Half-Lives of Superheavy Nuclei in Z = 113 Alpha Decay Chain

2008 ◽  
Vol 25 (12) ◽  
pp. 4230-4232 ◽  
Author(s):  
Dong Jian-Min ◽  
Zhang Hong-Fei ◽  
Zuo Wei ◽  
Li Jun-Qing
Keyword(s):  
Decay Chain ◽  
Alpha Decay ◽  
Superheavy Nuclei

TEST OF NL-RA1 RELATIVISTIC EFFECTIVE INTERACTION FOR THE STRUCTURE OF DEFORMED AND SUPERHEAVY NUCLEI

2012 ◽  
Vol 21 (06) ◽  
pp. 1250055 ◽  
Author(s):  
M. RASHDAN
Keyword(s):  
Effective Interaction ◽  
Mean Field Theory ◽  
Mean Field ◽  
Superheavy Element ◽  
Decay Chain ◽  
Alpha Decay ◽  
Binding Energies ◽  
Superheavy Nuclei ◽  
Relativistic Mean Field ◽  
Relative Errors

The NL-RA1 effective interaction of the relativistic mean field theory is employed to study the structure of deformed and superheavy nuclei, using an axially deformed harmonic oscillator basis. It is found that a fair agreement with the experimental data is obtained for the binding energies (BE), deformation parameters and charge radii. Comparison with NL-Z2, NLSH and NL3 interactions show that NL-Z2 gives good binding but larger radii, while NL-SH gives good radii but larger binding. The NL-RA1 interaction is also tested for the new deformed superheavy element with Z≥98. Excellent agreement with the experimental binding is obtained, where the relative error in BEs of Cf, Fm, No, Rf, Sg and Ea (Z = 110) isotopes are found to be of the order ~0.1%. The NL3 predicted larger binding and larger relative errors ~0.2–0.5%. Furthermore, the experimental Q-values of the alpha-decay of the superheavy elements 270110, 288114 and 292116 are satisfactory reproduced by NL-RA1 interaction, where the agreement is much better than that predicted by the phenomenological mass FRDM model. Furthermore, the alpha-decay chain of element 294118 are also better reproduced by NL-RA1 interaction.

Prediction of alpha-decay energy and decay half-life for unknown superheavy nuclei using resonances of exactly solvable α+nucleus potential

2012 ◽  
Vol 90 (1) ◽  
pp. 53-60
Author(s):  
Arati Devi ◽  
Basudeb Sahu ◽  
I. Mehrotra
Keyword(s):  
Half Life ◽  
Resonance Energy ◽  
Theoretical Method ◽  
Decay Chain ◽  
Alpha Decay ◽  
Neutron Number ◽  
Superheavy Nuclei ◽  
Decay Energy ◽  
Q Value ◽  
Exactly Solvable

Predictions of the results of alpha-decay energy (Q-value) and decay half-life (t1/2) are made for experimentally unknown alpha decaying systems of superheavy nuclei. Following a theoretical method proposed recently by B. Sahu, the calculations are performed using the analytical expression of the potential that simulates the nuclear+Coulomb potential of the α + daughter nucleus system. The Q-value considered as resonance energy is calculated using the behavior of the wave function, and the t1/2 is expressed analytically using the exact solutions of the potential. A global formula for the potential parameter as a function of neutron number in a given isotopic chain of nuclei is developed for the calculation of Q and t1/2. Calculations of the latter two quantities are made for the decay chain of newly discovered superheavy elements 294117, 293117, and for the isotopic chains of Z = 74 and 102. Predictions of the same parameters are made for Z = 113 and some other still unknown superheavy nuclei. It is observed that the global formula works well in evaluating correct results of Q and t1/2 for various alpha emitters.

SINGLE-PARTICLE EFFECTS IN DECAY CHAINS OF ODD-A SUPERHEAVY NUCLEI

2006 ◽  
Vol 15 (02) ◽  
pp. 457-463 ◽  
Author(s):  
A. PARKHOMENKO ◽  
A. SOBICZEWSKI
Keyword(s):  
Single Particle ◽  
Decay Chain ◽  
Alpha Decay ◽  
Superheavy Nuclei ◽  
Microscopic Approach ◽  
Transition Energies ◽  
Free Parameters ◽  
The Absolute ◽  
The One ◽  
Good Agreement

Alpha-decay chain of 271 Ds (271110) is described theoretically. Transition energies [Formula: see text] and half-lives Tα are analyzed. The energies [Formula: see text] are described within a macroscopic-microscopic approach. Single-particle excitations of the nuclei are treated in the one-quasiparticle approximation. The half-lives Tα are described by a simple 3-parameter phenomenological formula expressing them as functions of [Formula: see text]. A good agreement with measured values is obtained. Average of the absolute values of the discrepancies for [Formula: see text] is 0.17 MeV. The half-lives Tα are reproduced within a factor of 3.8, on the average. No free parameters are used in the description.

scholarly journals Extended systematics of alpha decay half lives for exotic superheavy nuclei

2016 ◽  
Vol 951 ◽  
pp. 60-74 ◽  
Author(s):  
A.I. Budaca ◽  
R. Budaca ◽  
I. Silisteanu
Keyword(s):  
Alpha Decay ◽  
Superheavy Nuclei

Alpha-decay chains of superheavy nuclei 292-296118

2018 ◽  
Author(s):  
U. K. Singh ◽  
M. Kumawat ◽  
G. Saxena ◽  
M. Kaushik ◽  
S. K. Jain
Keyword(s):  
Alpha Decay ◽  
Superheavy Nuclei

Quasiparticle structure of superheavy nuclei along theα-decay chain of115288

2015 ◽  
Vol 92 (1) ◽  
Author(s):  
A. N. Bezbakh ◽  
V. G. Kartavenko ◽  
G. G. Adamian ◽  
N. V. Antonenko ◽  
R. V. Jolos ◽  
...  
Keyword(s):  
Decay Chain ◽  
Superheavy Nuclei

Discovery of the [sup 109]Xe→[sup 105]Te→[sup 101]Sn alpha decay chain

2007 ◽  
Author(s):  
S. N. Liddick ◽  
R. Grzywacz ◽  
C. Mazzocchi ◽  
R. D. Page ◽  
K. P. Rykaczewski ◽  
...  
Keyword(s):  
Decay Chain ◽  
Alpha Decay

Calculation of Q-value and half-life of alpha-decay chains of superheavy elements using double folding method

2019 ◽  
Vol 28 (06) ◽  
pp. 1950045 ◽  
Author(s):  
B. Nandana ◽  
R. Rahul ◽  
S. Mahadevan
Keyword(s):  
Half Life ◽  
Decay Chain ◽  
Alpha Decay ◽  
Superheavy Elements ◽  
Nuclear Potential ◽  
Wkb Method ◽  
Saxon Potential ◽  
Q Value ◽  
Double Folding

[Formula: see text]-value and half-life of elements in alpha decay chain of [Formula: see text]117, [Formula: see text]117, [Formula: see text]116 and [Formula: see text]116 were calculated using the Nuclear potential generated by double folding procedure and using the WKB method treating the alpha decay as a tunneling problem. The nuclear potential was parameterized using Woods–Saxon potential. Using this approach, the [Formula: see text]-value and half-life of next heaviest element in the alpha decay chain of element [Formula: see text]116 is predicted. It is proposed to use this to predict the [Formula: see text]-value and half-life of other higher elements in different alpha decay chains.

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