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2010 | 8 | 1 | 95-100
Tytuł artykułu

On the modification of methods of nuclear chronometry in astrophysics and geophysics

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In practically all known methods of nuclear chronometry until now, research has usually taken into account the life-times of only the fundamental states of α-radioactive nuclei. But in the processes of nuclear synthesis in stars and under the influence of constant cosmic radiation on the surfaces of planets the excitations of the α-radioactive nuclei are still ongoing. Between these processes there are states with excited α-particles inside the parent nuclei leading to much smaller life-times. And inside the large masses of stellar, terrestrial and meteoric substances there are transitions between different internal conditions of radioactive nuclei that are accompanied by infinite chains of γ-radiations with subsequent γ-absorptions, further γ-radiations, etc. For a description of the α-decay evolution that accounts for such excited states and multiple γ-radiations and γ-absorptions inside stars, and under the influence of cosmic radiation on the Earth’s surface we present a quantum-mechanical approach, which is based on the generalized Krylov-Fock theorem. A few simple estimations are also presented. These approaches lead to the conclusion that the usual (non-corrected) “nuclear clocks” do really point not to realistic values but to the upper limits of the durations of α-decay in stellar and planet processes.
Wydawca

Czasopismo
Rocznik
Tom
8
Numer
1
Strony
95-100
Opis fizyczny
Daty
wydano
2010-02-01
online
2009-11-15
Twórcy
  • Institute for Nuclear Research of the National Ukrainian Academy of Sciences, Laboratory of Time Analysis of Nuclear Processes, prospekt Nauki 47, Kiev, 03028, Ukraine, olkhovsky@mail.ru
  • Institute for Nuclear Research of the National Ukrainian Academy of Sciences, Laboratory of Time Analysis of Nuclear Processes, prospekt Nauki 47, Kiev, 03028, Ukraine
Bibliografia
  • [1] J. Audouze, S. Vauclair, An Introduction to Nuclear Astrophysics, The Formation and the Evolution of Matter in the Universe (Reidel Publish. Comp. 1980) Ch. VIII
  • [2] V. S. Olkhovsky, Atti dell’Accademia Peloritana dei Pericolanti, Vol. LXXVI (UniversitaŠ di Messina, Messina, Italy, 1998) 59
  • [3] V. S. Olkhovsky, Influence of excited radioactive nuclei for results in large-scale nuclear chronometry, In: Proceedings of the International Conference of Nuclear Physics at Border Lines, 21–24 May 2001, Messina, Italy (2001) 241
  • [4] E. Wefers, F. Bosch, T. Faestermann et al., Nucl. Phys. A 626, 215 (1997) http://dx.doi.org/10.1016/S0375-9474(97)00538-1[Crossref]
  • [5] N. S. Krylov, V. A. Fock, Zh. Eksp. Teor. Fiz.+ 17, 93 (1947)
  • [6] V. S. Olkhovsky, Izv. A. N. SSSR Fiz.+ 49, 938 (1985)
  • [7] V. S. Olkhovsky, N. L. Doroshko, G. A. Prokopets, Izv. A. N. SSSR Fiz.+ 54, 988 (1990)
  • [8] V. S. Olkhovsky, Soviet Journal Particles and Nuclei 15, 130 (1984)
  • [9] V. S. Olkhovsky, Nukleonika 35, 99 (1990)
  • [10] M.W. Friedlander, Cosmic Rays (Canbridge, MA: Harward University Press, 1989) 1601
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11534-009-0074-0
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