ON THE ELECTRON EXPULSION IN HEAVY ION NATURAL RADIOACTIVITY AND NUCLEAR FRAGMENTATION

2001 ◽  
Vol 10 (04n05) ◽  
pp. 367-372 ◽  
Author(s):  
G. STRATAN ◽  
W. SCHEID
Keyword(s):  
Electron Emission ◽  
Natural Radioactivity ◽  
Spontaneous Fission ◽  
Daughter Nucleus ◽  
Heavy Ion ◽  
Cluster Decay ◽  
Nuclear Fragmentation ◽  
Relative Probability ◽  
Α Decay ◽  
Heavy Cluster

An estimation of the relative probability of electron expulsion from inner shells of atoms following heavy cluster decay or nuclear spontaneous fission is performed. The calculation takes into account the recoil of the daughter nucleus, both in the case of dipole and quadrupole terms. The results show an enhancement of the electron emission probability in comparison with the case of α-decay.

Cluster decay in osmium isotopes using Hartree–Fock–Bogoliubov theory

2016 ◽  
Vol 31 (07) ◽  
pp. 1650045 ◽  
Author(s):  
Nithu Ashok ◽  
Deepthy Maria Joseph ◽  
Antony Joseph
Keyword(s):  
Spontaneous Fission ◽  
Daughter Nucleus ◽  
Alpha Decay ◽  
Cluster Decay ◽  
Cluster Radioactivity ◽  
Hartree Fock ◽  
Nuclear Process ◽  
Bogoliubov Theory ◽  
Os Isotopes ◽  
Spherical Nuclei

Cluster radioactivity is a rare cold nuclear process which is intermediate between alpha decay and spontaneous fission. The present work is a theoretical investigation of the feasibility of alpha decay and cluster radioactivity from proton rich Osmium (Os) isotopes with mass number ranging from 162–190. Osmium forms a part of the transition region between highly deformed and spherical nuclei. Calculations have been done using unified fission model and Hartree–Fock–Bogoliubov (HFB) theory. We have chosen only those decays with half-lives falling in measurable range. Geiger–Nuttall plot has been successfully reproduced. The isotope which is most favorable to each decay mode has a magic daughter nucleus.

STUDY OF CLUSTER RADIOACTIVITY: THE INFLUENCE OF DEFORMATION OF THE CLUSTER AND DAUGHTER NUCLEI ON CLUSTER DECAY HALF-LIVES

2013 ◽  
Vol 22 (08) ◽  
pp. 1350065 ◽  
Author(s):  
D. NADERI
Keyword(s):  
Experimental Data ◽  
Daughter Nucleus ◽  
Cluster Decay ◽  
Wkb Method ◽  
Deformed Nuclei ◽  
Heavy Cluster ◽  
Cluster Radioactivity ◽  
Neck Thickness

In this paper, the heavy cluster half-lives were calculated using the Wentzel–Kramers–Brillouin (WKB) method. First, we have considered the cluster and daughter nuclei as spherical and the half-lives have been obtained. Then, we have assumed two nuclei as deformed ones and calculations have been performed once again. Deformations of the emitted cluster and daughter nucleus have been presented in terms of elongation and neck thickness parameters. We investigated the influence of elongation and neck thickness parameters on cluster decay half-lives. Our results show that half-lives are affected by these parameters and obtained results for deformed nuclei are in better agreement with experimental data.

scholarly journals Fission and cluster decay of the76Srnucleus in the ground state and formed in heavy-ion reactions

1997 ◽  
Vol 56 (6) ◽  
pp. 3242-3247 ◽  
Author(s):  
Raj K. Gupta ◽  
Manoj K. Sharma ◽  
Sarbjit Singh ◽  
Rachid Nouicer ◽  
Christian Beck
Keyword(s):  
Ground State ◽  
Heavy Ion ◽  
Cluster Decay ◽  
Heavy Ion Reactions

Description of (Hyper-)Fragments in Hadron-Induced Reactions

Symmetry ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1887
Author(s):  
Theodoros Gaitanos
Keyword(s):  
Nuclear Reactions ◽  
Heavy Ion ◽  
Nuclear Fragmentation ◽  
Equilibrium Dynamics ◽  
Ion Collisions ◽  
Light Ions ◽  
Classical Transport ◽  
Nuclear Targets ◽  
Fragmentation Processes

In this article we review the important role of non-equilibrium dynamics in reactions induced by ions and hadron beams to understand the fragmentation processes inside hadronic media. We discuss the single-particle dynamics in specific sources such as spectators in heavy-ion collisions and residual nuclear targets in hadron-induced reactions. Particular attention is given to the dynamics of hyperons. We further discuss the question regarding the onset of local instabilities, which are relevant for the appearance of fragmentation phenomena in nuclear reactions. We apply the theoretical formalism, that is, semi-classical transport embedded with statistical methods of nuclear fragmentation, to reactions induced by light ions and hadron beams. We discuss the results of nuclear fragmentation and, in particular, examine the formation of hypernuclei. Such studies are important for obtaining a deeper understanding of the equation of state in fragmenting matter and are relevant for forthcoming experiments, such as PANDA at FAIR and J-PARC in Japan.

Heavy-ion-induced electron emission from thin carbon foils

1991 ◽  
Vol 43 (4) ◽  
pp. 2496-2500 ◽  
Author(s):  
A. Clouvas ◽  
A. Katsanos ◽  
B. Farizon-Mazuy ◽  
M. Farizon ◽  
M. J. Gaillard
Keyword(s):  
Electron Emission ◽  
Heavy Ion ◽  
Thin Carbon ◽  
Carbon Foils

scholarly journals Role of Different Model Ingredients in the Exotic Cluster-Decay of 56Ni*

2012 ◽  
Vol 57 (8) ◽  
pp. 796
Author(s):  
N.K. Dhiman
Keyword(s):  
Density Distribution ◽  
Heavy Ion Collisions ◽  
Heavy Ion ◽  
Cluster Decay ◽  
Nuclear Radius ◽  
Technical Parameters ◽  
Ion Collisions

We consider the cluster decay of 56Ni* formed in heavy-ion collisions, by using different parameters proposed by different authors for the Fermi density distribution and the nuclear radius. Our study reveals that different technical parameters do not alter significantly the structure of fractional yields. The cluster decay half-lives of different clusters lie within ±10% for different Fermi density parameters and nuclear radii and, therefore, justify the current set of parameters used in the literature for the calculation of cluster decays.

scholarly journals Use of active scintillating targets in nuclear physics experiments - Measurement of spontaneous fission

2018 ◽  
Vol 193 ◽  
pp. 04001
Author(s):  
G. Bélier ◽  
J. Aupiais ◽  
G. Sibbens ◽  
A. Moens ◽  
D. Vanleeuw
Keyword(s):  
Content Knowledge ◽  
Nuclear Physics ◽  
Spontaneous Fission ◽  
Α Decay ◽  
Physics Experiments

A novel detector has been used, in order to perform measurements of spontaneous fission to α-decay ratios for 240Pu, 242Pu and 252Cf isotopes. The detectors are based on the well-known technique of liquid scintillating counting. The principle and advantages of the use of such detectors in nuclear physics is discussed. The application to the characterization of spontaneous fission is described and it is demonstrated that highly precise measurements are possible, and that the main limit is due to the isotopic content knowledge of the measured samples.

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