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ISSN 2071-0186   Ukr. J. Phys. 2015, Vol. 60, N 4, p.371-376
doi:10.15407/ujpe60.04.0371    Paper

Bilous P.V., Yatsenko L.P.

Institute of Physics, Nat. Acad. of Sci of Ukraine
(46, Nauky Ave., Kyiv 680028, Ukraine; e-mail: p.v.belous@gmail.com)

Parasitic Signals in the Method of Recoil Nuclei Applied to Direct Observation of the 229mTh Isomeric State

Section: Physics experiment techniques
Language: English

Abstract: We carry out necessary theoretical justifications for the method of recoil nuclei in application to the direct observation of the 229mTh isomeric state. We consider Cherenkov radiation, phosphorescence, and fluorescence in a crystal plate, which is used for collecting the thorium recoil nuclei, and discuss the ways to avoid these parasitic signals in order to successfully reveal 229mTh decay photons

Key words: Th-229, recoil nuclei, isomeric state, -decay, Cherenkov radiation, phosphorescence, fluorescence, magnesium fluoride.