detectors in the fasa experiments
DESCRIPTION
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)) - PowerPoint PPT PresentationTRANSCRIPT
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Detectors in the FASA experiments
Piotr Morawski
Supervisor:
dr Waldemar Karcz
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Presentation’s outline
1. Detectors setup2. FASA experiment3. Detectors characterisctic
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Detectors setup - location
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• 64 thin scintillators (CsI(Tl))
• 30 telescopes - dE(gas)xE(Si(Al))
Detectors setup - schema
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Detectors setup – pictures - 1
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Detectors setup – pictures - 2
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FASA experiment - introduction
Field of research: Thermal
multifragmentation
Nuclear phase transitions (liquid-gas, liquid-fog)
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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)
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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
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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
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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
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Detectors characterisctic
A = - 31.32±2.52
B = 254.95±1.02
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Detectors characterisctic
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Detectors characterisctic
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The End
I’d like to thanks: Dr Waldemar Kracz Director Dmitri V. Fursaev Dr Wladislaw Chmielowski Dr Roman Zawodny