IDEA #9URAUR Thin Vacuum-Tight Beryllium Foils For X-Ray Windows

APPLIED RESEARCH • NEWMATERIALS RESEARCH THIN VACUUM(cid:2)(cid:2)TIGHT BERYLLIUM FOILS FOR XX(cid:2)(cid:2)RAY WINDOWS Description National Science Center “Kharkiv Institute of Physics and Technology” (NSC KIPT) has started production of thin (8(cid:2) 100μm thickness) vacuum(cid:2)tight Be(cid:2)foils. These foils are the best candidates for the manufacturing of X(cid:2)ray input/output windows and covers for advanced detectors of X(cid:2)ray and nuclear radiation. The manufacturing process implies metal refining, obtaining of semi(cid:2)finished products in the form of defectless billets with fine(cid:2)grained structure and their subse(cid:2) quent rolling into foil at specialized flatting mills. Processing methods for each stage have been developed and mastered at KIPT. Such an approach for beryllium foils production is new and it has newer been practically implemented in any country. Vacuum tight areas of up to 100cm2 can be made from 25 μm foils. Innovative Aspect and Main Advantages Originality of the proposed goods lies in usage of highly puri(cid:2) fied beryllium (up to 99.999 % weight Ве on metallic admix(cid:2) tures) obtained by vacuum distillation technique. Authorized technology for thin beryllium foils rolling includes pre(cid:2)rolling grain size refinement and subsequent multistage flatting of beryllium billets enveloped in stainless covers accompanied by intermediate vacuuming and heat treatment. This is the only foils made of beryllium of 99,95(cid:2)99,999 % purity available on the market. The impurity(cid:2)less and vacuum(cid:2)tight foils provide superior X(cid:2)ray transmission. This improves image definition and/or allows the use of lower intensity X(cid:2)ray sources. The foils also possess excellent mechanical properties and high corrosion resist(cid:2) ance, along with low surface roughness. Areas ooff Application Windows for : X(cid:2)ray tubes, X(cid:2)ray detectors, X(cid:2)ray lithography facilities, proportional counters, neutron sources, etc. 26 Image 1. Beryllium foils Stage ooff Development Development is in the stage of commercialization. There is possibility to produce: vacuum(cid:2)tight foil of different sizes; win(cid:2) dows for radiation input/output with tailored dimensions, high(cid:2)clean beryllium. Contact Details National Science Center “Kharkov Institute of Physics and Technology” (NSC KIPT) Akademicheskaya Street, 1, Kharkov, 61108, Ukraine Kovtun Kostayntin Vasil'оvich, of laboratory. Tel: +38(057) 3356501 Fax: +38(057) 3351739 E(cid:2)mail: kkovtun@kipt.kharkov.ua