sNN = 200GeV with the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) is given. Direct-photon yields for pT & 4GeV/c and photon-hadron azimuthal correlations were determined with the aid of an electromagnetic calorimeter. By detecting ee pairs from the internal conversion of virtual photons direct-photon yields were measured between 1 . pT . 4GeV/c. In Au+Au collisions thermal p...

The mechanism of photon acceleration driven by the near-forward scattering (NFS) in interaction between an intense laser and under-dense plasmas is studied particle-in-cell (PIC) simulation. This utilizes tunneling ionization effect to stimulate electron plasma waves when pulse propagates plasmas. density inhomogeneous both longitudinal transverse direction. In direction, a steep ionized front ...

Cold atmospheric plasma (CAP) has received great attention due to its noteworthy ability, and has also been widely studied over few decades in physics, biology and medicine. The purpose of this study is to evaluate the cold atmospheric pressure plasma effects on the proliferation of breast cancer cells. MDA-MB-231 was used for this experiment. MDA-MB-231 cells were cultured in 24-well plate and...

We calculate the production rate of soft real photons from a hot quark-gluon plasma using Braaten-Pisarski's perturbative resummation method. To leading order in the QCD coupling constant 9 we find a logarithmically divergent result for photon energies of order 9T, where T is the plasma temperature. This divergent behaviour is due to unscreened mass singularities in the effective hard thermal l...

in this paper, using a one-dimensional simulation model, the reforming process of sour gas, i.e. ch4, co2, and h2s, to the various charged particles and syngas in a dielectric barrier discharge (dbd) reactor is studied. an electric field is applied across the reactor radius, and thus a non-thermal plasma discharge is formed within the reactor. based on the space-time coupled finite element meth...

The first structures were proto-voids formed in the primordial plasma. Viscous and weak turbulence forces balanced gravitational forces when the scale of causal connection LH ≡ ct ≈ LSV ≡ (γν/ρG) 1/2 ≈ LST ≡ ε /(ρG) at time t ≈ 30,000 years (10 s), with c the speed of light, γ ≈ 1/t the rate of strain, and ν the kinematic viscosity, where LSV and LST are viscous and turbulent Schwarz scales of ...

2007 This thesis entitled: High power ultrafast laser design and high-order harmonic generation in capillary discharge plasmas written by David M. Gaudiosi has been approved for the Department of Physics Date The final copy of this thesis has been examined by the signatories, and we find that both the content and the form meet acceptable presentation standards of scholarly work in the above men...

Hollow fiber membranes (HFMs) used in artificial lungs (oxygenators) undergo plasma leakage (or wetting) in which blood plasma slowly fills the pores of the fiber wall, plasma leaks into gas pathways, and overall gas exchange decreases. To overcome this problem plasma resistant fibers are being developed that are skinned asymmetric or composite symmetric versions of microporous oxygenator fiber...

ABSTRACT Star formation accretion on to the super massive black holes (SMBHs) and feedback processes link evolution of galaxies with their SMBHs. X-ray observations in imaging spectral regime have revealed be an important tool study connection between nuclear activity circumnuclear star nearby active galactic nuclei (AGN). diagnostics can lead disentangle, which is ionization mechanism central ...