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Littérature scientifique sur le sujet « Super-Heavy elements (SHE) »

Auteur : Grafiati

Publié le 25 janvier 2025

Mis à jour le 31 juillet 2025

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Articles de revues sur le sujet "Super-Heavy elements (SHE)"

T.Sahoo, R.L.Nayak, and A.Acharya. "THRESHOLD ENERGY VALUES FOR SUPER HEAVY ELEMENTS(SHE) FROM Z= 104 TO 117." INTERNATIONAL JOURNAL OF ENGINEERING SCIENCES & RESEARCH TECHNOLOGY 5, no. 3 (2016): 663–66. https://doi.org/10.5281/zenodo.48331.

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Super heavy elements (SHE) are the heavy elements in the periodic table.Generally transuranic and transactinide elements having Z > 92 come under this category. The surface energy,coulomb energy,threshold energies for the super heavy elements from Z=104 to 117 are calculated here. applications The to the astrophysics are discussed.  

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WIELOCH, A., Z. SOSIN, P. BAŃKA, et al. "NEW DETECTOR SYSTEM FOR SUPER HEAVY ELEMENTS DETECTION." International Journal of Modern Physics E 19, no. 04 (2010): 672–77. http://dx.doi.org/10.1142/s0218301310015084.

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A new detector system dedicated for very/super heavy elements (VHE/SHE) detection that decay by spontaneous fission is presented. Such a decay mode of nuclei can be found e.g. in the region of Z ≈100 (Fermium). Future experiments realized in the frame of French-Polish collaboration at the cyclotrons in GANIL and in the Heavy Ion Laboratory (HIL), University of Warsaw, is described. The results of test measurements made in the HIL for reactions 20 Ne (8 A . MeV )+120 Sn , 179 Au are presented.

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BOILLEY, DAVID, ANTHONY MARCHIX, DAVID WILGENBUS, YOANN LALLOUET, FLORIAN GIMBERT, and YASUHISA ABE. "WHAT CAN WE LEARN FROM THE FISSION TIME OF THE SUPER-HEAVY ELEMENTS?" International Journal of Modern Physics E 17, no. 09 (2008): 1681–93. http://dx.doi.org/10.1142/s0218301308010696.

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Recent experiments performed at GANIL with a crystal blocking technique have shown direct evidences of long fission times in the Super-Heavy Elements (SHE) region. Aimed to localize the SHE island of stability, can these experiments give access to the fission barrier and then to the shell-correction energy? In this paper, we calculate the fission time of heavy elements by using a new code, KEWPIE2, devoted to the study of the SHE. We also investigate the effect of potential structure beyond the saddle on the fission time.

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SCHINDZIELORZ, N., J. ERLER, P. KLÜPFEL, P. –G REINHARD, and G. HAGER. "FISSION OF SUPER-HEAVY NUCLEI EXPLORED WITH SKYRME FORCES." International Journal of Modern Physics E 18, no. 04 (2009): 773–81. http://dx.doi.org/10.1142/s0218301309012860.

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We present a large scale survey of life-times for spontaneous fission in the regime of super-heavy elements (SHE), i.e. nuclei with Z =104-122. This is done on the basis of the Skyrme-Hartree-Fock model. The axially symmetric fission path is computed using a quadrupole constraint. Self-consistent cranking is used for the collective masses and associated quantum corrections. The actual tunneling probability is estimated by the WKB approximation. Three typical Skyrme forces are used to explore the sensitivity of the results. Benchmarks in the regime Z =104-108 show an acceptable agreement. The g

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Solovyev, D. I., and N. D. Kovrizhnykh. "Simulations of recoil trajectories in Dubna Gas-Filled Recoil Separator 2 by GEANT4 toolkit." Journal of Instrumentation 17, no. 07 (2022): P07033. http://dx.doi.org/10.1088/1748-0221/17/07/p07033.

