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DTRA’s advancements in nuclear and radiological detection
A new, more complex nuclear age has begun. Echoing the tensions of the Cold War amid rapidly evolving nuclear and radiological threats, preparedness in the modern age is a contest of scientific innovation. The Research and Development Directorate (RD) at the Defense Threat Reduction Agency (DTRA) is charged with winning this contest.
K. Sugiyama, K. Kanda, S. Iwasaki, M. Nakazawa, H. Hashikura, T. Iguchi, H. Sekimoto, S. Itoh, K. Sumita, A. Takahashi, J. Yamamoto
Fusion Science and Technology | Volume 8 | Number 1 | July 1985 | Pages 1491-1496
Blanket Neutronic | Proceedings of the Sixth Topical Meeting on the Technology of Fusion Energy (San Francisco, California, March 3-7, 1985) | doi.org/10.13182/FST85-A39977
Articles are hosted by Taylor and Francis Online.
A benchmark experiment on tritium breeding in a lithium sphere of 120-cm diameter has been done using the intense 14-MeV neutron source OKTAVIAN at Osaka University. Radial measurement data on 6Li and 7Li tritium production rates and several activation rates inside the lithium sphere agreed with 1-D transport NITRAN and ANISN calculations to within about 20%. For a more detailed comparison, further corrections are thought to be necessary. The anisotropies of intensity and energy on neutron emission with respect to the deuteron beam axis, and scattering effects of source neutrons by the target assembly must be considered.
