A molybdenum nanostructured-film target for tunable x-ray sources: surface-structure controllable preparing and radiation intensity selecting

Author:

Shi Jia,Shen YanORCID,Cheng Ao,Jiang Yingyi,Zhang Hu,Cui Tao,Chen HuanjunORCID,Deng ShaozhiORCID

Abstract

Abstract Tunable x-ray sources have attracted interest due to providing selective focal spots and radiation intensities for different specific uses. Surface-structure of the anode target has a non-negligible impact on the radiation intensity of x-ray sources. The metal molybdenum (Mo) Lα characteristic x-ray exhibits great potential in solving key scientific problems of material analysis. However, there is still a lack of research on how to flexibly use Mo structure targets to meet the application requirements of different x-ray radiation devices. The reliable preparation of Mo targets with suitable surface-structure is also a significant challenge, particularly for those nanostructured-film targets that cannot be machined. In this study, we successfully prepared a series of self-assembled Mo nanostructured-films with controllable surface structures as a class of reflection-type x-ray sources’ anode target. The structure-activity relationship between the Mo surface nanostructures and the radiating Lα x-ray performance at different anode target angles was studied in a reflecting device layout. Mo nanostructures with smoother surface typically show better radiation performance at small inclination angles (0° to 30°), while the Mo films with a large number of nanoparticles and rough surface exhibit advantages at large inclination angles (60° to 80°). The results provide a feasible scheme for the future application of multi-functional tunable x-ray sources.

Funder

National Key Basic Research Program of China

National Natural Science Foundation of China

Guangdong Basic and Applied Basic Research Foundation

the Fundamental Research Funds for the Central Universities, Sun Yat-sen University

Science and Technology Department of Guangdong Province, the Guangzhou Municipal Science and Technology Bureau

Publisher

IOP Publishing

Subject

Condensed Matter Physics,Mathematical Physics,Atomic and Molecular Physics, and Optics

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