AJUSTE POR MINIMOS CUADRADOS LEAST SQUARE FIT 2 ANGULAR DISTRIBUTION 1 APROXIMACION DE BORN 1 BARRAS DE CONTROL DEL REACTOR 1 BORN APPROXIMATION 1 COUPLING 1 DECAIMIENTO 1 DECAY 1 DISPERSION ELASTICA 1 ELASTIC SCATTERING 1 ESTADOS FUNDAMENTALES 1 FLUJO DE NEUTRONES 1 GROUND STATES 1 LEAD 207 1 LEAD 208 1 NEUTRON FLUX 1 NEUTRONES INSTANTANEOS 1 NIQUEL 58 1 Neutrones pulsados 1 OXYGEN 16 REACTIONS 1 Optical model and distorted wave analusis of (d,d) (d,p) and (d,d´) reactions on O16, Ni 58, Pb207 and Pb208 at 27.5 Mev 1 REACTIVIDAD 1 REACTOR CONTROL RODS 1 STRIPPING 1