On using Ti nanofilms in neutron spin optics

Issue title: Technical Notes from the international workshop on Neutron Delivery Systems

Article type: Research Article

Authors: Matveev, V.A.^{; *} | Pleshanov, N.K.

Affiliations: Neutron Research Division, Petersburg Nuclear Physics Institute, Gatchina, Russia. E-mail: [email protected]

Correspondence: [*] Corresponding author. E-mail: [email protected].

Abstract: This paper presents the results of a study of the oxidation of thin titanium films and their use in neutron spin optics. Kinetics of Ti nanofilm oxidation (at T=200°C) was found to be described by the logarithmic law. The asymptotic law of the oxide layer growth and the long-term stability of the Ti/TiO2 bilayer demonstrate the possibility of using the Ti nanofilms in neutron spin optics. It is experimentally proven that a protective Ti layer reliably prevents the oxidation of the functional magnetic layer of the mirror spin-flipper.

Keywords: Ti nanofilms, oxidation kinetics, neutron optics, neutron reflectometry

DOI: 10.3233/JNR-180089

Journal: Journal of Neutron Research, vol. 20, no. 4, pp. 107-111, 2018