A series of Mo coatings grown on Al2O3 and Cu were prepared via sputtering method. XAS experiments were performed at the Mo K edge to characterize the coating structure and the chemical status of Mo atoms. From the XANES analysis we recognized that all Mo coatings on Al2O 3 have a slightly disordered structure with a negligible Mo oxide contribution. Moreover, the chemical state is that of the Mo metal with a negligible oxygen contribution. Compared with Cu based materials, molybdenum is an attractive material for accelerator components and a reliable option for RF linear accelerating structures to achieve high accelerating gradients and low breakdown rates, two fundamental parameters for the next generation of linear accelerators.

Structural and morphological characterization of Mo coatings for high gradient accelerating structures / Y., Xu; B., Spataro; Sarti, Stefano; V. A., Dolgashev; S., Tantawi; A. D., Yeremian; Y., Higashi; M. G., Grimaldi; L., Romano; F., Ruffino; R., Parodi; C., Caliendo; A., Notargiacomo; G., Cibin; A., Marcelli. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 430:(2013), p. 012091. [10.1088/1742-6596/430/1/012091]

Structural and morphological characterization of Mo coatings for high gradient accelerating structures

SARTI, Stefano;
2013

Abstract

A series of Mo coatings grown on Al2O3 and Cu were prepared via sputtering method. XAS experiments were performed at the Mo K edge to characterize the coating structure and the chemical status of Mo atoms. From the XANES analysis we recognized that all Mo coatings on Al2O 3 have a slightly disordered structure with a negligible Mo oxide contribution. Moreover, the chemical state is that of the Mo metal with a negligible oxygen contribution. Compared with Cu based materials, molybdenum is an attractive material for accelerator components and a reliable option for RF linear accelerating structures to achieve high accelerating gradients and low breakdown rates, two fundamental parameters for the next generation of linear accelerators.
accelerators; x-ray absorption spectra; thin film structure and morphology
01 Pubblicazione su rivista::01a Articolo in rivista
Structural and morphological characterization of Mo coatings for high gradient accelerating structures / Y., Xu; B., Spataro; Sarti, Stefano; V. A., Dolgashev; S., Tantawi; A. D., Yeremian; Y., Higashi; M. G., Grimaldi; L., Romano; F., Ruffino; R., Parodi; C., Caliendo; A., Notargiacomo; G., Cibin; A., Marcelli. - In: JOURNAL OF PHYSICS. CONFERENCE SERIES. - ISSN 1742-6588. - STAMPA. - 430:(2013), p. 012091. [10.1088/1742-6596/430/1/012091]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/515836
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