Generalization of α-Decay Cluster-Model to Nuclei Near Spherical and Deformed Shell Closures

2004 ◽  
Vol 42 (5) ◽  
pp. 745-752 ◽  
Author(s):  
Xu Chang ◽  
Ren Zhong-Zhou
Keyword(s):  
Cluster Model ◽  
Α Decay ◽  
Shell Closures

Spontaneous fission of the end product in α-decay chain of recoiled superheavy nucleus: A theoretical study

2018 ◽  
Vol 27 (05) ◽  
pp. 1850043 ◽  
Author(s):  
Amandeep Kaur ◽  
Gudveen Sawhney ◽  
Manoj K. Sharma ◽  
Raj K. Gupta
Keyword(s):  
Cluster Model ◽  
Spontaneous Fission ◽  
Theoretical Study ◽  
Superheavy Nucleus ◽  
Decay Chain ◽  
Temperature Dependent ◽  
Α Decay ◽  
Mass Distributions ◽  
Shell Closures ◽  
End Products

The temperature-dependent preformed cluster model [PCM[Formula: see text]] is employed to extend our recent work [Niyti, G. Sawhney, M. K. Sharma and R. K. Gupta, Phys. Rev. C 91 (2015) 054606] on [Formula: see text]-decay chains of various isotopes of [Formula: see text]–118 superheavy nuclei (SHN), to spontaneous fissioning nuclei [Formula: see text]Lr, [Formula: see text]Rf, [Formula: see text]Db, [Formula: see text]Rg, and [Formula: see text]Cn occurring as end products of these [Formula: see text]-decay chains. The behavior of fragment mass distribution and competitive emergence of the dominant decay mode, i.e., the [Formula: see text]-emission versus spontaneous fission (SF), are studied for identifying the most probable heavy fission fragments, along with the estimation of SF half-life times T[Formula: see text] and total kinetic energy (TKE) of the above noted isotopes of [Formula: see text]–112 nuclei decaying via the SF process. The mass distributions of chosen nuclei are clearly symmetric, independent of mass and temperature. The most preferred decay fragment is found to lie in the neighborhood of doubly magic shell closures of [Formula: see text] and [Formula: see text], with largest preformation factor [Formula: see text]. In addition, a comparative study of the “hot compact” and “cold elongated” configurations of [Formula: see text]-deformed and [Formula: see text]-oriented nuclei indicates significantly different behaviors of the two mass fragmentation yields, favoring “hot compact” configuration.

scholarly journals α-Cluster structure above double-shell closures and α-decay of 104Te

2019 ◽  
Vol 793 ◽  
pp. 8-12 ◽  
Author(s):  
M.A. Souza ◽  
H. Miyake ◽  
T. Borello-Lewin ◽  
C.A. da Rocha ◽  
C. Frajuca
Keyword(s):  
Cluster Structure ◽  
Α Decay ◽  
Shell Closures

DENSITY-DEPENDENT CLUSTER MODEL OF α DECAY

2005 ◽  
Vol 19 (15n17) ◽  
pp. 2365-2368 ◽  
Author(s):  
CHANG XU ◽  
ZHONGZHOU REN
Keyword(s):  
Nuclear Physics ◽  
Cluster Model ◽  
Daughter Nucleus ◽  
Nucleon Nucleon ◽  
Nucleon Interaction ◽  
Α Decay ◽  
Density Dependent ◽  
Density Distributions ◽  
Nucleon Nucleon Interaction ◽  
Double Folding

A new cluster model of α decay is proposed where the effective potential between α-cluster and daughter nucleus is obtained from the double folding integral of the renormalized M3Y nucleon-nucleon interaction and of the density distributions of α particle and daughter nucleus. Without introducing any extra adjustment on the potential, the new model (named as the density-dependent cluster model) can successfully reproduce the experimental half-lives of α decay within a factor of 3. The model also works well for new superheavy elements which are the current interests of nuclear physics and chemistry.

THEORETICAL CALCULATIONS ON α-DECAY HALF-LIVES BY THE DENSITY-DEPENDENT CLUSTER MODEL

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2597-2603
Author(s):  
ZHONGZHOU REN ◽  
CHANG XU
Keyword(s):  
Cluster Model ◽  
Theoretical Calculations ◽  
Light Nuclei ◽  
Α Decay ◽  
Density Dependent ◽  
Theoretical Results ◽  
Good Agreement

The theoretical calculations of α-decay half-lives for three kinds of α-emitters (even-even, even-odd, odd-odd nuclei) are systematically reviewed within the framework of the density-dependent cluster model (DDCM). The half-lives of three typical α-emitters (8 Be , 212 Po , and 270 Ds ) are discussed in detail. The good agreement between experimental and theoretical results shows that DDCM is applicable in the whole mass table from very light nuclei to heavy and superheavy ones.

Cluster model of α decay andPo212

1996 ◽  
Vol 53 (6) ◽  
pp. 2841-2848 ◽  
Author(s):  
B. Buck ◽  
J. C. Johnston ◽  
A. C. Merchant ◽  
S. M. Perez
Keyword(s):  
Cluster Model ◽  
Α Decay

SYSTEMATIC CALCULATION OF α-DECAY HALF-LIVES WITHIN GENERALIZED DENSITY-DEPENDENT CLUSTER MODEL

2010 ◽  
Vol 19 (08n09) ◽  
pp. 1592-1602 ◽  
Author(s):  
DONGDONG NI ◽  
ZHONGZHOU REN
Keyword(s):  
Wave Function ◽  
Cluster Model ◽  
Nuclear Potential ◽  
Α Decay ◽  
Density Dependent ◽  
Systematic Calculation ◽  
State Wave ◽  
Scattering State ◽  
The Difference ◽  
Double Folding

An improved version of the generalized density-dependent cluster model is presented to describe an α particle tunneling through a microscopic potential barrier. The microscopic potential is numerically constructed in the double folding model for both the Coulomb potential and the nuclear potential. The decay width is computed using the integral of the quasibound state wave function, the scattering state wave function, and the difference of potentials. We perform a systematic calculation of α-decay half-lives for even-even, odd-A, and odd-odd nuclei ranging from N = 84 to N = 126. The calculated α-decay half-lives are found to be in good agreement with the experimental values.

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