• Українська
  • English

< | Next issue >

Current issue   Ukr. J. Phys. 2015, Vol. 60, N 4, p.371-376
https://doi.org/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.


  1. L.A. Kroger and C.W. Reich, Nucl. Phys. A 259, 29 (1976). CrossRef
  2. R.G. Helmer and C.W. Reich, Phys. Rev. C 49, 1845 (1994). CrossRef
  3. Z.O. Guimaraes-Filho and O. Helene, Phys. Rev. C 71, 044303 (2005). CrossRef
  4. B.R. Beck, J.A. Becker, P. Beiersdorfer, G.V. Brown, K.J. Moody, J.B. Wilhelmy, F.S. Porter, C.A. Kilbourne, and R.L. Kelley, Phys. Rev. Lett. 98, 142501 (2007). CrossRef
  5. F.F. Karpeshin and M.B. Trzhaskovskaya, Phys. Rev. C 76, 054313 (2007). CrossRef
  6. S.G. Porsev and V.V. Flambaum, Phys. Rev. A 81, 032504 (2010). CrossRef
  7. S.G. Porsev and V.V. Flambaum, Phys. Rev. A 81, 042516 (2010). CrossRef
  8. S.G. Porsev, V.V. Flambaum, E. Peik, and Chr. Tamm, Phys. Rev. Lett 105, 182501 (2010). CrossRef
  9. C.J. Campbell, A.G. Radnaev, A. Kuzmich, V.A. Dzuba, V.V. Flambaum, and A. Derevianko, Phys. Rev. Lett. 108, 120802 (2012). CrossRef
  10. E.V. Tkalya and L.P. Yatsenko, Laser. Phys. Lett. 10, 105808 (2013). CrossRef
  11. X. Zhao, Y.N.M. de Escobar, R. Rundberg, E.M. Bond, A. Moody, and D.J. Vieira, Phys. Rev. Lett. 109, 160801 (2012). CrossRef
  12. E. Peik and K. Zimmermann, Phys. Rev. Lett 111, 018901 (2013). CrossRef
  13. V. Barci, G. Ardisson, G. Barci-Funel, B. Weiss, O. El Samad, and R.K. Sheline, Phys. Rev. C 68, 034329 (2003). CrossRef
  14. V.L. Ginzburg, Usp. Fiz. Nauk 39, 973 (1996). CrossRef
  15. http://physics.nist.gov/PhysRefData/Star/Text/ESTAR.html.
  16. V.I. Korepanov, Laws of Evolution of Primary Radiation Defects in Ionic Crystals with Initial Defects, PhD Thesis (MSU, Moscow, 2013) (in Russian).
  17. V.V. Pologrudov and E.N. Karnauhov, Fiz. Tverd. Tela 31, 179 (1989) [in Russian].
  18. W. Viehmann, A.G. Eubanks, G.F. Pieper, and J.H. Bredekamp, Appl. Opt. 14, 2104 (1975). CrossRef