Current status and future developments of the ion beam facility at the centre of micro-analysis of materials in Madrid

Abstract

We report on the current status of the ion beam laboratory of the Centre of Micro-Analysis of Materials at the Autonomous University of Madrid. The 5 MV accelerator facility provides MeV ion beams of any stable element. Six main beam lines are under operation, allowing the analysis and modification of materials through ion beam methods. Although the most demanded ions are H and He for standard Rutherford backscattering spectrometry and particle-induced X-ray emission experiments, many other analytical techniques and specific set-ups are available for users. The facility especially highlights for the use of high-energy heavy ions and microbeams, with important applications in material science, optics and electronics, biology, cultural heritage, and astrophysics. Ongoing upgrades of the facility are oriented to improve the quality of the service for external users and to face new scientific and technological challenges in areas such as advanced materials, space, energy and health. PACS. 29.17.+w Electrostatic, collective, and linear accelerators -79.20.Rf Atomic, molecular, and ion beam impact and interactions with surfaces -81.70.-q Methods of materials testing and analysis -81.20.-n Methods of materials synthesis and materials processing

Process design for the manufacturing of soft X-ray gratings in single-crystal diamond by high-energy heavy-ion irradiation

“…The implantations were performed at the CMAM microbeam line [17,18], using a focused 9 MeV 12 C +3 ion beam with a size of about 5 × 2 μm 2 and a beam current of about 200 pA. The sample was implanted in frontal geometry, and the scan was performed pixel-by-pixel using a home-made software.…”

Comprehensive Model for the Transformation of Zinc Nitride Metastable Layers

“…The experiments were carried out at the Center of Micro-Analysis of Materials, using a 5 MV Cockcroft-Walton ion accelerator. 19 The sample, mounted in a 3 axes goniometer and tilted 20°in the standard symmetrical geometry, was analyzed with a collimated 25 MeV I 4+ beam, ensuring a large penetration depth. The telescope was placed at a 40°scattering angle and equipped with two carbon foil stations separated by 458 mm.…”

Characterization of the proton pulsed beam at CMAM

“…For a more detailed description of each line, see Ref. [2]. Figure 1 shows a scheme of the accelerator with its spatial distribution (a) and a picture of the accelerator hall from the point of view of the end of the experimental lines (b).…”