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Physics & Astronomy Section ============================: FRI.MAR,990319 :============================ 18| NY Acad Sci NYAS:Quark-GluonPlasma9903 . MichaelTannenbaum RelativisticHeavyIonCollidor |18:9| NYAS : 40k members , 1%3 NYC area . MichaelTannenbaum : Brookhaven - PhD Columbia - size of muon . CERN Harvard Rockefeller . Proposed new state of matter : Quantup Chromodynamics : Strong interactions - 10fm cube ( P x D 10^3 - 4%3 RA % r ) + K x r | strong % r | string like K x r | [ /\ Wish I had gotten this formula and comments precisely . core . /\ ] Coulumb like potential Feynman : colide - like understanding Swiss watches by smashing them into each other . grape pulp - gluons , quarks - seeds , nucleus grape bunch . smash into momentary 1 big grape - Q-G Plasma . Theory of Big Bang - | Now 10*17 seconds later | Gold has nice big nucleus . isotopically pure 197 vs Lead 207 . RelativisticHeavyIon collision in C.M System - Lorenz contracted . @ Gamma : 100 | ( relativistic length ratio ) Peripheral collision Impact Parameter b . > 2 R , no colision Baryons - neutrons , protons | 4 theories of elastisity Longitudinal & Transverse Momentum preserved . Rapidity - speed metric linear under Lorenz trans . mT ( ( +/ m p * 2 ) * .5 Entropy : S : number of particles created . multiplicity . Phase transition . revealed by characteristic temp vs entropy curve . Photon / Lepton pair thermal emission . strange particles enhanced . Debye Screening - charmed particles escape . Electric forces @ > 2 x R miss . Relativistic nuclei transparent to each other because small excitations take place over long distances . (?) each collision creates thousands of particles . Building RelativisticHeavyIonCollidor - 2 km ring . 20 yr ago Brookhaven LI . 2.4 mi path . Tandem VanDeGraf`s to start - 6 matched circular arcs w 6 staight sections 50 - 500 GeV | super conducting Magnets . Propoesd `84 . Broke ground `91 . `98 finished last magnet . `99 physics starts . `00 plan conference w Stony Brook Collision energy - 2 mosquitoes . 1600 mi superconducting cable . Phoenix experiment 15M tall . Star Experiment . www.rhic.bnl.gov |19:10| ?s : Fusion ? need chromo- , not electro- magnetic field . Duration ? C x 10fM | SpaceTime cube . not Gaussian or Poisson , neg binomial dists . rel quantum xr
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