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7 results on '"Harca, I."'

1. Investigation on Competing Fission Modes in 178Pt* Produced by 36Ar + 142Nd Reaction up to High Excitation Energies

Author

Kumar D., Kozulin E. M., Knyazheva G. N., Maiti M., Itkis I. M., Bogachev A. A., Novikov K. V., Cheralu M., Banerjee T., Diatlov I. N., Kozulina N. I., Pchelintsev I. V., Vorobiev I. V., Pan A. N., Prajapat R., Kumar R., Vardaci E., Trzaska W. H., Andreyev A., Harca I. M., Kumar, D., Kozulin, E. M., Knyazheva, G. N., Maiti, M., Itkis, I. M., Bogachev, A. A., Novikov, K. V., Cheralu, M., Banerjee, T., Diatlov, I. N., Kozulina, N. I., Pchelintsev, I. V., Vorobiev, I. V., Pan, A. N., Prajapat, R., Kumar, R., Vardaci, E., Trzaska, W. H., Andreyev, A., and Harca, I. M.

Subjects
General Physics and Astronomy
Abstract

The mass–energy distributions of binary fission fragments (FFs) of excited exotic nucleus 178Pt* were measured via the fusion reaction 36Ar + 142Nd at different beam energies within 158–222 MeV range using the double arm time-of-flight spectrometer CORSET. The analysis of mass–energy matrices reveals the presence of both asymmetric and symmetric modes corresponding to respective lower and higher total kinetic energy (TKE) of the fragments within 42–64 MeV excitation energy. The agreement of measured mass width with theoretical systematics and dominance of the associated symmetric TKE component at 93 MeV excitation energy indicates the significant predominance/suppression of symmetric/asymmetric mode, respectively. The most probable light and heavy mass peaks of asymmetric fission mode of 178Pt are spotted at 79 and 99 u, respectively. As inferred from the theory, the mass–TKE events observed at the highest measured excitation energy (93 MeV) endorse the presence of the fast-fission process in 178Pt* at high angular momentum.

Published
2021

2. Nucleon-induced inelastic cross sections on Ninat

Author

Olacel, A., Borcea, C., Boromiza, M., Calinescu, S., Clisu, C., Costache, C., Dessagne, Ph., Dinescu, I., Filipescu, D., Florea, N., Harca, I., Henning, G., Ionescu, A., Kerveno, M., Lica, R., Matei, A., Mihai, C., Mihai, R., Mitu, A., Negret, A., Nita, C., Nyman, M., Oprea, A., Petrone, C., Plompen, A. J. M., Sotty, C., Stan, L., Stoica, L., Suliman, G., Turturica, A., and Ujeniuc, S.

Published
2022

3. Nucleon-induced inelastic cross sections on natNi

Author

Olacel, A. and Borcea, C. and Boromiza, M. and Calinescu, S. and Clisu, C. and Costache, C. and Dessagne, Ph. and Dinescu, I. and Filipescu, D. and Florea, N. and Harca, I. and Henning, G. and Ionescu, A. and Kerveno, M. and Lica, R. and Matei, A. and Mihai, C. and Mihai, R. and Mitu, A. and Negret, A. and Nita, C. and Nyman, M. and Oprea, A. and Petrone, C. and Plompen, A. and Sotty, C. and Stan

Published
2022
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4. Investigation of fusion probabilities in the reactions with Cr52,54, Ni64, and Zn68 ions leading to the formation of Z=120 superheavy composite systems

