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Conference: Bucharest University Faculty of Physics 2016 Meeting


Section: Nuclear and Elementary Particles Physics


Title:
Monte-Carlo model calculation of light element cross sections by neutron transmission reactions


Authors:
C. OPREA, A. OPREA


Affiliation:
FLNP, Joint Institute for Nuclear Research (JINR), Dubna 141980, RF


E-mail
coprea2005@yahoo.co.uk


Keywords:
light elements, neutron resonances, capture and total cross section, neutron transmission, Monte-Carlo simulation


Abstract:
Monte Carlo simulation for the evaluation of the concentration, widths and others properties of light nuclei from some samples consisting in a succession of capture and total cross section measurements in neutron transmission experiments has been done. We have analyzed in a computer simulated experiment the cases when a sample contains some light elements, as 6Li and 10B, together with some medium and heavy nuclei. The 6Li and 10B nuclei, for thermal neutrons, have a very high value of (n,Ą) cross section and a very small capture cross sections [7]. By using the neutron resonance parameters [7] it was observed that the thermal cross sections values are described mainly by the S-resonances for both nuclei and less by the P-resonances [8,9]. The present computer evaluation is a proposal for experiments on light nuclei data evaluation to the IREN - the new neutron source from the FLNP.


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Acknowledgement:
This work is partially supported by the Program of Cooperation between JINR and Romanian Universities leaded by Romanian Plenipotentiary Representative to JINR Dubna.