http://repository.iitr.ac.in/handle/123456789/25351| Title: | Study of non-fusion products in the Ti50+Cf249 reaction |
| Authors: | Di Nitto A. Khuyagbaatar J. Ackermann D. Andersson L.-L. Badura E. Block M. Brand H. Conrad I. Cox D.M. Düllmann C.E. Dvorak J. Eberhardt K. Ellison P.A. Esker N.E. Even J. Fahlander C. Forsberg U. Gates J.M. Golubev P. Gothe O. Gregorich K.E. Hartmann W. Herzberg R.D. Heßberger F.P. Hoffmann J. Hollinger R. Hübner A. Jäger E. Kindler B. Klein S. Kojouharov I. Kratz J.V. Krier J. Kurz N. Lahiri S. Lommel B. Maiti, Moumita Mändl R. Merchán E. Minami S. Mistry A.K. Mokry C. Nitsche H. Omtvedt J.P. Pang G.K. Renisch D. Rudolph D. Runke J. Sarmiento L.G. Schädel M. Schaffner H. Schausten B. Semchenkov A. Steiner J. Thörle-Pospiech P. Trautmann N. Türler A. Uusitalo J. Ward D. Wegrzecki M. Wieczorek P. Wiehl N. Yakushev A. Yakusheva V. |
| Published in: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics |
| Abstract: | The isotopic distribution of nuclei produced in the 50Ti + 249Cf reaction has been studied at the gas-filled recoil separator TASCA at GSI Darmstadt, which separates ions according to differences in magnetic rigidity. The bombardment was performed at an energy around the Bass barrier and with the TASCA magnetic fields set for collecting fusion-evaporation reaction products. Fifty-three isotopes located “north-east” of 208Pb were identified as recoiling products formed in non-fusion channels of the reaction. These recoils were implanted with energies in two distinct ranges; besides one with higher energy, a significant low-energy contribution was identified. The latter observation was not expected to occur according to kinematics of the known types of reactions, namely quasi-elastic, multi-nucleon transfer, deep-inelastic collisions or quasifission. The present observations are discussed within the framework of two-body kinematics passing through the formation of a composite system. © 2018 The Authors |
| Citation: | Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 784: 199-205 |
| URI: | https://doi.org/10.1016/j.physletb.2018.07.058 http://repository.iitr.ac.in/handle/123456789/25351 |
| Issue Date: | 2018 |
| Publisher: | Elsevier B.V. |
| Keywords: | Multi-nucleon transfer reactions Production of radioactive nuclei Quasifission α decay |
| ISSN: | 3702693 |
| Author Scopus IDs: | 15764317200 14826956100 55143078600 56021645400 6701338581 8842274300 8915069900 57200626454 43060973800 6602625278 56207480900 7005626196 56350420600 55887961000 36117802600 22960890000 55944819000 15044162000 6602398402 36623668800 7004333958 7201802182 7005241243 7003327706 35069598900 8586147800 7004099613 7102107431 6602738844 57214065226 6603495374 7004752304 36118124500 26643529500 35548177300 8252235900 57215382247 57196698650 24071575400 55627334600 55857155900 14919507100 7006005601 6602734505 8892149900 55037265800 7101736042 36118370500 54884798400 8956603900 7003879236 6602502353 6603061506 7201651824 36099672400 7006549037 7006724675 7006528106 57210551112 12241409400 42962843900 6602549169 7004061403 55792738600 |
| Author Affiliations: | Di Nitto, A., Johannes Gutenberg University Mainz, Mainz, 55099, Germany, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Khuyagbaatar, J., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany, Helmholtz Institute Mainz, Mainz, 55099, Germany Ackermann, D., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany, Grand Accélérateur National d'Ion Lourds - GANIL, CEA/DSM-CNRS/IN2P3, Bd. Henri Becquerel, BP. 55027, Cedex 5, Caen, 14076, France Andersson, L.-L., Helmholtz Institute Mainz, Mainz, 55099, Germany, University of Liverpool, Liverpool, L69 7ZE, United Kingdom Badura, E., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Block, M., Johannes Gutenberg University Mainz, Mainz, 55099, Germany, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany, Helmholtz Institute Mainz, Mainz, 55099, Germany Brand, H., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Conrad, I., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Cox, D.M., University of Liverpool, Liverpool, L69 7ZE, United Kingdom Düllmann, C.E., Johannes Gutenberg University Mainz, Mainz, 55099, Germany, GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany, Helmholtz Institute Mainz, Mainz, 55099, Germany Dvorak, J., Helmholtz Institute Mainz, Mainz, 55099, Germany Eberhardt, K., Johannes Gutenberg University Mainz, Mainz, 55099, Germany, Helmholtz Institute Mainz, Mainz, 55099, Germany Ellison, P.A., Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8169, United States, University of California, Berkeley, CA 94720-1460, United States Esker, N.E., Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8169, United States, University of California, Berkeley, CA 94720-1460, United States Even, J., Johannes Gutenberg University Mainz, Mainz, 55099, Germany, Helmholtz Institute Mainz, Mainz, 55099, Germany, KVI-CART, University of Groningen, Groningen, AA 9747, Netherlands Fahlander, C., Lund