Nuclear Physics and Atomic Energy

Nuclear Physics and Atomic Energy

  ISSN: 1818-331X (Print), 2074-0565 (Online)
  Publisher: Institute for Nuclear Research of the National Academy of Sciences of Ukraine
  Languages: Ukrainian, English, Russian
  Periodicity: 4 times per year

  Open access peer reviewed journal

 Home page   About 
Nucl. Phys. At. Energy 2018, volume 19, issue 1, pages 14-20.
Section: Nuclear Physics.
Received: 10.05.2017; Accepted: 22.03.2018; Published online: 12.05.2018.
PDF Full text (ru)

Correlation between directions of movement of internal conversion electron and beta-particle

M. F. Mitrokhovich*

Institute for Nuclear Research, National Academy of Sciences of Ukraine, yiv, Ukraine

*Corresponding author. E-mail address:

Abstract: Study of the correlation between the motion of conversion electron (as an accompanying particle) and β particle (as the main particle) was performed for the decay of 152Eu on installation to measure double and triple coincidences of γ-quanta with β-particles, electrons and with low energy electrons, including electrons of the secondary electron emission (e0-electrons). The correlation ϒ = (4π/P)dp/dΩ of conversion electron and β-particle was measured by the correlation of Auger electron with β--particle, since the correlation between Auger electron and conversion electron is known and it is large. Based on the measurements of γ, γβ, γ(0 + β) and γβ0-spectra, it was established that the Auger electron (indirectly also conversion electron) is strongly correlated with the β-particle in the Ω = 0 direction to the forward hemisphere and the correlation ϒ is 6.8(19) for the measurements in the decay of 152Eu. Conditional qualitative scheme for strong correlation between motion of the accompanying particle with the main one, which is due to the current components from the motion of charged particle in states after completion of the main processes, is discussed.

Keywords: β-decay, conversion electron, Auger electron, shake-off electron, 152Eu.


1. N.F. Mitrokhovich. Correlation β-particle with shake off electrons under β-decay 152Eu. In: Proc. of the Intern. Conf. Current Problems in Nuclear Physics and Atomic energy. yiv, 29 May - 03 June, 2006 (Kyiv, 2007) 412.

2. M.F. Mitrokhovich, V.. Kupryashkin. Correlation electron internal conversion with shake-off electrons under ε-decay 152Eu. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 1(19) (2007) 61. (Rus)

3. M.F. Mitrokhovich. Energy and correlation properties of shake-of electrons at β-decay. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 11(2) (2010) 125. (Rus)

4. M.F. Mitrokhovich. The spectra energies of electrons autoionization and their correlation on β-particle emission direction. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 13(1) (2012) 17. (Rus)

5. M.F. Mitrokhovich, V.T. Kupryashkin, L.P. Sidorenko. Correlation of the Auger electrons direction of movement with the internal electron conversion direction of movement. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 14(2) (2013) 129. (Rus)

6. M.F. Mitrokhovich. Correlation properties of the accompanied particle motion relate motion main particles in processes of radioactive decay and internal conversion. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 15(2) (2014) 126. (Rus)

7. M.F. Mitrokhovich. Correlation motion of the autoionization electron with positron at β+-decay. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 17(1) (2016) 18. (Ukr)

8. V.T. Kupryashkin, M.F. Mitrokhovich. Installation for measuring of temporal and power spectrums of γβ (e+e0)-coincidences. Yaderna Fizyka ta Energetyka (Nucl. Phys. At. Energy) 1(17) (2006) 90. (Rus)

9. Th. Weber, H. Giessen, M. Weckenbrock et al. Correlated electron emission in multiphoton double ionization. Nature 405 (2000) 658.

10. M. Weckenbrock, M. Hattas, . Gzasch et al. Experimental evidence for electron repulsion in multiphoton double ionization. J. Phys. B: At. Mol. Opt. Phys. 34 (2001) L449.

11. R. Moshammer, J. Ulrich, D. Fisher. Strongly directed electron emission in non-sequential double ionization of Ne by intense laser pulses. J. Phys. B: At. Mol. Opt. Phys. 36 (2003) L113.

12. J.N. Das, K. Chakrabart, S. Paul. Equal energy sharing double photoionization of helium atom at 20 eV and 40 eV above threshold. Phys. Lett. A 316(6) (2003) 400.

13. R. Dormler et al. Double ionization by one and many photons. Radiation Physics and Chemistry 70 (2004) 191.

14. K.F. Alcantra et al. Outer-Shell Double Photoionization of CH4 and CH2CL2 Molecules. Physics Procedia 66 (2015) 2.

15. V.I. Matveev, E.S. Parilis. Shake-up processes accompanying electron transitions in atoms. Sov. Phys. Usp. 25 (1982) 881. (Rus)