scholarly journals ALPHA DECAY POTENTIAL BARRIERS AND HALF-LIVES AND ANALYTICAL FORMULA PREDICTIONS FOR SUPERHEAVY NUCLEI

2008 ◽  
Vol 17 (10) ◽  
pp. 2270-2274 ◽  
Author(s):  
GUY ROYER ◽  
HONGFEI ZHANG
Keyword(s):  
Liquid Drop ◽  
Analytical Formula ◽  
Alpha Decay ◽  
Proximity Effects ◽  
Superheavy Nuclei ◽  
Α Decay ◽  
Potential Barriers ◽  
Alpha Emitter ◽  
Decay Potential ◽  
Penetration Probability

The α decay potential barriers are determined in the cluster-like shape path within a generalized liquid drop model including the proximity effects between the α particle and the daughter nucleus and adjusted to reproduce the experimental Qα. The α emission half-lives are determined within the WKB penetration probability. Calculations using previously proposed formulae depending only on the mass and charge of the alpha emitter and Qα are also compared with new experimental alpha-decay half-lives. The agreement allows to provide predictions for the α decay half-lives of other still unknown superheavy nuclei using the Qα determined from the 2003 atomic mass evaluation of Audi, Wapstra and Thibault.

On the Stability of Superheavy Nuclei against Fission, Alpha Decay and Electron Capture

1971 ◽  
Vol 26 (4) ◽  
pp. 643-652 ◽  
Author(s):  
Jens Grumann ◽  
Tihomir Morovic ◽  
Walter Greiner
Keyword(s):  
Potential Energy ◽  
Electron Capture ◽  
Spontaneous Fission ◽  
Energy Surface ◽  
Liquid Drop ◽  
Alpha Decay ◽  
Superheavy Nuclei ◽  
Liquid Drop Model ◽  
Α Decay ◽  
The Stability

AbstractThe potential energy surface has been calculated by two methods which are compared with re­spect to spontaneous fission. In the first one essentially the sum of the single particle energies is computed as was done in a previous paper3 while in the second one the Strutinsky technique of renormalizing to a liquid drop model has been applied. Also the half-lives for electron capture are investigated together with the predictions of the half-lives for spontaneous fission and α-decay. The results support the existence of superheavy nuclei in the regions around Z = 114 and Z = 164.

scholarly journals α decay half-lives of new superheavy nuclei within a generalized liquid drop model

2006 ◽  
Vol 74 (1) ◽  
Author(s):  
Hongfei Zhang ◽  
Wei Zuo ◽  
Junqing Li ◽  
G. Royer
Keyword(s):  
Liquid Drop ◽  
Superheavy Nuclei ◽  
Liquid Drop Model ◽  
Α Decay

STRUCTURE OF SUPERHEAVY NUCLEI WITH THE GOGNY FORCE

2004 ◽  
Vol 13 (01) ◽  
pp. 79-86 ◽  
Author(s):  
J. F. BERGER ◽  
D. HIRATA ◽  
M. GIROD ◽  
J. DECHARGE
Keyword(s):  
Recent Work ◽  
Alpha Decay ◽  
Superheavy Nuclei ◽  
Α Decay ◽  
Fission Barriers ◽  
Self Consistent ◽  
Shell Gaps

This contribution summarizes the predictions obtained in the domain of superheavy nuclei from self-consistent microscopic calculations employing the Gogny force. Results concerning shell gaps, fission barriers and stability against alpha-decay are recalled. Recent work involving α-decay chains in odd nuclides is also presented and discussed.

A systematic study of alpha decay in actinide nuclei using modified generalized liquid drop model

2021 ◽  
pp. 2150013
Author(s):  
H. C. Manjunatha ◽  
G. R. Sridhar ◽  
N. Sowmya ◽  
P. S. Damodara Gupta ◽  
H. B. Ramalingam
Keyword(s):  
Experimental Data ◽  
Angular Momentum ◽  
Coulomb Interaction ◽  
Potential Barrier ◽  
Systematic Study ◽  
Liquid Drop ◽  
Alpha Decay ◽  
Liquid Drop Model ◽  
Barrier Penetration ◽  
Penetration Probability

The alpha decay half-lives of actinides within modified generalized liquid drop model (MGLDM) are investigated by the Wentzel–Kramers–Brillouin (WKB) barrier penetration probability. The potential barrier was studied taking in to account of nuclear proximity, coulomb interaction and centrifugal potential with the inclusion of angular momentum. This work predicts the alpha decay half-lives of unknown actinide nuclei such as [Formula: see text]Am, [Formula: see text]Cm, [Formula: see text]Bk, [Formula: see text]Es and [Formula: see text]No. The calculated alpha decay half-lives reproduce accurately the experimental data. The predictions provided for the alpha decay half-lives within the MGLDM may be helpful for identifying the new isotopes in this field.

