1,028 research outputs found

    Calculation of AGARD Wing 445.6 Flutter Using Navier-Stokes Aerodynamics

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    An unsteady, 3D, implicit upwind Euler/Navier-Stokes algorithm is here used to compute the flutter characteristics of Wing 445.6, the AGARD standard aeroelastic configuration for dynamic response, with a view to the discrepancy between Euler characteristics and experimental data. Attention is given to effects of fluid viscosity, structural damping, and number of structural model nodes. The flutter characteristics of the wing are determined using these unsteady generalized aerodynamic forces in a traditional V-g analysis. The V-g analysis indicates that fluid viscosity has a significant effect on the supersonic flutter boundary for this wing

    Polarization transfer in the 16^{16}O(p,p)(p,p') reaction at forward angles and structure of the spin-dipole resonances

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    Cross sections and polarization transfer observables in the 16^{16}O(p,p)(p,p') reactions at 392 MeV were measured at several angles between θlab=\theta_{lab}= 0^\circ and 14^\circ. The non-spin-flip (ΔS=0{\Delta}S=0) and spin-flip (ΔS=1{\Delta}S=1) strengths in transitions to several discrete states and broad resonances in 16^{16}O were extracted using a model-independent method. The giant resonances in the energy region of Ex=19E_x=19-27 MeV were found to be predominantly excited by ΔL=1{\Delta}L=1 transitions. The strength distribution of spin-dipole transitions with ΔS=1{\Delta}S=1 and ΔL=1{\Delta}L=1 were deduced. The obtained distribution was compared with a recent shell model calculation. Experimental results are reasonably explained by distorted-wave impulse approximation calculations with the shell model wave functions.Comment: 28 pages RevTex, including 9 figures, to be published in Phys. Rev. C.; a typo in Eq. (3b) was correcte

    Thin Ice Target for 16^{16}O(p,p') experiment

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    A windowless and self-supporting ice target is described. An ice sheet with a thickness of 29.7 mg/cm2^2 cooled by liquid nitrogen was placed at the target position of a magnetic spectrometer and worked stably in the 16^{16}O(p,p)(p,p') experiment at Ep=392E_{p}=392 MeV. Background-free spectra were obtained.Comment: 14 pages, 4 figures, Nucl. Instr. & Meth. A (in press

    Solar neutrino measurements in Super-Kamiokande-I

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    The details of Super--Kamiokande--I's solar neutrino analysis are given. Solar neutrino measurement in Super--Kamiokande is a high statistics collection of 8^8B solar neutrinos via neutrino-electron scattering. The analysis method and results of the 1496 day data sample are presented. The final oscillation results for the data are also presented.Comment: 32pages, 57figures, submitted to Physical Review
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