Measurements of fast neutron spectrum in QUINTA assembly irradiated with 2, 4 and 8 GeV deuterons

Abstract

Experimental values of high energy neutron flux by application Yttrium-89 foils in QUINTA assembly, using 2, 4 and 8 GeV deuteron beams (Fig. 1) from the JINR Nuclotron (2012 E+T -RAW experiments) are presented. Evaluation of average high energy neutron fluxes for three energy ranges (11,5-20.8, 20,8-32.7, 32,7-100 MeV) using the determined three isotopes production of 88 Y 87 Y and 86 Y [1] are performed. The (n,xn) reaction rates of yttrium samples located inside the assembly were determined through gamma spectrometry. We stared to check values of cross section data for Y-89 neutron reactions (n,xn) experimentally.