by the Reissner-Nordström geometry [@Ger-Maar:2001:]. This special solution is most extensively studied in the literature, since its external field is identical to those of the black hole solution with spherical symmetry [@Dad-Maar-Pap-Rez:2000:PHYSR4:] — therefore, the results of our study could be efficiently compared to the results obtained in studies of other phenomena [@Boh-Har-Lob:2008:CLAQG:; @Kot-Stu-Tor:2008:CLASQG:]. We consider both positive and negative values of the braneworld tidal parameter — usually, only the negatively valued tidal charges (corresponding to positive tension of the brane) are discussed [@Ger-Maar:2001:], but the inverse situation with positive tidal charge is not excluded and will be treated here, since it could demonstrate some new interesting effects.

Our paper is organized as follows. In Section \[SECbrwns\], we summarize properties and matching conditions of the internal uniform energy density spacetime and the Reissner-Nordström external spacetime. In Section \[SECogeoi\], null geodesics of both the internal and external spacetime are described in terms of properly given effective potential and the ECS are classified according to the properties of the trapping region of the null geodesic motion. In Section \[SECtrappn\], the trapping of neutrinos is discused. In Section \[SECeffnt\], the trapping efficiency coefficients are defined for both the total neutrino luminosity and neutrino 