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Current issue   Ukr. J. Phys. 2014, Vol. 59, N 1, p.5-8
https://doi.org/10.15407/ujpe59.01.0005    Paper

Mitrokhovich N.F., Lashko A.P., Lashko T.N., Sidorenko L.P.

Institute for Nuclear Research, Nat. Acad. of Sci. of Ukraine
(47, Prosp. Nauky, Kyiv 03680, Ukraine; e-mail: anatolii.lashko@gmail.com)

On the Structure of Kπ = 3/2+, 362-keV Level in 165Ho

Section: Nuclei and nuclear reactions
Original Author's Text: Ukrainian

Abstract: High-precision measurements are carried out on a π √2 magnetic β-spectrometer for the relative intensities of the electron lines of internal conversion on the K- and L-shells of 165Ho nucleus, with the 362-keV γ-transition being used. The penetration parameter λ for the M2-component of this transition and the multipole mixing ratio δ(E3/M2) are determined for the first time. The value of E3-multipolarity admixture corresponds to the probability of radiative transition B(E3)(362 keV) = (46 ± 6) W.u., which testifies to its collective nature and a probable octupole deformation of 165Ho nucleus.

Key words: radioactivity, 165Dy, 165Ho, magnetic spectrometer, internal conversion, penetration parameter, multipole mixing ratio.


  1. N.F. Mitrokhovich, L.P. Sidorenko, and A.I. Feoktistov, Izv. Akad. Nauk SSSR Ser. Fiz. 55, 2154 (1991).
  2. N.F. Mitrokhovich and L.P. Sidorenko, in Accuracy Problems in Nuclear Spectroscopy 1990 (Institute of Physics of the Lithuanian Academy of Sciences, Vilnius, 1990), p. 21 (in Russian).
  3. L. Persson, R. Hardell, and S. Nilsson, Arkiv Fysik 23, 1 (1963).
  4. V.A. Bondarenko, P.T. Prokofiev, and L.I. Simonov, Izv. Akad. Nauk SSSR Ser. Fiz. 29, 2168 (1965).
  5. B.C. Dutta, T.V. Egidy, Th.W. Elze, and W. Kaiser, Z. Phys. 207, 153 (1967).
  6. I.M. Band, M.A. Listengarten, and A.P. Feresin, Anomalies in Gamma-Ray Internal Conversion Coefficients (Nauka, Leningrad, 1976) (in Russian)
  7. M.A. Listengarten, in Modern Methods of Nuclear Spectroscopy 1985 (Nauka, Leningrad, 1986), p. 142 (in Russian).
  8. R.S. Hager and E.C. Seltzer, Nucl. Data Tables A 6, 1 (1969).
  9. V.I. Kirishchuk, A.P. Lashko, and T.M. Lashko, Ukr. Fiz. Zh. 57, 1097 (2012).
  10. R.S. Hager and E.C. Seltzer, Nucl. Data Tables A 4, 1 (1968).
  11. A.K. Jain, A. Ghosh, and B. Singh, Nucl. Data Sheets 107, 1075 (2006).
  12. V.G. Solov'ev, P. Fogel, and G. Yungklaussen, Izv. Akad. Nauk SSSR Ser. Fiz. 31, 518 (1967).
  13. V.G. Solov'ev and S.P. Fedotov, Izv. Akad. Nauk SSSR Ser. Fiz. 36, 706 (1972).