Superconductor

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200 <strong>Superconductor</strong> the evolution of the degradation processes from this instant can be determined. This allows evaluating how the degradation process rate evolves at any instant. In the case of the Bi-2212 monoliths, it has been established that the surface degradation is associated with (Sr,Ca)CuO2 chemical decomposition. DSP has shown that this process is faster in the as-grown samples than in the annealed ones. In addition, this optical technique has also been applied to quantify the change in the degradation rate when the samples are machined with laser ablation techniques. 6. Acknowledgments Authors thank the Spanish Ministry of Science and Innovation (Projects MAT-2008-05983- C03-01 to -03) and the Gobierno de Aragón (Research groups T12, T61 and T76) for financial support of this research. Authors are also obliged to SuperPower, Inc and, in particular, to Dr. V. Selvamanickam and Dr. Y.-Y. Xie for their collaboration in applying these techniques in 2G HTS wires. Finally authors also thank Prof. G. de la Fuente and Dr. C. López-Gascón for their collaboration in applying laser ablation techniques in Bi-2212 monoliths. *Present address: Instituto Tecnológico de Óptica, Color e Imagen (AIDO), Spain 7. References Andrés, N.; Arroyo, M. P.; Hinrichs, H. & Quintanilla, M. (1999). Digital speckle interferometry as a full-field fluid-velocity technique. Opt. Lett., Vol. 24, No. 9, 575- 577, ISSN: 0146-9592 Andrés, N.; Arroyo, M. P.; Zahn, H. & Hinrichs, H. (2001). Application of digital speckle pattern interferometry for fluid velocimetry in wind tunnel flows. Exp. Fluids, Vol. 30, No. 5, 562-567, ISSN: 0732-4864 Andrés, N.; Recuero, S.; Arroyo, M. P.; Bona, M. T.; Andrés, J. M. & Angurel, L. A. (2008). Fast visualization of corrosion processes using digital speckle photography. Corrosion Science, Vol. 50, No. 10, 2965-2971, ISSN: 0010-938X Angurel, L. A.; Díez, J. C.; De la Fuente, G. F.; Gimeno, F.; Lera, F.; López-Gascón, C.; Martínez, E.; Mora, M.; Navarro, R.; Sotelo, A.; Andrés, N.; Recuero, S. & Arroyo, M. P. (2006). Laser technologies applied to the fabrication and characterization of bulk Bi-2212 superconducting materials for power applications. Phys. stat. sol. (a), Vol. 203, No. 11, 2931-2937, ISSN: 0031-8965 Angurel, L. A.; Martínez, E.; Lera, F.; Recuero, S.; Andrés, N.; Arroyo, M. P.; Xie, Y. Y. & Selvamanickam, V. (2008). Quench detection in YBa2Cu3O7-δ coated conductors using interferometric techniques. J. Appl. Phys., Vol. 104, No. 9, 093916, ISSN: 0021- 8979 Angurel, L. A.; Martínez, E.; Lera, F.; Recuero, S.; Andrés, N.; Arroyo, M. P.; Xie, Y. Y. & Selvamanickam, V. (2009). Analysis of Quench Initiation in YBCO Coated Conductors Using Optical Interferometric Techniques. IEEE Trans. Appl. Supercond., Vol. 19, No. 3, 3479-3482, ISSN: 1051-8223 Archbold, E. & Ennos, A. E. (1972). Displacement measurement from double-exposure laser photographs, Opt. Acta, Vol. 19, No. 4, 253-271, ISSN:0030-3909 Argyropoulou, R.; Ochsenkuhn-Petropoulou, M.; Dounis, C.; Karaboulis, P.; Altzumailis, A. & Ochsenkuhn K. M. (2007). Comparison of the behaviour of the three
Application of Optical Techniques in the Characterization of Thermal Stability and Environmental Degradation in High Temperature <strong>Superconductor</strong>s superconductors YBCO, Bi-2212 and MgB2 in different environmental conditions. J. Mat. Proc. Technol., Vol. 181, No. 1-3, 2-5, ISSN: 0924-0136 Burke, J.; Helmers, H.; Kunze, C. & Wilkens, V. (1998). Speckle intensity and phase gradients: influence on fringe quality in spatial phase shifting ESPI-systems. Opt. Comm., Vol. 152, No. 1-3, 144-152, ISSN: 0030-4018 Creath, K. (1985). Phase-Shifting Speckle Interferometry. App. Opt., Vol. 24, No. 18, 3053- 3058, ISSN: 0003-6935 Fricke-Begemann, T.; Gulker, G.; Hinsch, K. D. & Wolff, K. (1999). Corrosion monitoring with speckle correlation. App. Opt., Vol. 38, No. 28, 5948-5955, ISSN: 0003-6935 Fricke-Begemann, T. (2003). Three-dimensional deformation field measurement with digital speckle correlation. App. Opt., Vol. 42, No. 34, 6783-6796, ISSN: 003-6935 Goodman, J. W. (1975). Introduction to Fourier optics, Roberts & Company Publishers, ISBN:0- 07-024254-2 Goodman, J. W (1975). Static properties of laser speckle patterns, in: Laser Speckle and Related Phenomena, J. C. Dainty (Ed.), 9-74, Springer Verlag, ISBN: 0387074988, Berlin Ishiyama, A.; Tsuchida, M.; Ueda, H. & Shiohara, Y. (2007). Assessment of cryogenic