| Autor: |
Rodrigues, M. M. N., Duarte, S. B., Leite, T. N., Teruya, N. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 8/10/2011, Vol. 1351 Issue 1, p59-66, 8p |
| Abstrakt: |
In a previous work [1], we have calculated the one-proton emission rate of nuclei near the proton drip line, by using an analytical barrier parametrization. The calculation is based on the WKB-approximation and half-lives are obtained in good agreement with the existing experimental data for one-proton emitters. Motivated by these results, in present work, we have eliminated the artificial barrier parametrization previously used, constructing a realistic barrier composed by the superposition of a nuclear Wood-Saxon potential form plus the coulomb and centrifugal barrier. The purpose here is to see if the simple WKB-calculation is still able to reproduce recent observed experimental results for two-proton emission from 45Fe. This decay mode has been observed by Miernik et al. [2], reporting the proton energy distribution and half-life energy dependence for 45Fe simultaneous 2p-emission. For theoretical determination of the half-life and these energy distributions we evoked a statistical assumption of a pioneering Goldansky's work [3] for discussing simultaneous two-proton emission. We have shown that our calculation reproduce in quite good agreement the energy distribution and is also able to offer good half-life result with an appropriated composition of involved values of the angular momentum decay. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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