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Aging effect of Co/C soft x-ray multilayer mirrors (1997)

Jiang, E. Y. ; Bai, H. L. ; Tian, R. Y. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 81 (1997), S. 184-189

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The effect of aging on Co/C multilayer x-ray mirrors is presented. One significant result is the enhancement of the reflectivity at grazing incidence with time for the Co/C multilayers with C-on-top stored in air or argon and Co-on-top stored in argon. This can be interpreted in terms of a Co–C phase-separation at Co–C interfaces due to the positive enthalpy of Co–C mixing. Results also show that oxidation of the surface of Co-on-top Co/C multilayers plays an important role in the decrease of reflectivity. The oxidation can be prevented by storing the multilayers in an oxygen-free atmosphere or by depositing amorphous carbon as the top layer. The reflectivity of tarnished multilayers can be restored by removing the oxides by wet chemical methods. © 1997 American Institute of Physics.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.363839

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