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Detectors in the FASA experiments

Detectors in the FASA experiments. Piotr Morawski. Supervisor: dr Waldemar Karcz. Presentation’s outline. Detectors setup FASA experiment Detectors characterisctic. Detectors setup - location. Detectors setup - schem a. 64 thin scintillators (CsI(Tl))

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Detectors in the FASA experiments

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  1. Detectors in the FASA experiments Piotr Morawski Supervisor: dr Waldemar Karcz

  2. Presentation’s outline • Detectors setup • FASA experiment • Detectors characterisctic

  3. Detectors setup - location

  4. Detectors setup - schema • 64 thin scintillators (CsI(Tl)) • 30 telescopes - dE(gas)xE(Si(Al))

  5. Detectors setup – pictures - 1

  6. Detectors setup – pictures - 2

  7. FASA experiment - introduction Field of research: • Thermal multifragmentation • Nuclear phase transitions (liquid-gas, liquid-fog)

  8. FASA experiment - Thermal multifragmentation • Thermal multifragmentation is an exotic multibody decay, which is the main decay channel for a hot nuclear systems • Due to multifragmentation the hot nuclei (E* ~ 500 – 700MeV) emits many intermediate mass fragments (IMF)

  9. FASA experiment - Thermal multifragmentation • This plot gives us the information on the particle charge and energy • Measuring charge characteristic give us the value of ρt • Measuring energy characteristic give us the value of ρf

  10. FASA experiment - Nuclear fase transitions - 1 • We use term phase transition in nuclear physics because similarity between Van der Waals force and nuclear force (liquid drop model) • Liquid – normal state of nuclear matter in nuclei • Fog – mixed state of liquid droplets (IMF) and nuclear gas

  11. FASA experiment - Nuclear phase transitions - 2 • Liquid – gas transition takes place at temperature Tc = 20±3 MeV • Liquid – fog transition takes place at temperature Tb = 5-7 MeV

  12. Detectors characterisctic A = - 31.32±2.52 B = 254.95±1.02

  13. Detectors characterisctic

  14. Detectors characterisctic

  15. The End I’d like to thanks: • Dr Waldemar Kracz • Director Dmitri V. Fursaev • Dr Wladislaw Chmielowski • Dr Roman Zawodny

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