Preparation and properties of monomolecular films for use as radioactive source mounts

Opportunities in the Synthesis and Design of Radioactive Thin Films and Nanoparticles

“…For example, most types of nuclear spectroscopy require thin and uniform sources to obtain accurate readings. There are many review articles available − that detail ways to distribute α and β sources over metal backings to produce relatively uniform coverages. The other major early use of radioactive films was the radioactive tracer technique, which makes use of photon or charged particle emissions from a radioisotope to determine coverage of an adsorbate, progress of a chemical reaction, or the migration of an atom through a material. , Instead of using these films for therapeutic gain, they were constructed as good model systems to study fundamental properties of materials and the radionuclides themselves.…”

“…Additional studies used the Langmuir–Blodgett technique to create geometrically defined arrays of β-emitting isotopes such as 3 H, 32 P, and 45 Ca . Isotopes such as 51 Cr and 55 Fe have also been attached to amphilic monolayers through similar techniques . Other published work has used soaps as the drop-casting solution to immobilize radioactive metal atoms, e.g., [ 109 Cd] eicosanoate, in a well-ordered film …”

“…21 Isotopes such as 51 Cr and 55 Fe have also been attached to amphilic monolayers through similar techniques. 10 Other published work has used soaps as the drop-casting solution to immobilize radioactive metal atoms, e.g., [ 109 Cd] eicosanoate, in a well-ordered film. 22 The Langmuir−Blodgett technique can be used to create multilayers of amphiphiles by repeatedly immersing the film, allowing for the precise buildup of multilayers of known thickness.…”