Inclusive particle production in the geometrical two-chain model of soft hadronic interactions.
The geometrical two-chain model was established to describe the soft, low-energy hadronic interaction. The main aim of the model was the applicability of creating a fast and accurate Monte Carlo interaction generator of such processes in complex and time-consuming simulation calculations as, e.g., that of the simulations of the hadron passage through the thick media. In this paper we present the model predictions concerning the inclusive particle production characteristics. A comparison with the fritiof model frequently used for high-energy event generation and experimental results is given.
The influence of baryon resonances and vector mesons on cosmic ray cascades
The Delta , rho , K* resonances have been incorporated in the 'leading cluster' of ultra-high-energy interactions. One important consequence results in deep modifications of hadron cascading in EAS, especially in the case of the rho , which attenuate strongly the 'leading particle effect' in pi +or--air-nucleus collisions. The maximum development occurs at higher altitude and the absorption is faster, as suggested by the experiment.
Modeling Coherent Backscattering Errors in Fiber Optic Gyroscopes for Sources of Arbitrary Line Width
We present a new model of the noise and drift induced by coherent backscattering in a fiber optic gyroscope (FOG) interrogated with a light source of arbitrary temporal coherence. This study is critical to understand whether a FOG driven with a laser instead of a broadband source can attain high sensitivity and stability, which would have the overwhelming benefit of improving the FOG scale factor stability by at least ten-fold and would enable the use of FOGs for inertial navigation of aircrafts. Analytical and numerical solutions bring to light two significant new predictions. First, coherent-backscattering noise can be made negligibly small by utilizing a laser with a very narrow linewidth (less than ~ 20 kHz), although in this regime the drift is high. Second, by using a laser with a broad linewidth (greater than ~ 10 MHz), both the noise and the drift are low enough for aircraft inertial navigation. The dependencies of the noise and drift on fiber loss, loop coupling coefficient, and backscattering coefficient are also presented to define the optimum mode of operation of this new class of FOGs.