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We present results on the jet structure observed in multi-hadronic events produced by e+e-annihilation in the Mark I magnetic detector at SPEAR. The evidence for jet structure and the jet axis angular di.stribution are reported. We give inclusive distributions of the hadrons in Feynman x, rapidity, and transverse momentum relative to the jet axis.
Classical collisions with an ideal gas generate non-Maxwellian distribution functions for a single ion in a radio frequency ion trap. The distributions have power-law tails whose exponent depends on the ratio of buffer gas to ion mass. This provides a statistical explanation for the previously observed transition from cooling to heating. Monte Carlo results… (More)
We report high-contrast storage of 64-kbit digital data pages in a photorefractive polymer material. Singlepage writing, reading, and erasing operations were demonstrated with a dual-function-dopant polymeric material having a dark lifetime of several days. Data were reconstructed without error by use of several simple readout algorithms.
As the finesse of a Fabry-Perot optical cavity increases to about 20,000, the fringe width (approximately 10 kHz for a 50-cm cavity) is sufficiently narrow for transverse-mode splittings to be resolved by using a highly stabilized ring dye laser. A perturbative theory interprets this effect as a slight deviation of the cavity from cylindrical symmetry, the… (More)
Trapped ions cooled by a buffer gas can form an extended diffuse cloud dominated by power-law tails, rather than the Gaussian expected by Maxwell-Boltzmann statistics, as described in PRL 102, 063001 (2009).
A new method is proposed for laser cooling atoms with Doppler shifts an order of magnitude larger than the homogeneous linewidth of the atomic transition. Two traveling waves cross at an oblique angle and form long-wavelength standing waves. The resulting broadband stimulated cooling forces are predicted to stop 0.1% of the flux of a 500-K atomic sodium… (More)