Web of Conferences
Open Access
Issue ND 2007
Article Number 262
Number of page(s) 4
Section Fusion applications
DOI http://dx.doi.org/10.1051/ndata:07579
Published online 17 June 2008

International Conference on Nuclear Data for Science and Technology 2007
DOI: 10.1051/ndata:07579

Measurement of the angle-correlated neutron spectrum for the 9Be(n,2n) reaction with a pencil-beam DT neutron source

I. Murata1, S. Takaki1, K. Shiken1, K. Kondo1, H. Miyamaru1, K. Ochiai2, T. Nishitani2 and C. Konno2

1  Osaka University, Suita, Osaka 565-0871, Japan
2  Japan Atomic Energy Agency, Tokai-mura, Ibaraki 319-1184, Japan


Published online: 21 May 2008

The angle-correlated energy differential cross-section for 9Be(n,2n) reaction has been measured with the coincidence detection technique and a pencil-beam DT neutron source of FNS, JAEA. Neutron energy spectra of two emitted neutrons were separately obtained as azimuthal- and axial-angle differential value, which is called TDX. From the measured TDX, double-angle differential cross sections, ADDX, angular differential cross section, ADX, and total cross section, TOX, were deduced. In the TDX, a characteristic energy spectrum for beryllium was seen. The azimuthal ADDX unexpectedly showed a 180 deg. symmetrical spectrum, not a flat one. From the result of TOX, JENDL-3.3 and ENDF/B-VI showed a little underestimation by around 10%.

© CEA 2008