, and positrons through 19F(p,e+e-)16O reaction.
The facility is used
• to study radiation blistering of a metal irradiated with protons;
• for the development of boron neutron capture therapy including use in clinics;
• for the treatment of pets with spontaneous tumors;
• for the development of instruments and methods of dosimetry;
• for testing of new boron delivery drugs;
• for radiation testing and modification of promising materials and electronic devices, including those for ITER and CERN;
• for studying the composition of films by back-scattered ions;
• for in-depth investigation of the 11B(p,a)aa neutronless fusion reaction;
• for studying neutron-induced luminescence of chemical compounds;
• for measuring cross sections and yields of nuclear reactions;
• to develop a compact source of fast neutrons;
• etc.
The report will describe the VITA, present and discuss the results obtained, and declare plans.
This research was supported by Russian Science Foundation, grant No. 19-72-30005.
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