Now showing items 1-4 of 4

    • Effects of high-temperature annealing on ESR properties of solid solutions of garnet minerals 

      Rao, T. K. Gundu; Cano, Nilo Francisco [UNIFESP]; Chubaci, Jose F. D.; Watanabe, S. (Pergamon-Elsevier Science Ltd, 2016)
      A garnet (G7) silicate mineral belonging to pyralspite subgroup was studied using the technique of electron spin resonance (ESR). This study shows that iron is present in G7 as isolated species as well as species coupled ...
    • High- and very-high-dose dosimetry using silicate minerals 

      Watanabe, Shigueo; Cano, Nilo Francisco [UNIFESP]; Carmo, Lucas S.; Barbosa, Renata de Faria [UNIFESP]; Chubaci, Jose F. D. (Elsevier B.V., 2015-01-01)
      In the present study, certain natural silicate minerals such as aquamarine (AB), morganite (PB), goshenite (WB), white jadeite (JW), green jadeite (JG), pink tourmaline (PT) and two varieties of jadeite-like quartz, denoted ...
    • OSL and EPR dating of pottery from the archaeological sites in Amazon Valley, Brazil 

      Cano, Nilo Francisco; Munita, Casimiro S.; Watanabe, Shigueo; Barbosa, Renata de Faria; Chubaci, Jose F. D.; Tatumi, Sonia Hatsue [UNIFESP]; Neves, Eduardo G. (Elsevier B.V., 2014-11-26)
      Pottery fragments from the Hatahara archaeological site, Amazon Valley, have been dated by thermoluminescence (TL), optically stimulated luminescence (OSL) and electron paramagnetic resonance (EPR) techniques. X-ray ...
    • Study of luminescence, color and paramagnetic centers properties of albite 

      Cano, Nilo Francisco [UNIFESP]; Santos, Lara H. E. dos; Chubaci, Jose F. D.; Watanabe, Shigueo (Elsevier B.V., 2015-02-25)
      A sample of natural albite, NaAlSi3O8, from the state of Minas Gerais, Brazil, has been investigated. the mineral is a solid solution of K-feldspar (4600 ppm - K) and Ca-feldspar (1100 ppm - Ca). the TL spectra of natural ...