Author

Novikov, K. V., Kozulin, E. M., Knyazheva, G. N., Itkis, I. M., Itkis, M. G., Bogachev, A. A., Diatlov, I. N., Cheralu, M., Kumar, D., Kozulina, N. I., Pan, A. N., Pchelintsev, I. V., Vorobiev, I. V., Trzaska, W. H., Heinz, S., Devaraja, H. M., Lommel, B., Vardaci, E., Spinosa, S., Di Nitto, A., Pulcini, A., Khlebnikov, S. V., Singh, Pushpendra P., Sahoo, Rudra N., Gall, B., Asfari, Z., Borcea, C., Harca, I., Filipescu, D. M., Novikov, K. V., Kozulin, E. M., Knyazheva, G. N., Itkis, I. M., Itkis, M. G., Bogachev, A. A., Diatlov, I. N., Cheralu, M., Kumar, D., Kozulina, N. I., Pan, A. N., Pchelintsev, I. V., Vorobiev, I. V., Trzaska, W. H., Heinz, S., Devaraja, H. M., Lommel, B., Vardaci, E., Spinosa, S., Di Nitto, A., Pulcini, A., Khlebnikov, S. V., Singh, Pushpendra P., Sahoo, Rudra N., Gall, B., Asfari, Z., Borcea, C., Harca, I., and Filipescu, D. M.

Abstract

Background: The formation of superheavy nuclei in fusion reactions is suppressed by a competing quasifission process. The competition between the formation of the compound nucleus and the quasifission depends strongly on the reaction entrance channel. Purpose: The investigation of fission and quasifission processes in the formation of Z=120 superheavy composite systems in the 52,54Cr+248Cm and 68Zn+232Th reactions, and their comparison with the 64Ni+238U reaction at energies in the vicinity of the Coulomb barrier. Methods: Mass-energy distributions of fissionlike fragments formed in the reactions 52,54Cr+248Cm and 68Zn+232Th at energies near the Coulomb barrier were measured using the double-arm time-of-flight spectrometer CORSET. Results: Capture cross sections for the reactions under investigation were measured. The most probable fragment masses and total kinetic energies as well as their variances in dependence on the interaction energy were studied for asymmetric and symmetric fragments. The fusion probabilities were estimated from the analysis of mass-energy distributions. Conclusions: The estimated fusion probability drops down by a factor of 103 in the 54Cr+248Cm reaction compared to the reactions of 48Ca ions with actinides. Among the studied reactions, the 54Cr+248Cm is the most favorable one for the production of the superheavy element with Z=120.

Published
2020

5. Shape Coexistence at Zero Spin in Ni64 Driven by the Monopole Tensor Interaction

Author

Mărginean, N., Little, D., Tsunoda, Y., Leoni, S., Janssens, R. V. F., Fornal, B., Otsuka, T., Michelagnoli, C., Stan, L., Crespi, F. C. L., Costache, C., Lica, R., Sferrazza, M., Turturica, A., Ayangeakaa, A. D., Auranen, K., Barani, M., Bender, P. C., Bottoni, S., Boromiza, M., Bracco, A., Călinescu, S., Campbell, C. M., Carpenter, M. P., Chowdhury, P., Ciemała, M., Cieplicka-Oryǹczak, N., Cline, D., Clisu, C., Crawford, H. L., Dinescu, I. E., Dudouet, J., Filipescu, D., Florea, N., Forney, A. M., Fracassetti, S., Gade, A., Gheorghe, I., Hayes, A. B., Harca, I., Henderson, J., Ionescu, A., Iskra, Ł. W., Jentschel, M., Kandzia, F., Kim, Y. H., Kondev, F. G., Korschinek, G., Köster, U., Krishichayan, Krzysiek, M., Lauritsen, T., Li, J., Mărginean, R., Maugeri, E. A., Mihai, C., Mihai, R. E., Mitu, A., Mutti, P., Negret, A., Niţă, C. R., Olăcel, A., Oprea, A., Pascu, S., Petrone, C., Porzio, C., Rhodes, D., Seweryniak, D., Schumann, D., Sotty, C., Stolze, S. M., Şuvăilă, R., Toma, S., Ujeniuc, S., Walters, W. B., Wu, C. Y., Wu, J., Zhu, S., and Ziliani, S.

