MEASUREMENT OF THE CROSS SECTION FOR 27Al(n,2n)26Al(T1/2=7.16×105γ) REACTION WITH ACTIVATION TECHNIQUE AROUND 14 MeV

MEASUREMENT OF THE CROSS SECTION FOR ²⁷Al(n,2n)²⁶Al(T_1/2=7.16×10⁵γ) REACTION WITH ACTIVATION TECHNIQUE AROUND 14 MeV

S. Iwasaki, J. R. Dumais and K. Sugiyama

Department of Nuclear Engineering, Tohoku University
Aramaki-Aza-Aoba, Sendai 980, Japan

Measurement of the cross section for ²⁷Al(n,2n)²⁶Al (T_1/2=7.16×10⁵γ) reaction have been made at RTNS-II around 14 MeV using activation technique. The irradiation was performed as an add-on experiment of a main long term, high temperature irradiation on the various fusion materials with maximum fluence in the RTNS-II operation. Reliable cross sections have been obtained from 14.1 MeV to 14.7 MeV and the results are not fully consistent with the previous data.

KEYWORDS: aluminum, (n,2n) cross section, 14 MeV, long life activity