A new barrier penetration formula and its application to alpha-decay half-lives

Details A new barrier penetration formula and its application to alpha-decay half-lives A new barrier penetration formula and its application to alpha-decay half-lives

2009-09-09

arxiv.org/abs/0909.1602v1

Int. J. Mod. Phys. E 19 (2010) 359-370

Physics

Nuclear Physics

Nuclear Theory

RevTeX4, 7 pages, 3 figures; to be published in Int. J. Mod. Phys. E

Scientific paper

10.1142/S0218301310014790

Starting from the WKB approximation, a new barrier penetration formula is proposed for potential barriers containing a long-range Coulomb interaction. This formula is especially proper for the barrier penetration with penetration energy much lower than the Coulomb barrier. The penetrabilities calculated from the new formula agree well with the results from the WKB method. As a first attempt, this new formula is used to evaluate alpha decay half-lives of atomic nuclei and a good agreement with the experiment is obtained.

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