Author/Authors :
Wan ، نويسنده , , J.-S. and Schmidt، نويسنده , , Th. and Langrock، نويسنده , , E.-J. and Vater، نويسنده , , Walter P. and Brandt-Rauf، نويسنده , , Christoph R. and Adam، نويسنده , , J. and Bradnova، نويسنده , , V. and Bamblevski، نويسنده , , V.P. and Gelovani، نويسنده , , L. and Gridnev، نويسنده , , T.D. and Kalinnikov، نويسنده , , V.G. and Krivopustov، نويسنده , , M.I. and Kulakov، نويسنده , , B.A. and Sosnin، نويسنده , , A.N. and Perelygin، نويسنده ,
Abstract :
Small samples of 129I and 237Np, two long-lived radwaste nuclides, were exposed to spallation neutron fluences from relatively small metal targets of lead and uranium, that were surrounded with a 6 cm thick paraffin moderator, and irradiated with 1.5, 3.7 and 7.4 GeV protons. The (n,γ) transmutation rates were determined for these nuclides. Conventional radiochemical La- and U-sensors and a variety of solid-state nuclear track detectors were irradiated simultaneously with secondary neutrons. Compared with results from calculations with well-known cascade codes (LAHET from Los Alamos and DCM/CEM from Dubna), the observed secondary neutron fluences are larger.
Keywords :
LAHET code , 129I-target , 237NP-target , DCM/CEM code , 239Pu production , Spallation neutrons , transmutation
