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Exploring Nuclear Dynamics with FAZIA: Simulation Study and Physics Cases

Dive into the first simulations of FAZIA in 2007 and technical aspects for FAZIA physics, including EOS observables, exotic states, evaporation, and more. Explore charged particle correlations, neutron detectors, and nuclear structure in non-Weißkopf decays using various detectors and simulations.

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Exploring Nuclear Dynamics with FAZIA: Simulation Study and Physics Cases

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  1. First simulations of FAZIA Napoli 3-5 September 2007

  2. Technical requirements for the physics of FAZIA • Dynamics and EOS observables @ EURISOL •  AIMF , b •  4p, pulse shape ( high granularity) • Exotic states @ SPIRAL/SPIRAL2 •  high-resolution charged particle correlations •  high granularity, |k| resolution • Evaporation, level densities @ SPIRAL/SPIRAL2 •  A1 , E* •  4p, pulse shape ( high granularity), low thresholds, coupling with spectrometers, neutron detectors • …….And the other physics cases of the proposal, for further study…… •  Very adaptable geometry (beams, detectors)

  3. Simulation • Geometry : • INDRA • INDRA4 • (~ Chimera) • INDRA16 • (FAZIA?) • Configuration • for test: • 2 arrays in • 2 chambers : Neutron detector ? Target Beam • Spherical array + • Surrounded by • neutron detectors? • Annular array • High granularity (strips?) • Replaceable with a spectrometer

  4. Simulation  [deg] INDRA [deg] • Options for the detector : • Aup to element  Zn, • otherwise EPAX • |k| with uncertainty 5% • Double hits  A, K adds • 4p neutron detectors: • efficiency (~20%), • |kn| with uncertainty15% • Geometric coverage ~ 87%

  5. Simulation • 36Ar+58Ni 12 A MeV  Select c.n. 94Pd at 241 MeV, 1.8 cm/ns (lab) • 129Xe+Sn 50 A MeV  Select q.p. 120Sn at 400 MeV, 9 cm/ns (lab) INDRA

  6. Simulation • Reactions : • GEMINI • 12C+24Mg 100 A MeV  Select 12C at 30 MeV, 5.3 cm/ns (lab) • 36Ar+58Ni 12 A MeV  Select c.n. 94Pd at 241 MeV, 1.8 cm/ns (lab) • 129Xe+Sn 50 A MeV  Select q.p. 120Sn at 400 MeV, 9 cm/ns (lab) • !!! : Too good agreement with EPAX • HIPSE • 58Ni+58Ni / 68Ni+68Ni40 A MeV  q.p. + q.t. • 112Sn+112Sn / 132Sn+132Sn40 A MeV  q.p. + q.t. • QMD • 58Ni+58Ni / 68Ni+68Ni150 A MeV  q.p. + q.t. • 112Sn+112Sn / 132Sn+132Sn150 A MeV  q.p. + q.t.

  7. Charged-particle correlations @ SPIRAL/SPIRAL2 • 12C+24Mg 100 A MeV  • Select 12C at 30 MeV, 5.3 cm/ns (lab) • Nuclear structure in exotic (non-Weißkopf) decays: • Probing excited heavy cluster states • 12C decays in Li+Li • |k| perfectly measured: • INDRA: not adapted • INDRA4: main peak • INDRA16: 2 peaks

  8. |k| with uncertainty 0%, 2%, 5% Forward angles |k| is measured with an uncertainty INDRAINDRA4 INDRA16

  9. |k| with uncertainty 0%, 2%, 5% Backward angles |k| is measured with an uncertainty INDRAINDRA4 INDRA16

  10. Dynamics and EOS observables @ EURISOL • Etrans12 measured precisely with • any granularity  INDRA • Correspondence with b (from the model) • N/Z of IMF as a function of Etrans12 • A up to Z=3: not adapted • A up to Z=28 • (all IMF identified): resolved • Small Etrans12 may suffer from • the hole of the beam

  11. Dynamics and EOS observables @ EURISOL

  12. Average neutron spectra (preliminary) • Neutron multiplicity by • A-Z in complete events • Mean neutron spectrum • measured with a surrounding • array, to be defined

  13. Average neutron spectra (preliminary)

  14. Conclusions • FAZIA simulator • Geometric options: OK • More detailed detector properties: Next • Physics cases  model simulations  filtering  solutions for FAZIA

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