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13 results on '"Tortorelli, N."'

1. Increasing the rate capability for the cryogenic stopping cell of the FRS Ion Catcher

Author

Zhao, J. W., Amanbayev, D., Dickel, T., Miskun, I., Plass, W. R., Tortorelli, N., Andres, S. Ayet San, Beck, Soenke, Bergmann, J., Brencic, Z., Constantin, P., Geissel, H., Greiner, F., Groef, L., Hornung, C., Kuzminzuk, N., Kripko-Koncz, G., Mardor, I., Pohjalainen, I., Scheidenberger, C., Thirolf, P. G., Bagchi, S., Haettner, E., Kazantseva, E., Kostyleva, D., Oberstedt, A., Pietri, S., Reiter, M. P., Tanaka, Y. K., Wada, M., Balabanski, D. L., Benyaming, D., Harakeh, M. N., Hubbard, N., Kalantar-Nayestanaki, N., Mollaebrahimi, A., Mukhab, I., Narang, M., Niwasel, T., Patyk, Z., Purushothaman, S., Rotaru, A., Spataruf, A., Stanico, G., Vencelje, M., Weickb, H., Yu, J., and Collaboration, the Super-FRS Experiment

Subjects
Physics - Instrumentation and Detectors, Nuclear Experiment
Abstract

At the FRS Ion Catcher (FRS-IC), projectile and fission fragments are produced at relativistic energies, separated in-flight, energy-bunched, slowed down, and thermalized in the ultra-pure helium gas-filled cryogenic stopping cell (CSC). Thermalized nuclei are extracted from the CSC using a combination of DC and RF electric fields and gas flow. This CSC also serves as the prototype CSC for the Super-FRS, where exotic nuclei will be produced at unprecedented rates making it possible to go towards the extremes of the nuclear chart. Therefore, it is essential to efficiently extract thermalized exotic nuclei from the CSC under high beam rate conditions, in order to use the rare exotic nuclei which come as cocktail beams. The extraction efficiency dependence on the intensity of the impinging beam into the CSC was studied with a primary beam of 238U and its fragments. Tests were done with two different versions of the DC electrode structure inside the cryogenic chamber, the standard 1 m long and a short 0.5 m long DC electrode. In contrast to the rate capability of 10^4 ions/s with the long DC electrode, results show no extraction efficiency loss up to the rate of 2x10^5 ions/s with the new short DC electrode. This order of magnitude increase of the rate capability paves the way for new experiments at the FRS-IC, including exotic nuclei studies with in-cell multi-nucleon transfer reactions. The results further validate the design concept of the CSC for the Super-FRS, which was developed to effectively manage beams of even higher intensities.

Published
2023

2. A compact start time counter using plastic scintillators readout with MPPC arrays for the WASA-FRS HypHI experiment

Author

Liu, E., Drozd, V., Ekawa, H., Escrig, S., Gao, Y., He, Y., Kasagi, A., Nakagawa, M., Ong, H., Rappold, C., Sekiya, R., Saito, T.R., Tang, X., Tanaka, Y.K., Wang, H., Yanai, A., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K.-H., Benlliure, J., Brencic, Z., Dickel, T., Dubey, S., Feijoo-Fontán, M., Fujioka, H., Geissel, H., Goldenbaum, F., González, A. Graña, Haettner, E., Harakeh, M.N., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Lommel, B., Minami, S., Morrissey, D.J., Moskal, P., Mukha, I., Muneem, A., Nakazawa, K., Nociforo, C., Pietri, S., Pochodzalla, J., Purushothaman, S., Rocco, E., Rodríguez-Sánchez, J.L., Roy, P., Ruber, R., Schadmand, S., Scheidenberger, C., Schwarz, P., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tortorelli, N., Vencelj, M., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yoshida, J., and Zhao, J.

Published
2024
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3. Novel device to study double-alpha decay at the FRS Ion Catcher

Author

Varga, L., Wilsenach, H., Hall, O., Dickel, T., Reiter, M.P., Amanbayev, D., Davinson, T., Morrissey, D.J., Pohjalainen, I., Tortorelli, N., Yu, J., Zhao, J., Ayet, S., Beck, S., Bergmann, J., Ge, Z., Geissel, H., Heitz, L., Hornung, C., Kalantar-Nayestanaki, N., Khan, E., Kripko-Koncz, G., Mardor, I., Narang, M., Plass, W., Scheidenberger, C., Simonov, M., Singh, S.K., State, A., Theisen, C., Vandebrouck, M., and Woods, P.J.

