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 - schema 64 thin scintillators (CsI(Tl)) 30 telescopes - dE(gas)xE(Si(Al))

Detectors setup – pictures - 1

Detectors setup – pictures - 2

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

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)

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

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

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

Detectors characterisctic B = 254.95±1.02

Detectors characterisctic

Detectors characterisctic

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