Coherent Excitation of the 6S1/2 to 5D3/2 Electric Quadrupole Transition in 138Ba+

The electric dipole-forbidden, quadrupole 6S1/2 5D3/2 transition in Ba+ near 2051 nm, with a natural linewidth of 13 mHz, is attractive for potential observation of parity non-conservation, and also as a clock transition for a barium ion optical frequency standard. This transition also offers a direct means of populating the metastable 5D3/2 state to measure the nuclear magnetic octupole moment in the odd barium isotopes. Light from a diode-pumped, solid state Tm,Ho:YLF laser operating at 2051 nm is used to coherently drive this transition between resolved Zeeman levels in a single trapped 138Ba+ ion. The frequency of the laser is stabilized to a high finesse Fabry Perot cavity at 1025 nm after being frequency doubled. Rabi oscillations on this transition indicate a laser-ion coherence time of 3 ms, most likely limited by ambient magnetic field fluctuations.Comment: 5 pages, 5 figure

A Fundamental Misunderstanding: FCC Implementation of U.S. WTO Commitments

In bilateral and multilateral trade agreements, the United States has agreed to open the market for telecommunications services to foreign service suppliers, an obligation implemented by the FCC since 1998. In contrast, the United States has made no commitments with respect to broadcasting services or broadcast licenses. This article clarifies the different treatment of telecommunications services and broadcast services in U.S. trade obligations and FCC orders

The Infiltration of a Lagoon Effluent for Final Waste Treatment

The study and literature herein described was instituted for the purpose of examining the application of the stabilization pond effluent at Madison, South Dakota, to a soil type present in that area. The literature emphasized the importance of investigating the soil and water at each location because of variations witnessed in nearly every land application system that has been studied. With much assistance from officials of Madison, South Dakota, a lysimeter study was performed at the Madison lagoon by passing stabilization pond effluent through local soil,, collecting the resultant water to measure the rate of infiltration and analyzing the resultant water quality. In this way the following objectives were to be met: 1. To determine the feasibility of operating an infiltration percolation basin in the Madison area based on limitations posed by infiltration rate. 2. To evaluate the water quality resulting from such a basin. 3. To determine if the water quality standards could be met by treatment with such a basin

The trace elemental composition of cementum by laser spectrochemical microanalysis

Thesis submitted to the Faculty of the Boston University, School of Graduate Dentistry, toward the requirements for the degree of Master of Science in Dentistry (M.Sc.D.)Thesis (M.Sc.D.)--Boston, Boston University, School of Graduate Dentistry, Department of Periodontology.Typewritten

A Fundamental Misunderstanding: FCC Implementation of U.S. WTO Commitments

In bilateral and multilateral trade agreements, the United States has agreed to open the market for telecommunications services to foreign service suppliers, an obligation implemented by the FCC since 1998. In contrast, the United States has made no commitments with respect to broadcasting services or broadcast licenses. This article clarifies the different treatment of telecommunications services and broadcast services in U.S. trade obligations and FCC orders