ANALYTIC SOLUTION FOR THE POTENTIAL BARRIERS IN ALPHA-DECAY PROCESS FOR Po ISOTOPES

2013 ◽  
Vol 22 (11) ◽  
pp. 1350080 ◽  
Author(s):  
H. HASSANABADI ◽  
E. JAVADIMANESH ◽  
S. ZARRINKAMAR
Keyword(s):  
Ground State ◽  
Analytic Solution ◽  
Alpha Decay ◽  
Decay Process ◽  
Potential Barriers ◽  
New Formula ◽  
Penetration Probability ◽  
Good Agreement

We study the half-lives of some nuclei via the alpha-decay process in ground-state to ground-state ( g.s. → g.s. ) transitions. To go through the problem, we consider the parabola and WKB approximations to fin the penetration probability. This new formula is used to evaluate alpha-decay half-lives and a good agreement with the experiment is obtained.

α -decay half-lives of superheavy nuclei from a modified generalized liquid-drop model

2018 ◽  
Vol 98 (2) ◽  
Author(s):  
K. P. Santhosh ◽  
C. Nithya ◽  
H. Hassanabadi ◽  
Dashty T. Akrawy
Keyword(s):  
Liquid Drop ◽  
Superheavy Nuclei ◽  
Liquid Drop Model ◽  
Α Decay

scholarly journals Revisiting to the Geiger–Nuttal Relation to be Employed in the Estimation of the Half-Lives of Superheavy Nuclei

2020 ◽  
Vol 65 (2) ◽  
pp. 120
Author(s):  
F. M. A. Al-Jomaily ◽  
M. I. Khalil
Keyword(s):  
Angular Momentum ◽  
Analytical Formula ◽  
Alpha Decay ◽  
Least Square ◽  
Superheavy Nuclei ◽  
Neutron Excess ◽  
Least Square Fitting ◽  
Fitting Method ◽  
Least Square Fitting Method ◽  
Acceptable Agreement

The half-lives for the even–even (e–e), even–odd (e–o), odd–even (o–e) and odd–odd (o–o) nuclei in the range 100 < Z < 120 have been tested within the Viola–Seaborg formula (VSF) and within the analytical formula of Royer (RF). We proposed another formula (Present Work Formula or PWF) with regard for the effect of angular momentum of the alpha decay particle and with the use of the relative neutron excess (︀(N−Z)/A)︀. Our formula includes a new set of parameters found by the least square fitting method of alpha decays of 128 nuclei. We obtained the standard deviations for each of the formulas for comparison. The results show an acceptable agreement with available data. The values of the suggested theoretical coefficient (K) for the PWF show a similar behavior of half-lives with a-decay, which can be used to predict the new superheavy nuclei.

PROPERTIES OF ALPHA DECAY TO ROTATIONAL BANDS OF HEAVY NUCLEI

2010 ◽  
Vol 19 (10) ◽  
pp. 1961-1971 ◽  
Author(s):  
Y. Z. WANG ◽  
J. Z. GU ◽  
J. M. DONG ◽  
B. B. PENG
Keyword(s):  
Experimental Data ◽  
Ground State ◽  
Liquid Drop ◽  
Alpha Decay ◽  
Branching Ratios ◽  
Heavy Nuclei ◽  
Liquid Drop Model ◽  
Α Decay ◽  
Rotational Bands ◽  
Good Agreement

In the framework of the generalized liquid drop model (GLDM) and improved Royer's formula, we investigate the branching ratios and half-lives of α-decay to the members of the ground-state rotational bands of heavy even–even Fm and No isotopes. The calculated results are in good agreement with the available experimental data and some useful predictions are provided for future experiments.

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