1 / 15

Estimation of neutron production on nuclear target is needed for :

Neutron Production in P bar - A Interactions within UrQMD model Kh.Abdel-Waged, A.Galoyan, V.Uzhinsky JINR, Dubna. Estimation of neutron production on nuclear target is needed for :. Detectors design Target construction Radiation conditions and so on. LHC experiments

pete
Download Presentation

Estimation of neutron production on nuclear target is needed for :

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. Neutron Production in Pbar-A Interactions within UrQMD model Kh.Abdel-Waged,A.Galoyan, V.Uzhinsky JINR, Dubna Estimation of neutron production on nuclear target is needed for : • Detectors design • Target construction • Radiation conditions • and so on LHC experiments CBM, Panda and others Accelerator driven systems (ADS) Intra-nuclear cascade models: Dubna cascade model, LAHET, FLUKA, MCMPX … UrQMD model does not consider evaporation and fission

  2. ANALYSIS OF THE (N, X N-PRIME) REACTIONS BY QUANTUM MOLECULAR DYNAMICS PLUS STATISTICAL DECAY MODEL.K. Niita, S. Chiba, Toshiki Maruyama, Tomoyuki Maruyama, H. Takada, T. Fukahori, Y. Nakahara, A. Iwamoto (JAERI, Tokai),. • Phys.Rev.C52:2620-2635,1995 Neutron energy spectra for the reaction p(1500 MeV)+Pb. The solid histograms are the results of QMD+SDM, and points are experimental data.

  3. INTERPRETATION OF THE NEUTRON DOUBLE DIFFERENTIAL CROSS-SECTIONS IN THE INTERACTIONS OF P + AL, FE, AND ZR AT 1.2-GEV USING THE ULTRARELATIVISTIC QUANTUM MOLECULAR DYNAMICS MODEL.Khaled Abdel-Waged (Umm Al-Qura U.), Phys.Rev.C67:064610,2003 Neutron energy spectra for the reaction p(1200 MeV)+Al, Fe, Zr. Histog-rams are the results of UrQMD+SDM, and points are experimental data.

  4. Neutron multiplicity distributions(previous UrQMD calculations)

  5. Neutron energy spectra (previous UrQMD calculations)

  6. Neutron energy spectra (previous UrQMD calculations)

  7. Neutron energy spectra (previous UrQMD calculations)

  8. Recent calculations

  9. Recent calculations

  10. Recent calculations

  11. Recent calculations of neutron multiplicity distributions

  12. Instead of Conclusion • Evaporation and fission models are implemented into the UrQMD model. • Neutron multiplicity distributions for Pbar+A interactions are considered. • Neutron energy spectra are calculated. • Reasonable agreement with the corresponding experimental data is reached. • Problems: • Calculations using UrQMD+Evaporation+Fission model require too many computer time. • The model underestimates yield of neutrons with energy less than 5 MeV , and overestimates (a little bit) average neutron multiplicity. • We do not know, what do we have to do with strange nucleus?

  13. Evaporation/Fussion

  14. Evaporation+Fussion/Statistical Multi-fragmentation

More Related