Published February 2005
| Version v1
Journal article
Study of paramagnetic and luminescence centers of microcline feldspar
Creators
- 1. Faculdade de Tecnologia de Sao Paulo, Praca Cel. Fernando Prestes, 30, 01124-060, Sao Paulo, SP (Brazil)
- 2. FFCLR-USP, Dep. Fisica e Matematica, Av. Bandeirantes, 3900, 14040-901, Ribeirao Preto, SP, Brasil (BR)
- 3. Universidade do Sagrado Coracao, Rua Irma Arminda, 10-50, 17011-160, Bauru, Sao Paulo (Brazil)
- 4. FFCLR-USP, Dep. Fisica e Matematica, Av. Bandeirantes, 3900, 14040-901, Ribeirao Preto, SP (Brazil)
- 5. CNEN-IPEN/SP, Divisao de Radioquimica, c.p.11049- cep.05422.970, Sao Paulo, SP (Brazil)
Description
Microcline feldspar crystal has been analyzed in order to determine the centers suitable for use in ESR and luminescence dating. ESR measurements at RT showed the Fe3+ line, and at 77K the Si-O-..X signal with g=2.0052, 2.0098 and 2.0128. TL glow peak at 157 and 300 deg. C in UV interval were observed and in the VIS range we noted peaks at 150, 280 and 340 deg. C. TL growth curve of the 340 deg. C peak could be fitted by a saturating exponential equation and can be used in TL dating. Emission curves showed band widths 1.95+/-0.09, 2.73+/-0.08 and 4.94+/-0.50eV. Transitions from 4T1->6A1 of Fe3+ can be associated with the 1.95eV band and the transition from 4A14E(G)->6A1(S) with 2.73eV band
Additional details
Identifiers
- DOI
- 10.1016/j.apradiso.2004.08.006;
- PII
- S0969-8043(04)00453-1;
Publishing Information
- Journal Title
- Applied Radiation and Isotopes
- Journal Volume
- 62
- Journal Issue
- 2
- Journal Page Range
- p. 231-236
- ISSN
- 0969-8043
- CODEN
- ARISEF
Conference
- Title
- 6. international symposium on ESR dosimetry and applications
- Dates
- 12-16 Oct 2003
- Place
- Campos do Jordao (Brazil)
INIS
- Country of Publication
- United Kingdom
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 36063813
- Subject category
- S36: MATERIALS SCIENCE;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- AGE ESTIMATION; ELECTRON SPIN RESONANCE; EMISSION SPECTRA; FELDSPARS; IRON IONS; OXYGEN IONS; PARAMAGNETISM; TEMPERATURE RANGE 0065-0273 K; THERMOLUMINESCENCE
- Descriptors DEC
- CHARGED PARTICLES; EMISSION; IONS; LUMINESCENCE; MAGNETIC RESONANCE; MAGNETISM; MINERALS; PHOTON EMISSION; RESONANCE; SILICATE MINERALS; SPECTRA; TEMPERATURE RANGE
Optional Information
- Copyright
- Copyright (c) 2004 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.