A novel form of mass spectrometer has been used to measure the masses, widths, and cross sections of the g, w , 2!(958), and @mesons near their respective thresholds in the reaction a-+ p -missing mass + n . The incident momentum is varied in small steps through the threshold while neutrons of a given momentum are detected near zero degrees. The lower limit of the c.m. momentum P* at which measurements have been made ranges from about 50 MeV/c at the @ t o about 30 MeV/c at the 7. A somewhat low value for the w mass, 782.3 1-0.6 MeV, is found. The width of the 2! is < 1.9 MeV (95% confidence level). All four mesons show evidence of S-wave production, with values of u/P* of 21.2 1-1.8, 0.35 i0.03, and 0.2910.06 pb/(MeV/c) for the q, A ! , and @, respectively. A rapid rise in the w cross section appears to be modified by a final-state interaction. The effect of this rise can probably be seen in some Sli pion-nucleon phase-shift solutions. Evidence is also presented of a sudden drop in the s i n -mass spectrum just above the threshold for the production of a KiKpair. The paper includes a comprehensive discussion of the method and of the details of the spectrometer.-

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Abstract-This paper presents work that was performed to design a compact flywheel energy storage solution for a fuel cell powered transit bus with a focus on commercialization requirements. For hybrid vehicle applications, flywheels offer much higher power densities than conventional batteries. The presented design attempts to maximize the use of lower-cost technologies. The rotor relies primarily on steel for the flywheel structure, and emphasis is placed on size reduction for vehicle packaging advantages Simulations of bus configurations on measured routes was performed using PSAT to correctly size the flywheel energy storage system.

Abstract-Transient three-dimensional (3-D) electromagnetic analyses have been performed on armatures and rails which are intended to be used for high launch energy applications. Coupled magnetic and thermal diffusions were solved within moving armatures in both square bore and round bore rail launchers. Current, magnetic field, body force and temperature distributions in the armature and rail conductors were predicted and compared. The predicted mechanical and thermal loading outputs can be further used for launcher structural analysis and rail cooling design.