Ultrasonic monitoring of the molten zone during float zone refining of single crystal germanium

DOI	Trouver le DOI : https://doi.org/10.1007/978-3-642-84003-6_91
Auteur	Rechercher : Jen, C. K.¹; Rechercher : Bussière, J. F.¹; Rechercher : De Heering, Ph.; Rechercher : Sutcliffe, P.
Affiliation	Conseil national de recherches Canada
Format	Texte, Chapitre de livre
Conférence	3rd International Symposium on Nondestructive Characterization of Materials, October 3-6, 1988, Saarbrücken, FGR
Sujet	shear wave; longtidinal wave; mode conversion; molten zone; float zone
Résumé	An ultrasonic pulse-echo method was investigated to monitor the float zone in a Ge rod during float zone refining. The feasibility of this method has been experimentally demonstrated for small diameter Ge rods, by using shear wave transducers cooled at about 30°C. It was shown that arrival times of the reflected signals from the solid-liquid Ge interface can be used for monitoring purposes and good resolution can be obtained for both zone position and thickness. Acoustic energy transfer at the solid-liquid interface, observed in the case of shear waves, is discussed in terms of multiple mode conversion. Effects of diffraction on received echoes of longitudinal and shear waves are described and analysed in terms of acoustic wave propagation in anisotropic Ge rods.
Date de publication	1989-01-01
Maison d’édition	Springer
Dans	Nondestructive Characterization of Materials : 788–795.
Langue	anglais
Publications évaluées par des pairs	Oui
Numéro du CNRC	NRCC 29711 NRC-IGM88TC-401-697-G
Exporter la notice	Exporter en format RIS
Signaler une correction	Signaler une correction (s'ouvre dans un nouvel onglet)
Identificateur de l’enregistrement	8c6d0a25-2927-4bc6-9a6a-e6826bc8339b
Enregistrement créé	2020-05-02
Enregistrement modifié	2020-06-10

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