Projects per year
Abstract
Background: Models describing nuclear fragmentation and fragmentation fission deliver important input for planning nuclear physics experiments and future radioactive ion beam facilities. These models are usually benchmarked against data from stable beam experiments. In the future, two-step fragmentation reactions with exotic nuclei as stepping stones are a promising tool for reaching the most neutron-rich nuclei, creating a need for models to describe also these reactions. Purpose: We want to extend the presently available data on fragmentation reactions towards the light exotic region on the nuclear chart. Furthermore, we want to improve the understanding of projectile fragmentation especially for unstable isotopes. Method: We have measured projectile fragments from C10,12-18 and B10-15 isotopes colliding with a carbon target. These measurements were all performed within one experiment, which gives rise to a very consistent data set. We compare our data to model calculations. Results: One-proton removal cross sections with different final neutron numbers (1pxn) for relativistic C10,12-18 and B10-15 isotopes impinging on a carbon target. Comparing model calculations to the data, we find that the epax code is not able to describe the data satisfactorily. Using abrabla07 on the other hand, we find that the average excitation energy per abraded nucleon needs to be decreased from 27 MeV to 8.1 MeV. With that decrease abrabla07 describes the data surprisingly well. Conclusions: Extending the available data towards light unstable nuclei with a consistent set of new data has allowed a systematic investigation of the role of the excitation energy induced in projectile fragmentation. Most striking is the apparent mass dependence of the average excitation energy per abraded nucleon. Nevertheless, this parameter, which has been related to final-state interactions, requires further study.
Original language | English |
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Article number | 054601 |
Journal | Physical Review C |
Volume | 93 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2 May 2016 |
ASJC Scopus subject areas
- Nuclear and High Energy Physics
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Dive into the research topics of 'Systematic investigation of projectile fragmentation using beams of unstable B and C isotopes'. Together they form a unique fingerprint.Projects
- 5 Finished
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Birmingham Nuclear Physics Group Consolidated Grant
Jones, P., Evans, P., Freer, M. & Wheldon, C.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/14 → 30/09/18
Project: Research Councils
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Birmingham Nuclear Physics Consolidated Grant
Freer, M., Evans, P., Jones, P., Wheldon, C. & Lazzeroni, C.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/11 → 31/07/14
Project: Research Councils
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Nuclear Structure, Astrophysics and Reactions (NuSTAR) at FAIR
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/07/09 → 31/03/15
Project: Research Councils
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Birmingham Nuclear Physics Group Rolling Grant
Tungate, G., Lazzeroni, C., Evans, P., Jones, P. & Freer, M.
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
1/08/08 → 31/07/13
Project: Research Councils
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Advanced Fellowship - Dr Carl Wheldon
SCIENCE & TECHNOLOGY FACILITIES COUNCIL
29/10/07 → 28/10/12
Project: Research