Published
2024
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4. Increasing the rate capability for the cryogenic stopping cell of the FRS Ion Catcher

Author

Zhao, J.W., Amanbayev, D., Dickel, T., Miskun, I., Plaß, W.R., Tortorelli, N., San Andrés, S. Ayet, Beck, S., Bergmann, J., Brencic, Z., Constantin, P., Geissel, H., Greiner, F., Gröf, L., Hornung, C., Kuzminchuk, N., Kripkó-Koncz, G., Mardor, I., Pohjalainen, I., Scheidenberger, C., Thirolf, P.G., Bagchi, S., Haettner, E., Kazantseva, E., Kostyleva, D., Oberstedt, A., Pietri, S., Reiter, M.P., Tanaka, Y.K., Wada, M., Balabanski, D.L., Benyamin, D., Harakeh, M.N., Hubbard, N., Kalantar-Nayestanaki, N., Mollaebrahimi, A., Mukha, I., Narang, M., Niwase, T., Patyk, Z., Purushothaman, S., Rotaru, A., Spǎtaru, A., Stanic, G., Vencelj, M., Weick, H., and Yu, J.

Published
2024
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5. The WASA-FRS project at GSI and its perspective

Author

Saito, T.R., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K.-H., Benlliure, J., Brencic, Z., Dickel, T., Drozd, V., Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontán, M., Fujioka, H., Gao, Y., Geissel, H., Goldenbaum, F., González, A. Graña, Haettner, E., Harakeh, M.N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Lommel, B., Metag, V., Minami, S., Morrissey, D.J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H.J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodríguez-Sánchez, J.L., Roy, P., Ruber, R., Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tanaka, Y.K., Tang, X., Tortorelli, N., Vencelj, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., and Zhao, J.

Published
2023
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6. The slow control system of the FRS Ion Catcher

Author

State, A.N., Beck, S., Amanbayev, D., Balabanski, D.L., Brand, H., Constantin, P., Dickel, T., Hornung, C., Nichita, D., Plaß, W.R., Roesch, H., Rotaru, A., Scheidenberger, C., Siebring, J., Spataru, A., Tortorelli, N., and Zhao, J.

Published
2022
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7. Study of light hypernuclei in Europe: The hypertriton and nnΛ puzzles

Author

Rappold C., Achenbach P., Alibrahim Alfaki H., Amjad F., Armstrong M., Behr K.-H., Benlliure J., Brencic Z., Dickel T., Drozd V., Dubey S., Ekawa H., Escrig S., Feijoo-Fontan M., Fujioka H., Gao Y., Geissel H., Goldenbaum F., Graña Gonzalez A., Haettner E., Harakeh M. N., He Y., Heggen H., Hornung C., Hubbard N., Itahashi K., Iwasaki M., Kalantar-Nayestanaki N., Kasagi A., Kavatsyuk M., Kazantseva E., Khreptak A., Kindler B., Knoebel R., Kollmus H., Kostyleva D., Kraft-Bermuth S., Kurz N., Liu E., Lommel B., Metag V., Minami S., Morrissey D.J., Moskal P., Mukha I., Muneem A., Nakagawa M., Nakazawa K., Nociforo C., Ong H.J., Pietri S., Pochodzalla J., Purushothaman S., Rocco E., Rodríguez-Sánchez J.L., Roy P., Ruber R., Saito T.R., Schadmand S., Scheidenberger C., Schwarz P., Sekiya R., Serdyuk V., Skurzok M., Streicher B., Suzuki K., Szczepanczyk B., Tanaka Y. K., Tang X., Tortorelli N., Vencelj M., Wang H., Weber T., Weick H., Will M., Wimmer K., Yamamoto A., Yanai A., Yoshida J., and Zhao J.

Subjects
Physics, QC1-999
Abstract

The current understanding of light hypernuclei, which are sub-atomic nuclei with strangeness, is being challenged and studied in detail by several European research groups and collaborations. In recent years, studies of hypernuclei using high-energy heavy ion beams have reported unexpected results on the three-body hypernuclear state 3ΛH, named the hypertriton. For some time, reports of a shorter lifetime and larger binding energy than what was previously accepted have created a puzzling situation for its theoretical description; this is known as the "hypertriton puzzle". With the inclusion of the most recent experimental measurements, the current status of the hypertriton puzzle is evolving. Additionally, the possible neutral bound state of a Λ hyperon with two neutrons, nnΛ, has raised questions about our understanding of the formation of light hypernuclei either in bound or resonance states. These results have initiated several ongoing experimental programs all over the world to study these three-body hypernuclear states precisely. We are studying these light hypernuclear states by employing heavy ion beams at 2AGeV on a fixed carbon target with the WASA detector system and the Fragment Separator (FRS) at GSI. The WASA-FRS experimental campaign was performed during the first quarter of 2022, and this paper presents a short overview of the campaign and how it seeks to tackle the hypertriton and nnΛ puzzles. Data analysis is ongoing, and several preliminary results will be reported.

Published
2023
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8. Formation and Decay of the Composite System Z = 120 in Reactions with Heavy Ions at Energies Near the Coulomb Barrier

Author

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., and Harca, I.