thermography system using commercial fluorescent paints on their applicability to visualization of normal-zone propagation in YBCO coated conductors, IEEE Trans. Appl. Supercond., Vol. 17, No. 2, 3765-3768, ISSN: 1051-8223 Jones, R. & Wykes, C. (1989). Holographic and Speckle Interferometry, Cambridge University Press, ISBN: 0-521-34878-1 Lee, H.; Kim, H. M.; Jankowski, J. & Iwasa, Y. (2004). Detection of “hot spots” in HTS coils and test samples with acoustic emission signals. IEEE Trans. Appl. Supercond., Vol. 14, No. 2, 1298-1301, ISSN: 1051-8223 Lera, F.; Angurel, L. A.; Rojo, J. A.; Mora, M.; Recuero, S.; Arroyo, M. P. & Andrés, N. (2005). Microstructure origin of hot spots in textured laser zone melting Bi-2212 monoliths. Supercond. Sci. Technol., Vol. 18, No. 11, 1489-1495, ISSN: 0953-2048 Lobera, J.; Andrés, N. & Arroyo, M. P. (2004). From ESPI to Digital Image Plane Holography (DIPH): Requirements, possibilities and limitations for velocity measurements in a 3-D region, in: Particle image velocimetry: Recent improvements, Stanislas, M.; Westerweel, J. & Kompenhans, J. (Ed.), 363-372, Springer-Verlag, ISBN: 3-540- 21423-2, Berlin López-Gascón, C. (2005). Procesado y mecanizado de cerámicas superconductoras de Bi-2212 con técnicas láser. PhD Thesis, University of Zaragoza, Spain Martínez, E.; Angurel, L. A.; Pelegrín, J.; Xie, Y.-Y. & Selvamanickam, V. (2010). Thermal stability analysis of YBCO-coated conductors subject to over-currents. Supercond. Sci. Tecnol., Vol. 23, No. 2, 025011, ISSN: 0953-2048 Mora, M.; Díez, J. C.; López-Gascón, C. I.; Martínez, E. & De la Fuente, G. F. (2003). Laser textured Bi-2212 in planar geometries. IEEE Trans. Appl. Supercond., Vol. 13, No. 2, 3188-3191, ISSN: 1051-8223 Mora, M.; Gimeno, F.; Angurel, L. A. & de la Fuente, G. F. (2004). Laser zone melted Bi2Sr2CaCu2O8+δ thick films on (100) MgO substrate. Supercond. Sci. Technol., Vol. 17, No. 10, 1133-1138, ISSN: 0953-2048 Rastogi, P. K. (2001). Digital Speckle-Pattern Interferometry and related techniques. Willey, ISBN: 978-0-471-49052-4, Chichester, UK 201
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Superconductor edited by Adir Moys
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SCIYO.COM WHERE KNOWLEDGE IS FREE f
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VI Chapter 10 Chapter 11 Chapter 12
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1. Introduction A Model to Study Mi
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A Model to Study Microscopic Mechan
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1. Introduction The Discovery of Ty
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The Discovery of Type II Supercondu
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Microstructure, Diffusion and Growt
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4 Superconductor Properties for Sil
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Superconductor Properties for Silic
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MgB2-MgO Compound Superconductor Yi
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MgB 2-MgO Compound Superconductor t
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MgB 2-MgO Compound Superconductor S
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MgB 2-MgO Compound Superconductor F
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MgB 2-MgO Compound Superconductor
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MgB 2-MgO Compound Superconductor F
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MgB 2-MgO Compound Superconductor T
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MgB 2-MgO Compound Superconductor 4
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MgB 2-MgO Compound Superconductor G
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1. Introduction Superconducting Pro
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Superconducting Properties of Carbo
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Synthesis and Thermophysical Charac
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Development of Large Scale YBa 2Cu
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Some Chaotic Points in Cuprate Supe
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1. Introduction 15 Superconductors
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Superconductors and Quantum Gravity
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Determination of the Local Crystal-
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