Cretana, S. B.Mascarenhas, S.Geraldo, L. P.De Carvalho, A. [UNESP]2014-05-272014-05-271992-01-15Nuclear Inst. and Methods in Physics Research, A, v. 311, n. 3, p. 558-562, 1992.0168-9002http://hdl.handle.net/11449/64220In this article a new technique for thermal neutron detection using pyroelectric ceramics is described. The detector system is basically constituted of a PZT (lead zirconate titanate) ceramic attached to an uranium disk. The energy released in the uranium fission gives rise to an electrical signal in the detector which is amplified by a lock-in system. The neutron beam impinging on the uranium disk was modulated with a cadmium chopper. Thermal neutron fluxes within the interval of 103 to 106 n/cm2 s have been detected using a U3O8 pellet with 20% enrichment in 235U. © 1992.558-562engArtigoAcesso restrito2-s2.0-38249015223