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pro vyhledávání: '"Poenaru D"'
Autor:
Poenaru, D. N., Gherghescu, R. A.
Four groups (even-even, even-odd, odd-even and odd-odd) of heavy and super-heavy nuclei are of interest for the synthesis of the isotopes with $Z=119, 120$. We report calculations of $\alpha$~decay half-lives using four models: AKRA (Akrawy); ASAF (A
Externí odkaz:
http://arxiv.org/abs/1706.04068
Autor:
Akrawy, D. T., Poenaru, D. N.
A new semi-empirical formula for calculations of $\alpha$~decay halflives is presented. It was derived from Royer relationship by introducing new parameters which are fixed by fit to a set of experimental data. We are using three sets: set A with 130
Externí odkaz:
http://arxiv.org/abs/1702.05598
Autor:
Poenaru, D. N., Gherghescu, R. A.
In a previous article published in Phys. Rev. C 94 (2016) 014309 we have shown for the first time that the best dynamical trajectory during the deformation toward fission of the superheavy nucleus $^{286}$Fl is a linearly increasing radius of the lig
Externí odkaz:
http://arxiv.org/abs/1609.04942
Autor:
Poenaru, D. N., Gherghescu, R. A.
In 1928 G. Gamow as well as Condon and Gurney gave the first explanation of alpha decay as a quantum tunnelling of a preformed particle at the nuclear surface. Soon after experimental discovery in 1984 by Rose and Jones of cluster radioactivity, conf
Externí odkaz:
http://arxiv.org/abs/1609.00847
A broad extension of periodic system into the sector of antimatter could be possible sometimes in a remote future. We expect that anti-alpha spontaneous emission from an antimatter nucleus will have the same Q-value and half-life as alpha emission fr
Externí odkaz:
http://arxiv.org/abs/1501.06792
Akademický článek
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Autor:
Poenaru, D. N., Gherghescu, R. A.
Publikováno v:
Journal of Physics G: Nuclear and Particle Physics 41 (12) (2014) 125104
Superheavy nuclei produced until now are decaying mainly by $\alpha$ emission and spontaneous fission. Calculated $\alpha$ decay half-lives are in agreement with experimental data within one order of magnitude. The discrepancy between theory and expe
Externí odkaz:
http://arxiv.org/abs/1409.3155
Publikováno v:
Phys.Rev.Lett.107:062503,2011
The concept of heavy particle radioactivity (HPR) is changed to allow emitted particles with Z_e>28 from parents with Z>110 and daughter around 208Pb. Calculations for superheavy (SH) nuclei with Z=104-124 are showing a trend toward shorter half-live
Externí odkaz:
http://arxiv.org/abs/1106.3271
Publikováno v:
Europhysics Letters (EPL), 79 (2007) 63001
Analytical relationships for the surface and curvature energies of oblate and prolate semi-spheroidal atomic clusters have been obtained. By modifying the cluster shape from a spheroid to a semi-spheroid the most stable shape was changed from a spher
Externí odkaz:
http://arxiv.org/abs/0704.2193
A new single-particle shell model is derived by solving the Schr\"odinger equation for a semi-spheroidal potential well. Only the negative parity states of the $Z(z)$ component of the wave function are allowed, so that new magic numbers are obtained
Externí odkaz:
http://arxiv.org/abs/0704.0847