Published
2020
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9. WASA-FRS EXPERIMENTS IN FAIR PHASE-0 AT GSI

Author

Tanaka, Y. K., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K. -H, Benlliure, J., Brencic, Z., Dickel, T., Drozd, V, Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontan, M., Fujioka, H., Gao, Y., Geissel, H., Goldenbaum, F., Gonzalez, A. Grana, Haettner, E., Harakeh, M. N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Lommel, B., Metag, V., Minami, S., Morrissey, D. J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H. J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodriguez-Sanchez, J. L., Roy, P., Ruber, Roger, Saito, T. R., Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tang, X., Tortorelli, N., Vencel, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., Zhao, J., Tanaka, Y. K., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K. -H, Benlliure, J., Brencic, Z., Dickel, T., Drozd, V, Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontan, M., Fujioka, H., Gao, Y., Geissel, H., Goldenbaum, F., Gonzalez, A. Grana, Haettner, E., Harakeh, M. N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Lommel, B., Metag, V., Minami, S., Morrissey, D. J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H. J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodriguez-Sanchez, J. L., Roy, P., Ruber, Roger, Saito, T. R., Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tang, X., Tortorelli, N., Vencel, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., and Zhao, J.

Abstract

We have developed a new and unique experimental setup integrating the central part of the Wide Angle Shower Apparatus (WASA) into the Fragment Separator (FRS) at GSI. This combination opens up possibilities of new experiments with high-resolution spectroscopy at forward 0 and measurements of light decay particles with nearly full solid-angle acceptance in coincidence. The first series of the WASA-FRS experiments have been successfully carried out in 2022. The developed experimental setup and two physics experiments performed in 2022 including the status of the preliminary data analysis are introduced.

Published
2023
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10. Studies of three-and four-body hypernuclei with heavy-ion beams, nuclear emulsions and machine learning

Author

Saito, T. R., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K. -H, Benlliure, J., Brencic, Z., Dickel, T., Drozd, V., Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontan, M., Gao, Y., Geissel, H., Goldenbaum, F., Gonzalez, A. Grana, Haettner, E., Harakeh, M. N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Minami, S., Morrissey, D. J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H. J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodriguez-Sanchez, J. L., Roy, P., Ruber, Roger, Saito, N., Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Sugimoto, S., Suzuki, K., Szczepanczyk, B., Taki, M., Tanaka, Y. K., Tang, X., Tortorelli, N., Vencelj, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., Yoshimoto, M., Zhao, J., Saito, T. R., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K. -H, Benlliure, J., Brencic, Z., Dickel, T., Drozd, V., Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontan, M., Gao, Y., Geissel, H., Goldenbaum, F., Gonzalez, A. Grana, Haettner, E., Harakeh, M. N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Minami, S., Morrissey, D. J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H. J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodriguez-Sanchez, J. L., Roy, P., Ruber, Roger, Saito, N., Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Sugimoto, S., Suzuki, K., Szczepanczyk, B., Taki, M., Tanaka, Y. K., Tang, X., Tortorelli, N., Vencelj, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., Yoshimoto, M., and Zhao, J.

Abstract

Interests on few-body hypernuclei have been increased by recent results of experiments employing relativistic heavy ion beams. Some of the experiments have revealed that the lifetime of the lightest hypernucleus, hypertriton, is significantly shorter than 263 ps which is expected by considering the hypertriton to be a weakly-bound system. The STAR collaboration has also measured the hypertriton binding energy, and the deduced value is contradicting to its formerly known small binding energy. These measurements have indicated that the fundamental physics quantities of the hypertriton such as its lifetime and binding energy have not been understood, therefore, they have to be measured very precisely. Furthermore, an unprecedented Lambda nn bound state observed by the HypHI collaboration has to be studied in order to draw a conclusion whether or not such a bound state exists. These three-body hypernuclear states are studied by the heavy-ion beam data in the WASA-FRS experiment and by analysing J-PARC E07 nuclear emulsion data with machine learning.

Published
2023
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11. The WASA-FRS project at GSI and its perspective

