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Experimental Nuclear Physics at UC Davis

Experimental Nuclear Physics at UC Davis. Come visit us on the fifth floor - WEST end. FACULTY: Jim Draper (emeritus) Paul Brady (emeritus) Daniel Cebra Ramona Vogt STAFF: Juan Romero Tom Gutierrez. GRAD STUDENTS: Roppon Picha ( 2005 ) UNDERGRADS: Nathan Farr David Cherney

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Experimental Nuclear Physics at UC Davis

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  1. Experimental Nuclear Physics at UC Davis Come visit us on thefifth floor - WEST end • FACULTY: • Jim Draper (emeritus) • Paul Brady (emeritus) • Daniel Cebra • Ramona Vogt • STAFF: • Juan Romero • Tom Gutierrez • GRAD STUDENTS: • Roppon Picha (2005) • UNDERGRADS: • Nathan Farr • David Cherney • Stephen Baumgarten PS… Check out our web page at http://nuclear.ucdavis.edu Daniel Cebra - Physics 295

  2. Recent Graduates • Ian Johnson (2002) Postdoc LBNL • Jenn Klay (2001) Postdoc LBNL • Mike Heffner (2000) Postdoc LLNL • Tom Gutierrez (2000) Postdoc UCD • Bill Caskey (1999) Z-World, Davis CA • Lynn Wood (1998) Z-World, Davis CA • Doug Mayo (1997) Staff Scientist LANL • Jason Dunn (1997) Professor - Idaho Christian • Isaac Huang (1997) FunMail.com • Jack Osbourn (1995) Professor - Sac State • Jessica Kintner (1995) Professor - St. Mary’s Daniel Cebra - Physics 295

  3. What Do We Do? Condensed Matter High Energy Relativistic Heavy Ion Physics Cosmology Daniel Cebra - Physics 295

  4. Basics Hadrons = Made of quarks Baryon = 3 q meson = q q p = uud n = udd p+ = ud K+ = us Daniel Cebra - Physics 295

  5. Relativistic Heavy Ion Physics:Creating Mini-`Big Bangs’ in the Laboratory 1) Goal: Use relativistic collisions of nuclear to create hot dense matter which reproduces the earliest stages of the universe 2) Now, how do we do this? (In Theory) PS… Check out our web page at http://nuclear. ucdavis.edu Daniel Cebra - Physics 295

  6. 3) How do we really do this? Daniel Cebra - Physics 295

  7. Nuclear Matter Phase Diagram Big Bang GQP Temperature Hadronic Gas Heavy Ion Collisions Neutron Stars Baryon Density Daniel Cebra - Physics 295

  8. How to Take the Temperature • Determine the momentum of each ‘track’ • Identify the particle type of each track • Assume that the particles are emitted from an equilibrated gas • Temperatures are measured in the range expected for a QGP transition Daniel Cebra - Physics 295

  9. Hottest The Hottest matter in the Universe Relativistic Heavy Ion Collider Brookhaven National Laboratory Upton, New York Scientists have recently set records for both the highest and lowest measured temperatures. The high temperatures approach those of the early stage of the Big Bang. • Relativistic Heavy Ion Collisions1.3x1012 K (2002) • Thermonuclear Fusion Device 3x106 K • The surface of the Sun 5800 K • The hottest place in the Solar system (Io) 2000 K • The highest recorded temperature on earth (Libya) 330 K • Room Temperature 300 K • Coldest place on Earth 184 K (Vostock Station - Antarctica) • Air turns to liquid 73 K • Coldest place in the solar system (Triton) 38K • Helium turns to liquid 4.2 K • Dilution Refrigeration .002 K • Magnetic Cooling 90 mK • Ion Trapping10 nK (1999) Daniel Cebra - Physics 295

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