Subjects
ddc
Published
2019

6. Investigating Mass–Energy Distributions of Fragments Produced in the 32S + 232Th → 264Sg Reaction at Energies Below and Near the Coulomb Barrier

Author

Deepak Kumar, M. Cheralu, I. N. Diatlov, I. V. Pchelintsev, A. Di Nitto, E. I. Galkina, A. A. Bogachev, K. V. Novikov, C. Borcea, I. V. Vorobiev, S. Heinz, E. M. Kozulin, I. M. Harca, W. H. Trzaska, Emanuele Vardaci, A. Pan, I. M. Itkis, G. N. Knyazheva, S. Spinosa, A. Pulcini, Bettina Lommel, N. I. Kozulina, Galkina, E. I., Kozulin, E. M., Knyazheva, G. N., Itkis, I. M., Bogachev, A. A., Diatlov, I. N., Cheralu, M., Kumar, D., Kozulina, N. I., Novikov, K. V., Pan, A. N., Pchelintsev, I. V., Vorobiev, I. V., Trzaska, W. H., Heinz, S., Lommel, B., Vardaci, E., Spinosa, S., Di Nitto, A., Pulcini, A., Borcea, C., and Harca, I.

Subjects
Physics, Mass energy, Fission, Nuclear Theory, Hadron, General Physics and Astronomy, Coulomb barrier, Ion, medicine.anatomical_structure, medicine, Atomic physics, Nuclear Experiment, Nucleus, Excitation
Abstract

The mass-energy distributions of fragments of the reaction 32S + 232Th leading to the formation of 264Sg (Z = 106) at energies of incident ions 32S of 165, 181 and 200 MeV are measured. The contribution from the quasifission process is found at energies below and above the Coulomb barrier in the region of symmetric masses (АCN/2 ± 20). A high-energy symmetric fission mode is found at an energy of 165 MeV, which corresponds to the excitation energy of the compound 264Sg nucleus 45 MeV.

Published
2021

7. Formation and Decay of the Composite System Z = 120 in Reactions with Heavy Ions at Energies Near the Coulomb Barrier

Author

K. V. Novikov, B. Gall, M. G. Itkis, G. N. Knyazheva, M. Cheralu, I. M. Harca, Emanuele Vardaci, I. M. Itkis, N. Tortorelli, I. N. Diatlov, Zouhair Asfari, I. V. Vorobiev, Deepak Kumar, A. V. Karpov, I. V. Pchelintsev, Vladimir Loginov, N. I. Kozulina, A. Bondarchenko, Pushpendra Singh, C. Borcea, S. Heinz, E. M. Kozulin, Wladyslaw Henryk Trzaska, Novikov, K. V., Kozulin, E. M., Knyazheva, G. N., Itkis, I. M., Karpov, A. V., Itkis, M. G., Diatlov, I. N., Cheralu, M., Gall, B., Asfari, Z., Kozulina, N. I., Kumar, D., Pchelintsev, I. V., Loginov, V. N., Bondarchenko, A. E., Singh, P. P., Vorobiev, I. V., Heinz, S., Trzaska, W. H., Vardaci, E., Tortorelli, N., Borcea, C., Harca, I., Institut Pluridisciplinaire Hubert Curien (IPHC), and Université de Strasbourg (UNISTRA)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)

Subjects
010302 applied physics, Physics, 010308 nuclear & particles physics, Fission, Hadron, Composite number, General Physics and Astronomy, Coulomb barrier, Actinide, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], 01 natural sciences, 7. Clean energy, Ion, 0103 physical sciences, Production (computer science), Atomic physics, Energy (signal processing)
Abstract

International audience; The mass, energy and angular distributions of binary fragments formed in the reactions $^{64}$Ni + $^{238}$U, $^{58}$Fe + $^{244}$Pu, $^{52}$Cr + $^{248}$Cm, $^{54}$Cr + $^{248}$Cm at energies near the Coulomb barrier have been measured. The analysis of energy distributions of the symmetric fragments with mass numbers ${{{{A}_{{{\text{CN}}}}}} \mathord{\left/ {\vphantom {{{{A}_{{{\text{CN}}}}}} 2}} \right. \kern-0em} 2} \pm 20$ formed in these reactions have been applied to separate compound nucleus fission and quasi-fission. The estimated fusion probability for the reactions Cr, Fe, and Ni ions with actinide targets shows an exponential dependence on the mean fissility parameter of the system and shows also that reaction with Cr ions is more favorable for production of the super heavy element with Z = 120.

Published
2020

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