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Now if this is true than the same behave we see with Kerr focusing and light bullets would be observed in the vacuum
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Why? The researchers plan to overcome the low probabilities by simply using lots of high-energy photons in a small space, essentially rolling the dice a lot of times quickly. It doesn't change the probability, or the fact that most photons would not undergo this reaction
Hum low possiblities donot mean zero possiblities. The Fact that the Researcher are amplifieing the effect via the Resonance cavity is prove that an observable effect can be obtain.
Let look at another low possibility event, the reaction of neutrino with normal matter. How many time has it been quoted that a neutrino can past thru 20 light years of lead, the neutrino only reaction with matter is thru the weak force making this particle a ghost.
Yet in the heart of a dying sun, who on the verge of going supernova the conditions exist where the Flux density of Neutrinos interacting with the iron ash causes a pressure wave so powerful that the escaping neutrino rip the star apart and causes the one of the most energic events known.
Even iin nature the Photon photon reaction is observable, In enegy emission of Blazar Astrophysicists observe the high energy gamma rays not only interacting with it self but with infra photons
Blazar observations with the ARGO-YBJ detector
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The detection of four blazars at TeV energies (Mrk421, Mrk501, 1ES 2344+514, PKS 2155-304) proves that high energy gamma-rays are indeed emitted from blazars. The favourite emission mechanisms suggested so far to explain the Spectral Energy Distribution (SED) of blazars, characterized by two broad peaks at IR-optical-UV and MeV-GeV energies respectively, are synchrotron radiation from the electrons of the relativistic jet for the low frequency peak and inverse Compton for the high frequency peak. Analysis of the SED of gamma-ray blazars observed so far has shown that BL Lac objects present higher energy peaks with respect to FSRQ. In particular, following the classification made in Giommi & Padovani (1994) of radio selected BL Lac (RBL) and X-ray selected BL Lac (XBL), these latter seem to be the blazars with the SED shifted to the highest energies: in effect the four objects observed at TeV energies are all classified as XBL.
In searching for the best candidate high energy gamma-ray blazars for ARGO-YBJ observations, we will then look mainly at the XBL type.
Interaction with low energy photons
The other limitation to gamma-ray observations of blazars in the Very High Energy (VHE) range is the possible interaction of these photons with low energy photons of intergalactic origin. The cross section of this interaction is maximized in a way that TeV photons interact mainly with IR photons, while gamma-rays of some tens of GeV energies interact mainly with UV photons. Therefore, the intergalactic radiation fields which interact with photons detectable by ARGO-YBJ are the Intergalactic Infrared Radiation Field (IIRF), produced by dust reradiation of star formation light of all galaxies during their evolution, and the field made of extragalactic starlight photons from the IR through the UV range, which we will call ``IR-to-UV background''.
The effect of the photon-photon interaction modifies the observed VHE spectra of blazars, which intrinsically follow a power law. The photon-photon absorption produces an exponential cutoff exp(-tau(E)), where tau(E) is the optical depth.
Fact are that condition can alter the rate of such reaction in a classical QED vaccum, intense magnetic fields can and will aid in such interaction
Vacuum polarization, photon-photon scattering, and pair production
The quantum vacuum state will respond in a subtle way to less dramatic perturbations. The study of this subtle response requires high precision experiments. The well known example is the vacuum polarization (VP) effect that on distance scale of the electron-Compton-wavelength alters the 1/r-nature of Coulomb's law by a 0.1%-relative-strength correction. The VP effect is based in the response of the vacuum to highly inhomogeneous field-strength, and is in general interpreted as a dielectric particle-hole (electron-positron) photon polarizibility. Because of its range, the VP-potential can only be detected in the vicinity of the atomic nucleus. VP-effect does not violate the superposition of electromagnetic fields, thus there is no possibility here for an effective new interaction, an `anomaly' such as photon-photon scattering, or photon-electromagnetic field interaction.
Nonlinear QED vacuum effects were in depth explored in the limit that gradients of the electromagnetic fields are insignificant on the scale of the electron Compton wave length. The observation of this so called Euler-Heisenberg (EH) effective action has provided a major challenge to the experimental community seeking to verify this interesting prediction of quantum-electrodynamics (QED). Considerable effort is being mounted to obtain a direct measurement of the birefringence effect arising from anisotropic index of refraction of the vacuum exposed to strong external magnetic field, and traversed by a laser beam. As the smallness of pure QED effects testifies, the symmetry principle of gauge invariance related to charge conservation, and the process of charge renormalization combine to `protect' the electromagnetic interactions in strength and shape, these effects are not present in the nonlinear effective interaction, an anomaly, which allows photon-photon scattering.
Posted: Tue Jul 15, 2003 4:44 am Post subject: Re: Reply to admiral
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Originally posted by omegaLancer:
First the idea behind the plasma is not for the laser to confine the plasma, the plasma is being used as the medium for the Laser to focus itself via Kerr like effects....The laser is use to accelerate the Ions to Relativitic velocity. Confinement of the plasma is not needed, why would it be it the wave packet of light energy that we are using as weapon, the plasma is provide the mechanism for self focusing. This greatly increases the range of the laser.
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If that's the case, then it only matters at such ranges where a regular laser is likely to have lost much of its cohesion, and at such great range, focus is the least of your worries.
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Now if this is true than the same behave we see with Kerr focusing and light bullets would be observed in the vacuum
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Why? The researchers plan to overcome the low probabilities by simply using lots of high-energy photons in a small space, essentially rolling the dice a lot of times quickly. It doesn't change the probability, or the fact that most photons would not undergo this reaction.
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Either case both the methods describe above could account for the production of light bullet like reaction by turbo lasers.
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I don't see how, since most of the photons won't react in that manner, even in theory. And high-energy photons still don't do that in any quantity, never mind a majority which you need for this effect to be meaningful.
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We are talking about SW technology, a technology that uses exotic gas to create the effects of Turbolaser ( same gas is used for Hyperdrive) so they could be methods to create soliton like solution in SW weapon that we may not have found,
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You can't appeal to their advancement to conclude that anything is possible; by that token, all theories are equally meaningful.
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The fact is that apealing to what SW technology can do has to take into account that certain term do pop up in the EU Novels, and Solitons do...
The fact that solitons are found in"Shields of lies" . vessels of a warlord personal fleet track new republic vessels pursuing an alien starship by the soliton emission of their hyperdrive unit.
As it stand we have to see what is possible today and take on the logical progression of that technology. Modern lasers are using soliton solution in optical fiber to save enrgy and increase bandwidth, French researchers using Kerr and plasma to extend the range of laser in the atomsphere and to overcome conditions of weather that greatly hamper a laser usefulness.
Swedish and Italian scientists are working with Resonance cavities to duplicate the effect of Kerr interaction in a complete vacuum.
Even nature show us that such photon photon interaction are possible and what can be done by nature can surely be duplicated by Science. So I must conclude that Flak interaction, like other SW laser effects are not out do to the superior Galactic technology which can not only form light bullets and soliton like solutions for electromagnetic energy but can can do it in a vacuum with the need of a medium like air.