About of the necessity of the modification of the nuclear chronometry methods in astrophysics and geophysics

• Main Authors: Olkhovsky, V.S., Dolinska, M.E., Doroshko, N.L.
• Format: Article
• Language: English
• Published: Національний науковий центр «Харківський фізико-технічний інститут» НАН України 2009
• Series: Вопросы атомной науки и техники
• Subjects: Ядерная физика и элементарные частицы
• Online Access: http://dspace.nbuv.gov.ua/handle/123456789/111153

In practically all known till now methods of nuclear chronometry there were usually taken into account the life-times of only fundamental states of a-radioactive nucleus. But in the processes of nuclear synthesis in stars and under the influence of the constant cosmic radiation on surfaces of planets the excitations of the a-radioactive nuclei are going on. Between them there are the states with the excited a-particles inside the parent nuclei and so with much smaller life-times. And inside the large masses of stellar, terrestrial and meteoric substances the transitions between different internal conditions of radioactive nuclei are accompanied by infinite chains of the g-radiations with the subsequent g-absorptions, the further g-radiations etc. For the description of the a-decay evolution with considering of such excited states and multiple g-radiations and g-absorptions inside stars and under the influence of the cosmic radiation on the earth surface we present the quantum-mechanical approach, which is based on the generalized Krylov-Fock theorem. Some simple estimations are also presented. They bring to the conclusion that the usual (non-corrected) "nuclear clocks" do really indicate not to realistic values but to the upper limits of the durations of the a-decay stellar and planet processes.