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Using γ rays to disentangle fusion-fission and quasifission near the Coulomb barrier: A test of principle in the fusion-fission and quasielastic channels
- Source :
- Physical Review C, Physical Review C, American Physical Society, 2020, 101 (6), pp.064612. ⟨10.1103/PhysRevC.101.064612⟩, Physical Review C, American Physical Society, 2020, 101 (6), ⟨10.1103/PhysRevC.101.064612⟩
- Publication Year :
- 2020
- Publisher :
- American Physical Society (APS), 2020.
-
Abstract
- International audience; The overlap in the mass symmetric region of the reaction products from fusion-fission and quasifission complicates the assignment of symmetric events to complete fusion on the basis of the mass distribution alone. Additional observables, besides mass distribution, should be used. The approach proposed here relies on the fact that fusion-fission and quasifission are characterized by different timescales. Within this framework, we performed a detailed study to find out how timescales can be probed via angular momentum transfer as measured via γ-ray multiplicities. The proof of principle was carried out by measuring the γ rays in coincidence with fusion-fission and quasielastic binary fragments in the reaction S32 + Au197 at beam energy near the Coulomb barrier. The experiment was performed at the Accélérateur Linéaire Tandem à Orsay (ALTO) facility at the Institut De Physique Nucléaire (IPN) in Orsay (France) using a detection setup consisting of ORGAM (ORsay GAMma) and PARIS (Photon Array Radioactive Ion Stable beams) γ-detectors arrays coupled with the CORSET (CORrelation SETup) time-of-flight spectrometer. Results of the sensitivity of this method to distinguish reaction channels with different dynamics are discussed.
- Subjects :
- [PHYS]Physics [physics]
Physics
Nuclear reaction
Angular momentum
Photon
[PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th]
Spectrometer
Mass distribution
010308 nuclear & particles physics
Coulomb barrier
Observable
[PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex]
01 natural sciences
7. Clean energy
Ion
Nuclear physics
0103 physical sciences
Nuclear Reactions
Nuclear Experiment
010306 general physics
ComputingMilieux_MISCELLANEOUS
Subjects
Details
- ISSN :
- 24699993, 24699985, 05562813, and 1089490X
- Volume :
- 101
- Database :
- OpenAIRE
- Journal :
- Physical Review C
- Accession number :
- edsair.doi.dedup.....44ff13eef49f87bb8b9adb276fd6b531