Preliminary quantitative measurements of nuclear delayed desorption were carried out in a simple setup. An amount of 99Mo in the form of sodium molybdate was deposited on an aluminum surface by drying a 0.1 N nitric acid solution. The recoil energy imparted to the daughter nucleus in the 66 hour halflife β- decay 99Mo → 99mTc, causes it to desorb from the surface with some probability. This delayed desorption probability was determined by collecting the recoils in vacuum and measuring the subsequent λ-activity of the 6 h half-life 99mTc → 99Tc isomeric transition. The dependence of this probability on the salt concentration in the deposited solution was measured. The problematics involved in the interpretation of the results, and their potential information content are discussed.
|Number of pages||5|
|Journal||Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms|
|State||Published - Jul 1988|