113,190 research outputs found
Is Gamma-ray Absorption by Induced Electric Fields Important in the Pulsar Magnetospheres?
Although the unified formula for gamma-ray absorption process involving both
the magnetic field and a perpendicular electric field derived by Daugherty &
Lerche (1975) is correct, we argued in this paper that their conclusion that
the induced electric fields are important in the pair formation process in the
pulsar magnetospheres is wrong and misleading. The key point is that usually
the direction of a gamma photon at the emission point observed in the
laboratory frame should be (v/c, 0, [1-(v/c)^2]^{1/2}) rather than (0, 0, 1),
where v is the co-rotating velocity. This emission direction is just the one
which results in zero attenuation coefficient of the gamma photon. Calculation
shows that after the photon has moved a distance, its direction lead to the
result that the induced electric field is also of minor importance. Thus only
gamma-B process is the important mechanism for the pair production in the
pulsar magnetospheres. The implications of the modification by ejecting the
induced electric field are also discussed.Comment: 4 pages, 2 Postscript figures, LaTeX, some miscomments on the
references of Harding et al are modified, Accepted for publication in
Astronomy and Astrophysics Letter
Self Interference of Single Electrodynamic Particle in Double Slit
It is by the long established fact in experiment and theory that
electromagnetic waves, here as one component of an IED particle, passing a
double slit will undergo self inference each, producing at a detector plane
fringed intensities. The wave generating point charge of a zero rest mass, as
the other component of the particle, is maintained a constant energy and speed
by a repeated radiation reabsorption/reemission scheme, and in turn steered in
direction in its linear motion by the reflected radiation field, and will
thereby travel to the detector along (one of) the optical path(s) of the waves
leading to a bright interference fringe. We elucidate the process formally
based on first principles solutions for the IED particle and known principles
for wave-matter interaction.Comment: Presentation at The 6th Int. Symp. Quantum Theory and Symmetries,
Univ. Kent, 2009
Vacuum Potentials for the Two Only Permanent Free Particles, Proton and Electron. Pair Productions
The two only species of isolatable, smallest, or unit charges +e and -e
present in nature interact with the universal vacuum in a polarisable
dielectric representation through two uniquely defined vacuum potential
functions. All of the non-composite subatomic particles containing one-unit
charges, +e or -e, are therefore formed in terms of the IED model of the
respective charges, of zero rest masses, oscillating in either of the two
unique vacuum potential fields, together with the radiation waves of their own
charges. In this paper we give a first principles treatment of the dynamics of
charge in a dielectric vacuum, based on which, combined with solutions for the
radiation waves obtained previously, we subsequently derive the vacuum
potential function for a given charge q, which we show to be quadratic and
consist each of quantised potential levels, giving therefore rise to quantised
characteristic oscillation frequencies of the charge and accordingly quantised,
sharply-defined masses of the IED particles. By further combining with relevant
experimental properties as input information, we determine the IED particles
built from the charges +e,-e at their first excited states in the respective
vacuum potential wells to be the proton and the electron, the observationally
two only stable (permanently lived) and "free" particles containing one-unit
charges. Their antiparticles as produced in pair productions can be accordingly
determined. The characteristics of all of the other more energetic
non-composite subatomic particles can also be recognised. We finally discuss
the energy condition for pair production, which requires two successive energy
supplies to (1) first disintegrate the bound pair of vaculeon charges +e,-e
composing a vacuuon of the vacuum and (2) impart masses to the disintegrated
charges.Comment: Presentation at the 7th Int Conf Quantum Theory and Symmetries (QTS
7) Prague, Aug., 2011. Includes Part B: "A Microscopic Theory of the
Neutron". Includes Part C: "A Quantum Electromagnetic Theory of the Pions,
Muons and Their Emitting Particles (I)
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