Author

Saito, T. R., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K. H., Benlliure, J., Brencic, Z., Dickel, T., Drozd, V., Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontan, M., Fujioka, H., Gao, Y., Geissel, H., Goldenbaum, F., Gonzalez, A. Grafia, Haettner, E., Harakeh, M. N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Lommel, B., Metag, V., Minami, S., Morrissey, D. J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H. J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodriguez-Sanchez, J. L., Roy, P., Ruber, Roger, Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tanaka, Y. K., Tang, X., Tortorelli, N., Vencelj, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., Zhao, J., Saito, T. R., Achenbach, P., Alfaki, H. Alibrahim, Amjad, F., Armstrong, M., Behr, K. H., Benlliure, J., Brencic, Z., Dickel, T., Drozd, V., Dubey, S., Ekawa, H., Escrig, S., Feijoo-Fontan, M., Fujioka, H., Gao, Y., Geissel, H., Goldenbaum, F., Gonzalez, A. Grafia, Haettner, E., Harakeh, M. N., He, Y., Heggen, H., Hornung, C., Hubbard, N., Itahashi, K., Iwasaki, M., Kalantar-Nayestanaki, N., Kasagi, A., Kavatsyuk, M., Kazantseva, E., Khreptak, A., Kindler, B., Knoebel, R., Kollmus, H., Kostyleva, D., Kraft-Bermuth, S., Kurz, N., Liu, E., Lommel, B., Metag, V., Minami, S., Morrissey, D. J., Moskal, P., Mukha, I., Muneem, A., Nakagawa, M., Nakazawa, K., Nociforo, C., Ong, H. J., Pietri, S., Pochodzalla, J., Purushothaman, S., Rappold, C., Rocco, E., Rodriguez-Sanchez, J. L., Roy, P., Ruber, Roger, Schadmand, S., Scheidenberger, C., Schwarz, P., Sekiya, R., Serdyuk, V., Skurzok, M., Streicher, B., Suzuki, K., Szczepanczyk, B., Tanaka, Y. K., Tang, X., Tortorelli, N., Vencelj, M., Wang, H., Weber, T., Weick, H., Will, M., Wimmer, K., Yamamoto, A., Yanai, A., Yoshida, J., and Zhao, J.

Abstract

A novel technique to study bound states of exotic hadrons in subatomic nuclei, such as hypernuclei and mesic nuclei, has been developed by employing the Fragment Separator FRS and the WASA central detector at GSI. Two experiments, S447 for studying light hypernuclei, especially hypertriton and a Ann bound state, and S490 for searching for ri' mesic-nuclei, were recently performed. Data analyses are currently in progress, and light charged particles such as protons and x & PLUSMN; are clearly observed and identified in the both experiments. For S447, light nuclear fragments that can also be residual nuclei from decays of hypernuclei of interests have been analysed by the FRS, and a momentum resolution, Ap/p, of 5 x 10-4 has been achieved. Further data analyses are to be completed. The WASA-FRS project will be continued and extended with the FRS at FAIR Phase 0, and upgrading of the WASA magnet and detectors is currently in progress. Furthermore, construction of a larger detector system with the Super-FRS at FAIR Phase 1 is also under consideration.

Published
2023
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12. WASA-FRS Experiments in FAIR Phase-0 at GSI

Author

Tanaka, Y.K., primary, Achenbach, P., additional, Alibrahim Alfaki, H., additional, Amjad, F., additional, Armstrong, M., additional, Behr, K.-H., additional, Benlliure, J., additional, Brencic, Z., additional, Dickel, T., additional, Drozd, V., additional, Dubey, S., additional, Ekawa, H., additional, Escrig, S., additional, Feijoo-Fontán, M., additional, Fujioka, H., additional, Gao, Y., additional, Geissel, H., additional, Goldenbaum, F., additional, Graña González, A., additional, Haettner, E., additional, Harakeh, M.N., additional, He, Y., additional, Heggen, H., additional, Hornung, C., additional, Hubbard, N., additional, Itahashi, K., additional, Iwasaki, M., additional, Kalantar-Nayestanaki, N., additional, Kasagi, A., additional, Kavatsyuk, M., additional, Kazantseva, E., additional, Khreptak, A., additional, Kindler, B., additional, Knoebel, R., additional, Kollmus, H., additional, Kostyleva, D., additional, Kraft-Bermuth, S., additional, Kurz, N., additional, Liu, E., additional, Lommel, B., additional, Metag, V., additional, Minami, S., additional, Morrissey, D.J., additional, Moskal, P., additional, Mukha, I., additional, Muneem, A., additional, Nakagawa, M., additional, Nakazawa, K., additional, Nociforo, C., additional, Ong, H.J., additional, Pietri, S., additional, Pochodzalla, J., additional, Purushothaman, S., additional, Rappold, C., additional, Rocco, E., additional, Rodríguez-Sánchez, J.L., additional, Roy, P., additional, Ruber, R., additional, Saito, T.R., additional, Schadmand, S., additional, Scheidenberger, C., additional, Schwarz, P., additional, Sekiya, R., additional, Serdyuk, V., additional, Skurzok, M., additional, Streicher, B., additional, Suzuki, K., additional, Szczepanczyk, B., additional, Tang, X., additional, Tortorelli, N., additional, Vencelj, M., additional, Wang, H., additional, Weber, T., additional, Weick, H., additional, Will, M., additional, Wimmer, K., additional, Yamamoto, A., additional, Yanai, A., additional, Yoshida, J., additional, and Zhao, J., additional

Published
2023
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13. 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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