University, Lund, 22100, Sweden Forsberg, U., Lund University, Lund, 22100, Sweden Gates, J.M., Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8169, United States Golubev, P., Lund University, Lund, 22100, Sweden Gothe, O., Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8169, United States, University of California, Berkeley, CA 94720-1460, United States Gregorich, K.E., Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8169, United States Hartmann, W., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Herzberg, R.D., University of Liverpool, Liverpool, L69 7ZE, United Kingdom Heßberger, F.P., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany, Helmholtz Institute Mainz, Mainz, 55099, Germany Hoffmann, J., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Hollinger, R., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Hübner, A., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Jäger, E., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Kindler, B., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Klein, S., Johannes Gutenberg University Mainz, Mainz, 55099, Germany Kojouharov, I., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Kratz, J.V., Johannes Gutenberg University Mainz, Mainz, 55099, Germany Krier, J., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Kurz, N., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Lahiri, S., Saha Institute of Nuclear Physics, Kolkata, 700064, India Lommel, B., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Maiti, M., Saha Institute of Nuclear Physics, Kolkata, 700064, India, Department of Physics, Indian Institute of Technology Roorkee, Roorkee, 247667, India Mändl, R., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Merchán, E., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Minami, S., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Mistry, A.K., University of Liverpool, Liverpool, L69 7ZE, United Kingdom Mokry, C., Johannes Gutenberg University Mainz, Mainz, 55099, Germany, Helmholtz Institute Mainz, Mainz, 55099, Germany Nitsche, H., Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8169, United States, University of California, Berkeley, CA 94720-1460, United States Omtvedt, J.P., University of Oslo, Oslo, 0315, Norway Pang, G.K., Lawrence Berkeley National Laboratory, Berkeley, CA 94720-8169, United States Renisch, D., Johannes Gutenberg University Mainz, Mainz, 55099, Germany Rudolph, D., Lund University, Lund, 22100, Sweden Runke, J., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Sarmiento, L.G., Universidad Nacional de Colombia, Bogotá, D.C. 111321, Colombia, Lund University, Lund, 22100, Sweden Schädel, M., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan Schaffner, H., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Schausten, B., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Semchenkov, A., University of Oslo, Oslo, 0315, Norway Steiner, J., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Thörle-Pospiech, P., Johannes Gutenberg University Mainz, Mainz, 55099, Germany, Helmholtz Institute Mainz, Mainz, 55099, Germany Trautmann, N., Johannes Gutenberg University Mainz, Mainz, 55099, Germany Türler, A., University of Bern, Bern, 3012, Switzerland, Paul Scherrer Institute, Villigen, 5232, Switzerland Uusitalo, J., University of Jyväskylä, Jyväskylä, 40014, Finland Ward, D., Lund University, Lund, 22100, Sweden Wegrzecki, M., Institute of Electron Technology, Warsaw, 02-668, Poland Wieczorek, P., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Wiehl, N., Johannes Gutenberg University Mainz, Mainz, 55099, Germany Yakushev, A., GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, 64291, Germany Yakusheva, V., Helmholtz Institute Mainz, Mainz, 55099, Germany |
| Funding Details: | We are grateful to GSI's ion-source and UNILAC staff. Two of us (A. Di Nitto and J. Khuyagbaatar) thank Dr. S. Heinz for fruitful discussions. This work was in part financially supported by BMBF contract-No. 06MZ7164, the Swedish Research Council under contracts VR 2008-4240 and VR 2011-5253. One of us (D. Ackermann) is supported by the European Commission in the framework of CEA-EUROTALENT 2014-2018 (noPCOFUND – GA – 2013 - 600382). We thank the LBNL Nuclear Science Division's R.F. Fairchild II, N.E. Reeves, J.A. Van Wart and the Radiation Protection Group of the Environmental Health and Safety Division for their support with the preparation and execution of the 249Cf shipment to Germany. ST/L005670/1, ST/L005689/1; Science and Technology Facilities Council, STFC: ST/P004598/1; European Commission, EC: GA – 2013 - 600382; Bundesministerium für Bildung und Forschung, BMBF: 06MZ7164; Vetenskapsrådet, VR: VR 2008-4240, VR 2011-5253; Bundesministerium für Bildung und Frauen, BMBF |
| Corresponding Author: | Khuyagbaatar, J.; GSI Helmholtzzentrum für Schwerionenforschung GmbHGermany; email: j.khuyagbaatar@gsi.de |
| Appears in Collections: | Journal Publications [PH] |
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