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Nuclear Science and Engineering
Fusion Science and Technology
The blossoming of cooperation between the U.S. and Canada
The United States and Canadian nuclear industries used to be an example of how two independent teams of engineers facing an identical problem—making electricity from uranium—could come up with completely different answers. In the 1950s, Canada began designing a reactor with tubes, heavy water, and natural uranium, while in the U.S. it was big pots of light water and enriched uranium.
But 80 years later, there is a remarkable convergence. The North American push for a new generation of nuclear reactors, mostly small modular reactors (SMRs), is becoming binational, with U.S. and Canadian companies seeking markets and regulatory certification on both sides of the border and in many cases sourcing key components in the other country.
R. Bencardino, R. Bevilacqua, G. Giorginis, F.-J. Hambsch
Nuclear Science and Engineering | Volume 177 | Number 1 | May 2014 | Pages 68-76
Technical Paper | doi.org/10.13182/NSE13-25
Articles are hosted by Taylor and Francis Online.
An approach is presented for the measurement of the 6Li(n,t)4He reaction cross section based on complementary measurements benchmarked against kinematic simulations. Key aspects of the approach include taking advantage of the particle leaking (PL) effect, and using a one-dimensional time projection chamber (1D-TPC) and an ionization chamber to detect the reaction products from monoenergetic and white neutron beams, respectively. We have derived analytical expressions describing the PL region in both the laboratory and the center-of-mass reference systems. Two complementary 1D-TPC experiments are discussed, using 6LiF deposits onto transparent aluminum foils, in the backward and forward orientations, respectively. The 6Li(n,t)4He reaction kinematics is discussed for 2-MeV neutrons and extended to the energy range from thermal to 3 MeV to reflect the experimental capability of the Institute for Reference Materials and Measurements Van de Graaff and Geel Electron Linear Accelerator facilities.