Physics Letters B (Aug 2019)
Measurement of proton-evaporation rates in fusion reactions leading to transfermium nuclei
- A. Lopez-Martens,
- A.V. Yeremin,
- M.S. Tezekbayeva,
- Z. Asfari,
- P. Brionnet,
- O. Dorvaux,
- B. Gall,
- K. Hauschild,
- D. Ackermann,
- L. Caceres,
- M.L. Chelnokov,
- V.I. Chepigin,
- M.V. Gustova,
- A.V. Isaev,
- A.V. Karpov,
- A.A. Kuznetsova,
- J. Piot,
- O.N. Malyshev,
- A.G. Popeko,
- Yu.A. Popov,
- K. Rezynkina,
- H. Savajols,
- A.I. Svirikhin,
- E.A. Sokol,
- P. Steinegger
Affiliations
- A. Lopez-Martens
- CSNSM, IN2P3-CNRS, Université Paris Sud et Université Paris Saclay, Orsay, France; Corresponding author.
- A.V. Yeremin
- FLNR, JINR, Dubna, Russia
- M.S. Tezekbayeva
- FLNR, JINR, Dubna, Russia; Institute of Nuclear Physics, Ministry of Energy of the Republic of Kazakhstan, Almaty, Republic of Kazakhstan
- Z. Asfari
- IPHC, IN2P3-CNRS, Université de Strasbourg, Strasbourg, France
- P. Brionnet
- IPHC, IN2P3-CNRS, Université de Strasbourg, Strasbourg, France
- O. Dorvaux
- IPHC, IN2P3-CNRS, Université de Strasbourg, Strasbourg, France
- B. Gall
- IPHC, IN2P3-CNRS, Université de Strasbourg, Strasbourg, France
- K. Hauschild
- CSNSM, IN2P3-CNRS, Université Paris Sud et Université Paris Saclay, Orsay, France
- D. Ackermann
- GANIL, Caen, France
- L. Caceres
- GANIL, Caen, France
- M.L. Chelnokov
- FLNR, JINR, Dubna, Russia
- V.I. Chepigin
- FLNR, JINR, Dubna, Russia
- M.V. Gustova
- FLNR, JINR, Dubna, Russia
- A.V. Isaev
- FLNR, JINR, Dubna, Russia
- A.V. Karpov
- FLNR, JINR, Dubna, Russia
- A.A. Kuznetsova
- FLNR, JINR, Dubna, Russia
- J. Piot
- GANIL, Caen, France
- O.N. Malyshev
- FLNR, JINR, Dubna, Russia
- A.G. Popeko
- FLNR, JINR, Dubna, Russia
- Yu.A. Popov
- FLNR, JINR, Dubna, Russia
- K. Rezynkina
- CSNSM, IN2P3-CNRS, Université Paris Sud et Université Paris Saclay, Orsay, France
- H. Savajols
- GANIL, Caen, France
- A.I. Svirikhin
- FLNR, JINR, Dubna, Russia
- E.A. Sokol
- FLNR, JINR, Dubna, Russia
- P. Steinegger
- FLNR, JINR, Dubna, Russia
- Journal volume & issue
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Vol. 795
pp. 271 – 276
Abstract
The analysis of fission events following the implantation of evaporation residues produced in the fusion reaction of 50Ti and 209Bi at different bombarding energies has revealed 5 millisecond decays, which are attributed to the spontaneous fission of proton-evaporation channels. The average cross sections for proton evaporation are found to be ∼100 and 10 times smaller than the largest neutron-evaporation channel cross section at the same excitation energy. These results suggest that the proton evaporation channel, albeit weak, may represent a realistic alternative to synthesize new, more neutron rich super heavy nuclei. Keywords: Fusion-evaporation reaction, Proton evaporation, Super heavy nuclei, Cross section
