Plasma immersion ion implantation for surface treatment of complex branched structures

The paper presents experimental results demonstrating the capabilities of plasma immersion ion implantation of silicon (Si) for surface treatment of complex branched structures such are self-expanding intravascular nickel-titanium (NiTi) stents. Using NiTi stents of diameter 4 and 8 mm, it is shown that plasma immersion ion implantation can provide rather homogeneous doping of their outer and inner surfaces with Si atoms. Also presented are research data on the processes that determine the thickness, composition, and structure of surface layers subjected to this type of treatment

EXPERIMENTAL STUDY OF CHARACTERISTICS OF CABLE FOR FAST-CYCLING SUPERCONDUCTING MAGNETS

Abstract Fast-cycling magnetic fields, produced by superconducting magnets of the SIS300 accelerator, generate cable losses, which should be reduced by increase of contact resistances between wires in the cable. For this purpose various methods of cable interstrand resistance increasing are used successfully. But the values of contact resistances have strong influence on a stability, which could be characterized by minimum quench energy (MQE). From this point of view at IHEP it was carried out the experimental study of Rutherford type 19-strand superconducting cable with high value of contact resistances. Contact resistances and MQE measurements were performed. The description of features of samples, the measurement scheme and procedure are presented along with the experimental results

Plasma immersion ion implantation for surface treatment of complex branched structures

The paper presents experimental results demonstrating the capabilities of plasma immersion ion implantation of silicon (Si) for surface treatment of complex branched structures such are self-expanding intravascular nickel-titanium (NiTi) stents. Using NiTi stents of diameter 4 and 8 mm, it is shown that plasma immersion ion implantation can provide rather homogeneous doping of their outer and inner surfaces with Si atoms. Also presented are research data on the processes that determine the thickness, composition, and structure of surface layers subjected to this type of treatment