溅射                        
                
                                
                        
                            材料科学                        
                
                                
                        
                            溅射沉积                        
                
                                
                        
                            回旋加速器                        
                
                                
                        
                            沉积(地质)                        
                
                                
                        
                            工艺工程                        
                
                                
                        
                            产量(工程)                        
                
                                
                        
                            冶金                        
                
                                
                        
                            核工程                        
                
                                
                        
                            纳米技术                        
                
                                
                        
                            核物理学                        
                
                                
                        
                            等离子体                        
                
                                
                        
                            薄膜                        
                
                                
                        
                            工程类                        
                
                                
                        
                            物理                        
                
                                
                        
                            沉积物                        
                
                                
                        
                            生物                        
                
                                
                        
                            古生物学                        
                
                        
                    
            作者
            
                Alisa Kotliarenko,O. Azzolini,G. Keppel,C. Pira,Juan Esposito            
         
                    
            出处
            
                                    期刊:Applied sciences
                                                         [Multidisciplinary Digital Publishing Institute]
                                                        日期:2021-10-03
                                                        卷期号:11 (19): 9219-9219
                                                        被引量:8
                                 
         
        
    
            
        
                
            摘要
            
            Magnetron sputtering (MS) is a relatively new deposition technique, which is being considered among the cyclotron solid target (CST) manufacturing options now available, aiming at the medical radioisotopes yield for radiopharmaceutical production. However, the intrinsic high material losses during the deposition process do not permit its use with extremely expensive target materials, such as isotopically enriched metals/oxides. In this study, R&D technology for a new recovering shield is instead proposed to assess the dissipation of target material during the sputtering processes and, thus, an estimate of the material recovery that may be feasible and the related amount. The weight-loss analysis method is used to assess the material losses level inside the chamber during processing. In all tests carried out, a high-purity copper (99.99%) was used as a target material. As a result of this study, the material distribution for both magnetron and diode sputtering depositions can be calculated. The feasibility of the ultra-thick coatings growing, devoted to CST production, is demonstrated.
         
            
 
                 
                
                    
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