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Abstract Dubna Gas-Filled Recoil Separator (DGFRS-2) is a new facility at the Super Heavy Element Factory which allows us to study the properties of superheavy elements (SHEs) formed in complete fusion reactions in the femtobarn cross-section range. High dispersion and complex magnetic configuration make it difficult to tune the separator and find the optimal current values in the magnetic elements. This work presents a simulation model of the DGFRS-2 based on a GEANT4 toolkit. The main methods of trajectory simulations of heavy ions in gaseous media are discussed and several new processes are

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Bhattacharya, P., A. Sen, T. K. Ghosh, N. Majumdar, and S. Mukhopadhyay. "Development of Micro-Pattern Gaseous Detectors for Nuclear Reaction Studies." Journal of Physics: Conference Series 2349, no. 1 (2022): 012017. http://dx.doi.org/10.1088/1742-6596/2349/1/012017.

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One of the frontiers of today’s nuclear physics research is the synthesis of Super Heavy Elements (SHE). Fusion-fission dynamics, namely the competition between quasi fission and fusion is one of the key challenges to optimize the SHE. To have an insight into the dynamics, one requires the study of fission fragment mass and angular distribution near barrier energies for heavy-ion induced fission reactions. Recent successful installation of linear accelerators in India offers a unique opportunity to study the dynamics of nuclear reactions and formation process of SHE. For the effective utilizat

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Bhattacharya, Purba, Arijit Sen, Tilak Kumar Ghosh, Nayana Majumdar, and Supratik Mukhopadhyay. "Development of THGEM-based Detectors for Nuclear Fission Studies." Journal of Physics: Conference Series 2374, no. 1 (2022): 012156. http://dx.doi.org/10.1088/1742-6596/2374/1/012156.

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To optimize the exploration of Super Heavy Elements (SHE), the key challenge is to understand the dynamics of the fusion-fission through the measurements of mass and angular distribution of the fission fragments. For the detection of fission fragments, position sensitive Multi-Wire Proportional Counters are generally used due to their high gain, good temporal and position resolution. However, these detectors use fragile anode wires having a diameter of only 10 μm and therefore they are vulnerable. In the present work, a detector based on robust Thick Gaseous Electron Multiplier (THGEM) has bee

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Manjunatha, H. C., N. Manjunatha, and L. Seenappa. "Investigations on the study of entrance channel effects in synthesis of superheavy elements using Cr-induced fusion reactions." International Journal of Modern Physics E 29, no. 08 (2020): 2050061. http://dx.doi.org/10.1142/s0218301320500615.

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We have investigated the synthesis of superheavy elements using Cr-induced fusion reactions. We have studied all possible Cr-induced fusion reactions for the synthesis of super heavy nuclei [Formula: see text]. We have achieved the semi-empirical formula for fusion barrier heights ([Formula: see text]), positions ([Formula: see text]), curvature of the inverted parabola ([Formula: see text]) of Cr-induced fusion reactions for the synthesis of superheavy nuclei with atomic number range [Formula: see text]. The proposed formula produces fusion barriers of Cr-induced fusion reactions for the synt

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Rahul, R., B. Nandana, and S. Mahadevan. "Calculation of Q-value and half-life of alpha decay in super heavy elements using S-matrix theory." International Journal of Modern Physics E 29, no. 07 (2020): 2050043. http://dx.doi.org/10.1142/s0218301320500433.

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The half-life and the [Formula: see text]-value of alpha decay in several super heavy elements are calculated. The nuclear potential is computed using the double-folding method. Using the S-matrix theory, the alpha decay is treated as a scattering problem between alpha particle and the daughter nucleus. Nuclear potential was approximated by the parameterized Woods–Saxon potential. This idea has also been extended to predict the half-life and the [Formula: see text]-value of the heaviest elements of few other alpha chains.

