Proton emission half-lives within a Gamow-like model

Abstract

Abstract. Proton emission is described using a model which has previously given good results in the description of α and cluster radioactivity. The simple phenomenological formalism, based on the Gamow theory for alpha decay, is now extended by including the centrifugal term. The model contains only one parameter: the effective nuclear radius constant. Its value was once found for alpha and cluster emitters. A good agreement with the experimental half-lives for proton radioactivity is achieved without any additional fitting procedures to the data for proton emission.

Proton emission with a screened electrostatic barrier

“…In order to have a more insightful opinion on the relative success of the two approaches, one plotted the corresponding deviations of the log 10 T 1/2 between theory and experiment in Fig. 2 [10,12,16,17,19], including UDLP. The origin of this inconsistency could be ascribed to the transitional character of these nuclei, which mark the end of the lower Z sequence of strongly prolate emitters [17,51,52].…”

Superheavy Nuclei and Related Phenomena

“…All the possible proton emitters of Ds within 256 ≤ A ≤ 275 are listed in Table 1. The one proton decay half-lives were calculated using Gamow like model [7]. The half-lives for one proton radioactivity for the isotopes [256][257][258][259][260] Ds are also shown in …”

“…Nuclei lying above the proton drip line with positive disintegration energy are proton unstable and decay through proton emission. Up to now several attempts [5][6][7] have been made to explain the phenomenon of proton decay. Alpha decay and spontaneous fission are the two dominant decay modes of superheavy nuclei.…”

Effect of Oriented Nuclei on the Competing Modes of α and One-Proton Radioactivities in the Vicinity of Z = 82 Shell Closure

“…In the earliest attempts, the Coulomb potential plus the Woods-Saxon potential have been put forwarded to explore the same [5]. Furthermore, several theoretical models such as the unified fission model (UFM) [6], the generalized liquid drop model [7] and the Gamow-like model [8] provide excellent estimates for the lifetimes of proton radioactivity. Therefore, all the above approaches are considered as standard tools to describe proton radioactivity.…”