27 research outputs found
Rapidity Distributions of Dileptons from a Hadronizing Quark-Gluon Plasma
It has been predicted that dilepton production may be used as a quark-gluon
plasma probe. We calculate the rapidity distributions of thermal dileptons
produced by an evolving quark-gluon plasma assuming a longitudinal scaling
expansion with initial conditions locally determined from the hadronic rapidity
density. These distributions are compared with Drell-Yan production and
semileptonic charm decays at invariant mass , 4, and 6 GeV.Comment: 17 pages (standard LaTeX), 6 figures (available as topdraw files or
printed versions upon request), GSI-93-6
Diagnostics of the plasma parameters based on the K X-ray line positions for various 4d and 4f metals
This paper shows the theoretical predictions of the outer-shell ionization effect on the positions of
Kα1,2, Kβ1,3, and Kβ2 X-ray lines for some 4d-transition metals (molybdenum and palladium) and 4f rare-earth
elements (dysprosium and ytterbium). The ionization energy shifts have been evaluated using the multiconfiguration
Dirac-Fock method, containing Breit interaction and quantum electrodynamic (QED) corrections. The
presented results are important for obtaining the information about some parameters of plasma generated by
different sources, especially by pulsed power machine and short-pulse lasers