Výsledky vyhledávání - "Milena Ribas de Miranda"

Gamma-rays and heat-treatment conversions of point defects in massive rose quartz from the Borborema Pegmatite Province, Northeast Brazil

Autor: Sandra Amores Casals, Milena Ribas de Miranda, Pedro L. Guzzo, Sandra de Brito Barreto, Raysa Sthefany Gomes Gonzaga

Publikováno v: Physics and Chemistry of Minerals. 44:701-715

An extensive characterization of trace elements and point defects in rose quartz from the Borborema Pegmatite Province (BPP) in the northeast of Brazil was carried out by complementary spectroscopic methods. The aim here was to document the change in

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::25096eb53f81cf852277001fe6d75d63
https://doi.org/10.1007/s00269-017-0895-0

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Espectroscopia infravermelha à baixa temperatura em quartzos e ametistas com altas concentrações de OH e H2O

Autor: Milena Ribas de Miranda, Pedro L. Guzzo, Adão Benvindo da Luz

Publikováno v: Rem: Revista Escola de Minas v.62 n.3 2009
REM. Revista Escola de Minas
Escola de Minas
instacron:ESCOLA DE MINAS
Rem: Revista Escola de Minas, Volume: 62, Issue: 3, Pages: 349-356, Published: SEP 2009

O objetivo desse trabalho foi caracterizar os defeitos pontuais relacionados aos grupos OH e H2O em quartzos e ametistas, crescidos em cavidades do tipo geodo em basalto da Formação Serra Geral (RS), usando a espectroscopia infravermelha (IV) a -17

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5306ef527ec690348bf983ebabf16950
https://doi.org/10.1590/s0370-44672009000300013

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Point defects and pre-dose requirements for sensitization of the 300°C TL peak in natural quartz

Autor: Milena Ribas de Miranda, Sandra de Brito Barreto, Helen J. Khoury, Pedro L. Guzzo, Armando Hideki Shinohara

Publikováno v: Physics and Chemistry of Minerals. 36:75-85

This paper discusses the structural features required to stimulate a strong thermoluminescence (TL) glow peak near 300°C in clear natural quartz. For that reason, fresh TL data taken from several specimens prepared from five single crystals with kno

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e6a1f06dec92138b6cced224e1d73a9d
https://doi.org/10.1007/s00269-008-0259-x

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Estudo da suscetibilidade ao escurecimento por radiação gama de quartzo róseo-leitoso da província pegmatítica da Borborema

Autor: Milena Ribas de Miranda, Sandra de Brito Barreto, Raysa Sthefany Gomes Gonzaga, Joan Carles Melgarejo, Pedro L. Guzzo

Publikováno v: Revista Brasileira de Geociências. 42

Impurity-related point defects and gamma-radiation response of massive quartz from the Borborema pegmatite province, in Brazil. This work has investigated the changes induced by γ-radiation on impurity-related point defects in massive rose quartz fr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bcbd74b0d6e8872f7d0d6062f6e9a53e
https://doi.org/10.5327/z0375-75362012000200006

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