1 / 16

titre

Dynamical effects in mutifragmentation at intermediate energies. titre. for the INDRA collaboration. Jean Colin, Daniel Cussol. E. Plagnol PRC 61, 014606 (2000) ; B. Davin PRC 65, 064614 (2002); L. Gingras PRC 65, 054613 (2002);... . influence-Ebeam. BINARY BREAKUPS. Xe+Sn.

ula
Download Presentation

titre

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Dynamical effects in mutifragmentation at intermediate energies titre for the INDRA collaboration Jean Colin, Daniel Cussol

  2. E. Plagnol PRC 61, 014606 (2000) ; B. Davin PRC 65, 064614 (2002); L. Gingras PRC 65, 054613 (2002);...

  3. influence-Ebeam BINARY BREAKUPS Xe+Sn INDRA Xe+Sn =0.2-0.4 Mo+Mo 12.5 MeV/u 25 MeV/u 32 MeV/u 39 MeV/u 45 MeV/u b 18.7 MeV/u 0.8-1 plane 0.7-0.8 P.Glassel Z.Phys.A310 189-216(1983) 0.6-0.7 A.A Stefanini Z.Phys.A351 167-186(1995) 0.5-0.6 plane F.Bocage NPA 676 (2000) 391-408

  4. Ta+Au system at 39.6A MeV the heaviest fragment the second heaviest fragment the third heaviest fragment the fourth heaviest fragment beam axis Z vZ qF/QP vQP vc.m. qQP

  5. Ni + Ni 52A MeV U+U 24A MeV Xe +Sn 50A MeV Ta+Au 33A MeV

  6. beam axis Z qF/QP vQP vZ BINARY BREAKUPS U+U system 24A MeV U+C system Z Vc.m VZ the « hierarchy effect » is observed for very different system (except for light targets) cosqF/QP J. Colin PRC 67 064603 (2003)

  7. beam axis vZ Z1 qprox vrel Z2+… qQP Internal correlations Ta+Au system 39.6A MeV

  8. beam axis vZ Z1 qprox vrel qQP Z2+… U+C system at 24A MeV

  9. MIMF = 2 beam axis Z1 qF/QP vQP Vc.m VZ2 VZ1 × Z2

  10. Z 80 - 60 - J.F. Lecolley PLB 354 (1995) 202-207 40 - 20 - 0 - 0 1000 2000 3000 ZTLF residue in coïncidence with(Z1+Z2) fissionningPLF ZPLF residue in coïncidence with(Z1+Z2) fissionning TLF Binary breakup for the Pb+Au system at 29A MeV Nautilus TKE(MeV) T1 , T2 , T3 N1/Z1, N2/Z2, N3/Z3 J. Colin NPA 593 (1995) 48-68 ZTLFin coïncidence with(Z1+Z2) fissionningTLF

  11. Comparison to a Classical NBody Dynamics Model D. Cussol PRC 65 054614 (2002) 50+50; Ecm/N 120 esu

  12. Comparison to a Classical NBody Dynamics Model

  13. Summary The decay mode of a given nucleus depends on the entrance channel The heaviest fragment is more often than not the fastest and is aligned on the PLF recoil velocity: « hierarchy effect » It is relevant to study the internal correlation (Vr-prox) Strong constraints for models The energy repartition depends on the entrance channel To reproduce the aligned component: models with entrance channel are needed The aligned component and the correlations are compatible with a neck emission Thanks: my friends from LPC and Indra collaboration

  14. Ta+Au system at 39.6A MeV

  15. Ta+Au system at 39.6A MeV

  16. Pb + Au 29A MeV v* 0. -1. -1. 0. -1. -1. cos y* y*

More Related