Search Results - "Hadler N., J.C."

Fission-track dating of Macusanite glasses with plateau and size correction methods by Osorio A, A.M., Iunes, P.J., Bigazzi, G., Hadler N., J.C., Laurenzi, M.A., Norelli, P., Tello S., C.A., Guedes, S., Paulo, S.R.

“…Two Macusanite pebbles (MB1 and MB2) were dated with the fission-track method. Six irradiations were carried out in different nuclear reactors: Pavia (Italy),…”
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Durango apatite fission–track dating using length-based age corrections and neutron fluence measurements by natural thorium thin films and natural U-doped glasses calibrated through natural uranium thin films by Iunes, P.J., Hadler N, J.C., Bigazzi, G., Tello S, C.A., Guedes O, S., Paulo, S.R.

“…In this work, we present an approach for neutron fluence measurements based on natural thorium thin films and natural uranium-doped glasses calibrated through…”
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Address by the President of the Organizing Committee by Hadler N., J.C.

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Kinetic model for the annealing of fission tracks in minerals and its application to apatite by Guedes, S., Hadler N, J.C., Oliveira, K.M.G., Moreira, P.A.F.P., Iunes, P.J., Tello S, C.A.

“…Fission tracks are formed in apatite and other minerals after the passage of fission fragments, which deliver locally intense amounts of energy to the crystal…”
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Kinetic model for the annealing of fission tracks in zircon by Guedes, S., Hadler N, J.C., Iunes, P.J., Oliveira, K.M.G., Moreira, P.A.F.P., Tello S, C.A.

“…A model for the annealing kinetics of fission tracks is proposed based on a simplified track. The principal hypothesis is that the atoms displaced during the…”
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On indoor radon daughters’ plate-out on material surfaces by Neman, R., Hadler N, J.C., Iunes, P.J., Paulo, S.R.

“…In this work, the plate-out of radon daughters on surfaces of different sizes has been studied. Several pieces of CR-39, cut circularly with different…”
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Inter-comparison of three techniques for radon activity measurements by Neman, R., Hadler N, J.C., Iunes, P.J., Paulo, S.R., Guedes, S., Curvo, E.A.C.

“…In this paper the results of an inter-comparison employing three distinct techniques for measuring indoor radon activities are discussed: (i) NRPB–SSI…”
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The Th/U ratio in minerals by a fission-track technique: application to some reference samples in order to estimate the influence of Th in fission-track dating by Iunes, P.J., Bigazzi, G., Hadler N, J.C., Tello S, C., Guedes O, S., Paulo, S.R., Balestrieri, M.L., Norelli, P., Oddone, M., Osorio A, A.M., Zuñiga, A.

“…In this work, a recent technique for the determination of the Th/U ratio in minerals and glasses was applied to relevant samples used as reference in…”
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Effects of environmental conditions on the radon daughters spatial distribution by Godoy, M., Hadler N, J.C., Iunes, P.J., Mestanza M, S.N., Oliveira, R.A., Osorio A, A.M., Paulo, S.R.

“…The influence of environmental conditions on the indoor radon daughters spatial distribution is studied both theoretically and experimentally. Simple…”
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Measurement of indoor 222Rn using CR-39 under a thin film geometry by Neman, R.S, Schmitman, I.D, Hadler N, J.C, Iunes, P.J, Paulo, S.R, Guedes, S

“…In this work an assembly for indoor 222Rn measurement is presented. This assembly is made up of two acrylic plates (14 cm×14 cm) separated by a distance of 4…”
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Potentialities and practical limitations of absolute neutron dosimetry using thin films of uranium and thorium applied to the fission track dating by Bigazzi, G., Guedes, S., N. Hadler, J.C., Junes, P.J., Paulo, S.R., Oddone, M., A. Osorio, A.M., G. Zúñiga, A.

“…Neutron dosimetry using natural uranium and thorium thin films makes possible that mineral dating by the fission-track method can be accomplished, even when…”
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Absolute thermal neutron fluence determination by thin film of natural uranium by Bigazzi, G., Hadler N., J.C., Iunes, P.J., Oddone, M., Paulo, S.R., Zúñiga G., A.

“…An absolute monitor of thermal neutron fluence based on the 235U induced fission was developed. This monitor is constituted by a solid state nuclear track…”
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Indoor radon and radon daughters survey at Campinas-Brazil using CR-39: First results by Guedes, S., N. Hadler, J.C., Iunes, P.J., Navia, L.M.S., Neman, R.S., Paulo, S.R., Rodrigues, V.C., Souza, W.F., S. Tello, C.A., Zúñiga, A.

“…The first results of a radon and radon daughters (RD) survey performed at Campinas-SP, Brazil, are presented. We employed a technique that, potentially, makes…”
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On the nuclear emulsion detection efficiency for alpha particles and fission fragments by Hadler N., J.C., Iunes, P.J., Mello, T.C.W.P., Navia, L.M.S., Paulo, S.R.

“…In this work, the efficiency (ϵ) of the Fuji ET2F nuclear emulsion loaded with samarium was determined, for the detection of α-particles with energies ⩾ 2 MeV…”
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