Cluster decay of ²³⁴U and ²³²Th by the emission of neon isotopes

Abstract

We investigate the cluster emission of Ne isotopes from the nuclei and . Experiments are unable to distinguish between the isotopes and , but by establishing a method of determining the cluster, with associated preformation probability, and using a binary cluster formalism, we deduce that the most likely emitted cluster is .

An improved effective liquid drop model for cluster radioactivity

“…Furthermore, its decimal logarithm value of the half-life was measured as 15.20 s [2]. Since then, various emitted clusters have been observed, such as 20 O, 22,24−26 Ne, 28,30 Mg, and 32,34 Si [3][4][5][6][7]. These clusters are emitted from the actinide nuclei ranging from 221 Fr to 242 Cm, while the remaining residue is the double magic nucleus 208 Pb or its neighborhoods [3][4][5][6][7].…”

“…Generally, these models are divided into the following two categories. One is the fission-like model, which means the nucleus deforms continuously as it penetrates the nuclear barrier and reaches the scission configuration after running down the Coulomb barrier [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24]. The other one refers to the preformed cluster model.…”

Probable decay modes of even–even superheavy nuclei

“…Also, the emission of clusters heavier than α particle from the heavy and superheavy nuclei has gained much attention now-a-days [12][13][14][15][16][17][18][19][20][21][22][23] which was first proposed by Sandulescu, Poenaru and Greiner in 1980s [24], and eventually it was discovered by Rose and Jones in 1984 [25]. As compared to other decay channels, cluster emission occurs with branching ratios as low as 10 −9 −10 −16 relative to α-decay.…”

An improved semi-empirical relationship for cluster radioactivity *

“…To describe the cluster radioactivity, various theoretical models were proposed . Generally, these models can be divided into two categories: cluster-like model [8][9][10][11][12][13][14][15][16] and fission-like model [17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32]. For the cluster-like model, the cluster is assumed to be preformed in the parent nucleus before it penetrates the barrier.…”