[en] The aim was to study the properties of already synthesized element Z=115 which contribute to the fundamental knowledge of nuclear potentials and the resulting nuclear structure. The elements upto Z=118 have been synthesized till today with half-lives varying from a few minutes to milli-seconds. The fusion evaporation reaction of ²⁴³Am + ⁴⁸Ca, leads to the formation of ²⁹¹115 nuclei. According to the predictions, the 3n- and 4n- evaporation channels results the odd-odd isotope ²⁸⁸115 (N = 173) and odd-A isotope ²⁸⁷115 (N = 172). Here the basic motivation is to study the α-decay properties of these synthesized isotopes

[en] The discovery of α radioactivity by Rutherford and later on Gamow's theory gave a basis to successfully explain the experimental half lives using both phenomenological and microscopic models. The rapid progress in the experimental studies of the α decay of the super heavy nuclei (SHN) has resulted in the observation of many alternative α emitters in the super heavy region. An investigation of the α decay chains of the SHN is the main tool to obtain the information regarding their degree of stability and existence in nature. Even though several theoretical works can be quoted to the α decay studies of super heavy nuclei, works on odd mass nuclei are very rare. The purpose of this paper is to study the α decay and the spontaneous fission of the isotopes of the super heavy element Z = 115 and predict the α decay chains using Coulomb and proximity potential model for deformed nuclei (CPPMDN)

[en] The advancements in the nuclear beam technology have resulted in the fast growth of the nuclear chart especially in the superheavy (SH) mass region and the calculations and spontaneous fission half-lives are important in identifying the decay chains of SHE. In this paper the alpha decays properties and the mode of decay of Z = 115, 117, 118 and 119 have been analyzed using the Coulomb and proximity potential model for deformed nuclei (CPPMDN)

[en] Hitherto collected data on more than hundred α-decay chains stemming from element 115 are combined to probe some aspects of the underlying nuclear structure of the heaviest atomic nuclei yet created in the laboratory

[en] The latest additions to the periodic table are element 115 and its daughter, element 113

[en] The recognition criterion for discovery of a new chemical element includes two aspects, the characterization properties and the assignment properties. In this paper, we will discuss the status of element 115 experiments that have been performed in Dubna, Russia, highlighting the characterization and assignment properties as they specifically relate to a recent experiment. After discussing the status of what is known about the decay properties of element 115 [1], observed previously using the Dubna Gas-Filled Recoil Separator, we will discuss the prior chemical studies that have been performed on the Db descendant of element 115 [2]. Following the success of that experiment, some additional chemical information was desired. Two separation chemistries were then developed at LLNL and JINR. LLNL utilized reversed phase chromatography and JINR utilized anion exchange chromatography to perform not only +4/+5 separations, but also intra-group separations, where Nb-like and Ta-like fractions were eluted. The results from an experiment using these chemistries for the first time during December 2005 in Dubna, Russia, will be compared with prior chemical results. We will conclude with a discussion of possible enhancements to the work already performed and the current status of the future experimental plans

[en] The lifetimes of the consecutive α decay chains of recently synthesized new element 115, ²⁸⁷115 and ²⁸⁸115, have been calculated theoretically within the WKB approximation using microscopic α-nucleus interaction potentials obtained by folding in the densities of the α and the daughter nuclei with a realistic effective interaction. M3Y effective interaction, supplemented by a zero-range pseudo-potential for exchange along with the density dependence, has been used for calculating the nuclear interaction potentials. Spherical charge distributions have been used for calculating the Coulomb interaction potentials. These calculations provide consistent estimates for the lifetimes of the consecutive α decay chains of the superheavy element 115. (brief report)

[en] Analyzation of alpha decay properties and identification of Island of Stability has illuminated the theories of nuclear physics. This fundamental scientific research is the current ongoing work in the field of super heavy elements. In order to study the decay properties of super heavy elements a realistic model called as Cubic plus Yukawa plus Exponential (CYE) model is used here. This model uses a cubic potential in the pre-scission region connected by Coulomb plus Yukawa plus Exponential potential in the post scission region

No abstract available

[en] Superheavy element research relies heavily on the detection of correlated decay chains. When several chains have been detected, it is natural to ask whether they form one congruent set, or whether they should be further divided into subsets. To statistically assess the congruence between the chains in a data set, we developed a procedure to calculate a Figure-of-Merit for low-number statistics. In this work, the method is applied to the world data set of odd-Z superheavy nuclei with Z ≥ 113. Some of the postulated sets of chains are found to be congruent, while others are not. The findings are of relevance for the IUPAC and IUPAP approvals of the new elements Z = 113, 115, and 117.