INELASTIC SCATTERING AMPLITIJDES”
New results from inelastic two-body scattering reactions are reviewed. Although predictions of SU(3), factorization and simple Regge theory are found to be qualitatively in agreement with the data, direct channel or absorption effects afford the simplest interpretation of the detailed features of the scattering amplitudes.
A determination of the effective B and ϱ trajectories from the reaction π+p→ωΔ++
Abstract We present results of two high-statistics bubble chamber measurements of the reaction π + → ω 0 Δ ++ at incident momenta of 2.67 and 7.1 GeV/ c . The energy dependence of the natural parity exchange projection gives a Regge trajectory consistent with the accepted ϱ trajectory. The unnatural parity exchange projection gives a B trajectory consistent with our current knowledge of the pion trajectroy.
Microwave source with enhanced radiation power based on orbitron MASERs
We have proposed the design of high power microwave source in a vacuum tube based on the theory of negative mass instability. The proposed source does not operate based on a slow-wave structure but instead makes use of accelerated charged particles. In our structure, an electron emitter injects the charged particles into to the cavity. Emitted particles move around the anode, which leads to electron acceleration and emission of electromagnetic waves with a specific frequency. In this paper, we have enhanced the output power and frequency of microwave source by variation of particles initial energy and the number of anodes incorporating their specific arrangement and applied voltages. Working at room temperature, compactness, wide bandwidth, and tunability of output frequency are among the advantages of the proposed source.