Covariant description of kinetic freeze-out through a finite time-like layer

Molnár, E.; Csernai, L. P.; Magas, V. K.; Lázár, Zsolt I.; Nyíri, Á.; Tamosiunas, K.

doi:10.1088/0954-3899/34/9/004

Cited by 15 publications

(34 citation statements)

References 27 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is interesting that similar type of gradual development from space-like into time-like regime occurs in the hadronization phase of ultra-relativistic heavy ion collisions [15][16][17][18][19][20][21][22] . If we include radiative heat transfer in our model, the transition from space-like to time-like behavior will be gradual.…”

Section: Analytic Modelmentioning

confidence: 91%

Radiation dominated implosion with nano-plasmonics

2018

View full text Add to dashboard Cite

Inertial Confinement Fusion is a promising option to provide massive, clean, and affordable energy for humanity in the future. The present status of research and development is hindered by hydrodynamic instabilities occurring at the intense compression of the target fuel by energetic laser beams. A recent proposal by Csernai et al. 1 combines advances in two fields: detonations in relativistic fluid dynamics and radiative energy deposition by plasmonic nano-shells. The initial compression of the target pellet can be eliminated or decreased, not to reach instabilities. A final and more energetic, short laser pulse can achieve rapid volume ignition, which should be as short as the penetration time of the light across the target. In the present study, we discuss a flat fuel target irradiated from both sides simultaneously.Here we propose an ignition energy with smaller compression, largely increased entropy and temperature increase, and instead of external indirect heating and huge energy loss, a maximized internal heating in the target with the help of recent advances in nano-technology. The reflectivity of the target can be made negligible, and the absorptivity can be increased by one or two orders of magnitude by plasmonic nano-shells embedded in the target fuel. Thus, higher ignition temperature and radiation dominated dynamics can be achieved. Here most of the interior will reach the ignition temperature simultaneously based on the results of relativistic fluid dynamics. This makes the development of any kind of instability impossible, which up to now prevented the complete ignition of the target.

show abstract

Section: Analytic Modelmentioning

confidence: 91%

Radiation dominated implosion with nano-plasmonics

2018

View full text Add to dashboard Cite

show abstract

“…Such simplified models were developed and studied in Refs. [5,7,8,9,10], but all these were missing expansion. Thus, the important question to be studied is whether the important freeze out features, pointed out in the earlier works, are not smeared out by the expansion of the system?…”

Section: Introductionmentioning

confidence: 99%

Kinetic description of particle emission from expanding source

Magas

Csernai

2008

Physics Letters B

View full text Add to dashboard Cite

The freeze out of the expanding systems, created in relativistic heavy ion collisions, is discussed. We combine kinetic freeze out equations with Bjorken type system expansion into a unified model. The important feature of the proposed scenario is that physical freeze out is completely finished in a finite time, which can be varied from 0 (freeze out hypersurface) to infinity. The dependence of the post freeze out distribution function on the freeze out time will be studied. As an example, model is completely solved and analyzed for the gas of pions. We shall see that the basic freeze out features, pointed out in the earlier works, are not smeared out by the expansion of the system. The entropy evolution in such a scenario is also studied.Comment: 8 pages, 4 figures. Accepted to Physics Letters

show abstract

“…In this Section we present a model for a gradual FO through a finite layer, where the thickness L can be varied from zero to infinity, thus making a bridge between the two extreme schemes [25] and time-like [26] layer; see also [27,28].…”

Section: Introductionmentioning

confidence: 99%

“…In order to get an idea about the physical scales of the total FO time L of the FO layer, we recall that the collision time τ coll between the pions, which are the dominant hadrons, depends on temperature τ coll (T ) = 12 f 4 π /T 5 [35,36,37], where f Here, we will not repeat the theoretical developments of [25,26,27,28] in detail, but should consider the essential steps relevant for our investigations.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pion mass shift and the kinetic freeze-out process

Zschocke

Csernai

2009

Eur. Phys. J. A

View full text Add to dashboard Cite

The kinetic Freeze Out process of a pion gas through a finite layer with time-like normal is considered. The pion gas is described by a Boltzmann gas with elastic collisions among the pions. Within this model, the impact of the in-medium pion mass modification on the Freeze Out process is studied. A marginal change of the Freeze Out variables temperature and flow velocity and an insignificant modification of the frozen out particle distribution function has been found.

show abstract

Covariant description of kinetic freeze-out through a finite time-like layer

Cited by 15 publications

References 27 publications

Radiation dominated implosion with nano-plasmonics

Radiation dominated implosion with nano-plasmonics

Kinetic description of particle emission from expanding source

Pion mass shift and the kinetic freeze-out process

Contact Info

Product

Resources

About