Collisions and transport phenomena
... per second, is proportional to the number of neutral particles in a column with a cross section of an atom or molecule, nnσn, where nn is the density and σn= πd02 (≈ 10-20 m2) the atomic cross section, and to the average speed, < υ > (≈ 1 km/s), of the charged particle. ...
... per second, is proportional to the number of neutral particles in a column with a cross section of an atom or molecule, nnσn, where nn is the density and σn= πd02 (≈ 10-20 m2) the atomic cross section, and to the average speed, < υ > (≈ 1 km/s), of the charged particle. ...
PHYS 390 Lecture 36 - The first microsecond 36 - 1 Lecture 36
... a universe of normal matter, and one of antimatter, where gamma rays of specific energies would be expected from matter-anti-matter annihilation. Of course, it is always possible that our visible region of the universe is matter, and another region more than 10 billion light years away is antimatter ...
... a universe of normal matter, and one of antimatter, where gamma rays of specific energies would be expected from matter-anti-matter annihilation. Of course, it is always possible that our visible region of the universe is matter, and another region more than 10 billion light years away is antimatter ...
Notes on Elementary Particle Physics
... αst : αem : αwk : αgr :: 1-10 : 10−2 : 10−7 : 10−40 5 Remember ...
... αst : αem : αwk : αgr :: 1-10 : 10−2 : 10−7 : 10−40 5 Remember ...
Structure of Matter
... lower than proton energy levels. A lower overall energy state can therefore be reached by turning some protons into extra neutrons. At some point even the additional neutrons cannot protect the nucleus from the electrostatic repulsion between the protons - what happens then ? energy ...
... lower than proton energy levels. A lower overall energy state can therefore be reached by turning some protons into extra neutrons. At some point even the additional neutrons cannot protect the nucleus from the electrostatic repulsion between the protons - what happens then ? energy ...
Nemcova abstract- ICPIG.rtf - Queen`s University Belfast
... The optical emission spectra of the plasma is dominated by Na, K or Ba emission as illustrated in Figure 2. There is evidence of the dissociation of water molecules reflected in the presence of H, O and OH emission. The OH radical is known to be a H2O2 precursor. Early results of the H2O2 production ...
... The optical emission spectra of the plasma is dominated by Na, K or Ba emission as illustrated in Figure 2. There is evidence of the dissociation of water molecules reflected in the presence of H, O and OH emission. The OH radical is known to be a H2O2 precursor. Early results of the H2O2 production ...
Document
... o(enriched sample)-jet correlation near-side is suppressed compared to 0-jet near-side. o0-jet correlation near-side increases with Et of the trigger particle o(enriched sample)-jet correlation near-side shows no dependence on trigger particle Et. o(enriched sample)-jet away-side is suppressed ...
... o(enriched sample)-jet correlation near-side is suppressed compared to 0-jet near-side. o0-jet correlation near-side increases with Et of the trigger particle o(enriched sample)-jet correlation near-side shows no dependence on trigger particle Et. o(enriched sample)-jet away-side is suppressed ...
Strangeness production
Strangeness production is a signature and a diagnostic tool of quark–gluon plasma (or QGP) formation and properties. Unlike up and down quarks, from which everyday matter is made, strange quarks are formed in pair-production processes in collisions between constituents of the plasma. The dominant mechanism of production involves gluons only present when matter has become a quark–gluon plasma. When quark–gluon plasma disassembles into hadrons in a breakup process, the high availability of strange antiquarks helps to produce antimatter containing multiple strange quarks, which is otherwise rarely made. Similar considerations are at present made for the heavier charm flavor, which is made at the beginning of the collision process in the first interactions and is only abundant in the high-energy environments of CERN's Large Hadron Collider.