On the Modification of Nuclear Chronometry in Astrophysics and Geophysics

Vladislav S. Olkhovsky

《Development in Earth Science》 2卷 (2014/12) Pp. 1-7

並列摘要

There are usually taken into account the life-times of the only fundamental states of α-radioactive nuclei in the standard methods of the nuclear chronometry. But there always present the excitations of the α-radioactive nuclei in the processes of nuclear synthesis in the stars and under the influence of the constant cosmic radiation on the planet surfaces. Between them there are the states with the excited α-particles inside the parent nuclei and so with much smaller life-times. The transitions between different states of radioactive nuclei are accompanied by infinite chains of the γ-radiations with the subsequent γ-absorptions, the further γ-radiations etc inside the large masses of stellar, terrestrial and meteoric substances. Here a new quantum-mechanical approach, based on the generalized Krylov-Fock theorem, is presented for the description of the α-decay evolution with consideration of such excited states and multiple γ-radiations and γ-absorptions inside the stars and under the influence of the cosmic radiation on the earth surface. Some examples with the simple estimations are presented. It is concluded that the general (non-corrected) ＂nuclear clocks＂ do really indicate not realistic values but the upper limits of the durations of the α-decay processes. Finally, as a continuation and extension of the exposed results, a scientific program of the future investigations for students, post-graduate students and young researchers is presented, taking into account both α- and β-radioactive decays and also the possible modifications of the stellar and cosmic nucleo-synthesis. And all this can strongly influence our estimations of the universe age.

並列關鍵字

α-radioactivity ； Multiple γ-radiations and γ-absorptions ； Nuclear Chronometry in Astrophysics and Geophysics