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Kovrizhnykh, N. D., Yu Ts Oganessian, V. K. Utyonkov, et al. "First experiment at the Super Heavy Element Factory: new data from the <sup>243</sup>Am + <sup>48</sup>Ca reaction." Известия Российской академии наук. Серия физическая 87, no. 8 (2023): 1077–83. http://dx.doi.org/10.31857/s0367676523701946.

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We presented the results of the series of experiments on the synthesis of Mc isotopes in the 243Am + 48Ca reaction performed at the new separator DGFRS-2 and cyclotron DC280 of the SHE Factory at FLNR JINR. There were registered 110 new 288Mc decay chains, 10 289Mc chains, and 4 287Mc chains. Alpha decay of 268Db with an energy of 7.6–8.0 MeV, half-life \(16_{{ - 4}}^{{ + 6}}\) h and α-branch \(51_{{ - 12}}^{{ + 14}}\% \) was registered for the first time together with a new spontaneously fissioning isotope 264Lr with a half-life of \(4.8_{{ - 1.3}}^{{ + 2.2}}\,\,{\text{h}}.\) The measured cro

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Thèses sur le sujet "Super-Heavy elements (SHE)"

Donglo, Hope. "Study οf reactiοn mechanisms fοr the synthesis οf super-heavy elements". Electronic Thesis or Diss., Normandie, 2024. http://www.theses.fr/2024NORMC243.

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Cette thèse étudie le mécanisme de synthèse des éléments super-lourds (SHE) par des réactions de fusion-évaporation. Il s'agit de noyaux de numéro atomique \(Z \ge 104\) qui n'existent pas dans la nature en raison de leurs barrières de fission macroscopiques qui disparaissent. Ils sont stabilisés par une correction quantique du modèle en couches. La recherche de nouveaux SHE repousse les limites de la physique nucléaire et nous permet de mieux comprendre leur formation, leur stabilité et leur structure. Cependant, la synthèse des SHE est un défi en raison de la diminution des sections efficace

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Chapitres de livres sur le sujet "Super-Heavy elements (SHE)"

Tarantelli Francesco, Belpassi Leonardo, and Storchi Loriano. "Chemical Characterization of Super-Heavy Elements by Relativistic Four-Component DFT." In Advances in Parallel Computing. IOS Press, 2010. https://doi.org/10.3233/978-1-60750-530-3-501.

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The chemical characterization of super heavy elements (SHE), achieved by studying their interaction with a heavy metal surface, is currently of fundamental importance for the placement of new elements in the periodic table. Effects described by relativity theory on SHE chemistry are known to alter expectations dramatically. We use the 4-component Dirac-Kohn-Sham (DKS) theory in order to gain an accurate understanding of the chemical properties of the element 112 (E112) interacting with large gold clusters. The large number of heavy atoms that have to be considered in the DKS calculations requi

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Actes de conférences sur le sujet "Super-Heavy elements (SHE)"

Popescu, Domitian G., Yu E. Penionzhkevich, and S. M. Lukyanov. "High Spin Isomers and Super Heavy Elements (SHE) Synthesis." In INTERNATIONAL SYMPOSIUM ON EXOTIC NUCLEI. AIP, 2010. http://dx.doi.org/10.1063/1.3431432.

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Singh, Sauhard, Sumit K. Mishra, Yogesh Kumar Sharma, et al. "Implementation of LNG for Automotive Application as a Solution towards Sustainable Development." In WCX SAE World Congress Experience. SAE International, 2023. http://dx.doi.org/10.4271/2023-01-0325.

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<div class="section abstract"><div class="htmlview paragraph">In India, , as per mandate of hon'ble Supreme Court of India for reduction of emission due to vehicles, compressed natural gas (CNG) powered city buses and passengers cars are in use since 2000. Their usage is limited to metropolitan cities like Delhi, Mumbai, Bangalore etc. due to limitation of CNG storage and dispensing infrastructure along with low energy density storage. High energy density liquid form of natural gas storage (LNG) can overcome these difficulties and promising in near future. Simultaneously, there is

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