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Coulomb dissociation of 16O into 4He and 12C

Göbel, Kathrin ; Cederkäll, Joakim LU ; Park, Jason LU and Zanetti, Lorenzo (2020) In Journal of Physics: Conference Series 1668.
Abstract
We measured the Coulomb dissociation of 16O into 4He and 12C at the R3B setup in a first campaign within FAIR Phase 0 at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt. The goal was to improve the accuracy of the experimental data for the 12C(a,?)16O fusion reaction and to reach lower center-ofmass energies than measured so far. The experiment required beam intensities of 109 16O ions per second at an energy of 500 MeV/nucleon. The rare case of Coulomb breakup into 12C and 4He posed another challenge: The magnetic rigidities of the particles are so close because of the same mass-To-charge-number ratio A/Z = 2 for 16O, 12C and 4He. Hence, radical changes of the R3B setup were necessary. All detectors had slits to allow the passage... (More)
We measured the Coulomb dissociation of 16O into 4He and 12C at the R3B setup in a first campaign within FAIR Phase 0 at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt. The goal was to improve the accuracy of the experimental data for the 12C(a,?)16O fusion reaction and to reach lower center-ofmass energies than measured so far. The experiment required beam intensities of 109 16O ions per second at an energy of 500 MeV/nucleon. The rare case of Coulomb breakup into 12C and 4He posed another challenge: The magnetic rigidities of the particles are so close because of the same mass-To-charge-number ratio A/Z = 2 for 16O, 12C and 4He. Hence, radical changes of the R3B setup were necessary. All detectors had slits to allow the passage of the unreacted 16O ions, while 4He and 12C would hit the detectors' active areas depending on the scattering angle and their relative energies. We developed and built detectors based on organic scintillators to track and identify the reaction products with sufficient precision. © Published under licence by IOP Publishing Ltd. (Less)
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author
; ; and
author collaboration
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Dissociation, Fusion reactions, Beam intensity, Charge number, Coulomb breakup, Coulomb dissociations, Magnetic rigidity, Organic scintillator, Relative energies, Scattering angles, Astrophysics
host publication
Nuclear Physics in Astrophysics IX (NPA-IX), 15-20 September 2019, Frankfurt, Germany
series title
Journal of Physics: Conference Series
volume
1668
article number
012016
publisher
IOP Publishing
external identifiers
  • scopus:85096358706
ISSN
1742-6596
DOI
10.1088/1742-6596/1668/1/012016
language
English
LU publication?
yes
id
3855f011-3f2c-4a3e-82e5-6e0b32680a29
date added to LUP
2020-12-01 12:40:57
date last changed
2022-04-26 22:15:46
@inproceedings{3855f011-3f2c-4a3e-82e5-6e0b32680a29,
  abstract     = {{We measured the Coulomb dissociation of 16O into 4He and 12C at the R3B setup in a first campaign within FAIR Phase 0 at GSI Helmholtzzentrum für Schwerionenforschung, Darmstadt. The goal was to improve the accuracy of the experimental data for the 12C(a,?)16O fusion reaction and to reach lower center-ofmass energies than measured so far. The experiment required beam intensities of 109 16O ions per second at an energy of 500 MeV/nucleon. The rare case of Coulomb breakup into 12C and 4He posed another challenge: The magnetic rigidities of the particles are so close because of the same mass-To-charge-number ratio A/Z = 2 for 16O, 12C and 4He. Hence, radical changes of the R3B setup were necessary. All detectors had slits to allow the passage of the unreacted 16O ions, while 4He and 12C would hit the detectors' active areas depending on the scattering angle and their relative energies. We developed and built detectors based on organic scintillators to track and identify the reaction products with sufficient precision. © Published under licence by IOP Publishing Ltd.}},
  author       = {{Göbel, Kathrin and Cederkäll, Joakim and Park, Jason and Zanetti, Lorenzo}},
  booktitle    = {{Nuclear Physics in Astrophysics IX (NPA-IX), 15-20 September 2019, Frankfurt, Germany}},
  issn         = {{1742-6596}},
  keywords     = {{Dissociation; Fusion reactions; Beam intensity; Charge number; Coulomb breakup; Coulomb dissociations; Magnetic rigidity; Organic scintillator; Relative energies; Scattering angles; Astrophysics}},
  language     = {{eng}},
  publisher    = {{IOP Publishing}},
  series       = {{Journal of Physics: Conference Series}},
  title        = {{Coulomb dissociation of 16O into 4He and 12C}},
  url          = {{http://dx.doi.org/10.1088/1742-6596/1668/1/012016}},
  doi          = {{10.1088/1742-6596/1668/1/012016}},
  volume       = {{1668}},
  year         = {{2020}},
}