144,746 research outputs found
Separation technique provides rapid quantitative determination of cesium-137 in irradiated nuclear fuel
Potassium cobalt ferrocyanide is used to determine cesium-137 activity in irradiated fuel samples. It preferentially removes cesium from an acid solution of the fuel material. The residue is filtered and analyzed with a gamma spectrometer
Epoxy-coated containers easily opened by wire band
Epoxy coating reduces punctures, abrasions, and contamination of synthetic cellular containers used for shipping and storing fragile goods and equipment. A wire band is wound around the closure joint, followed by the epoxy coating. The container can then be easily opened by pulling the wire through the epoxy around the joint
Spherical joint connects axially misaligned flanges
Interconnecting straight tube connects axially misaligned flanges in a duct assembly. It adjusts to accommodate variations in relative location of the flanges by pivoting. Adjustment is by spherical mating faces and a spherical-faced indexing swivel flange for bolting backup
Monte Carlo direct view factor and generalized radiative heat transfer programs
Computer programs find the direct view factor from one surface segment to another using the Monte carlo technique, and the radioactive-transfer coefficients between surface segments. An advantage of the programs is the great generality of problems treatable and rapidity of solution from problem conception to receipt of results
Method for determining properties of microinstabilities of a magnetized plasma
Study comprises a determination of the plasma density at which absolute density becomes predominant by using the dielectric properties at this incipient unstable state. Relationships between wavelength, frequency, and density microinstabilities are used to derive the spatial dielectric function
Study to investigate and improve the zinc electrode for spacecraft electrochemical cells Final report, 30 May 1966 - 30 Jun. 1967
Zincate diffusivity in alkaline electrolyte determined as function of potassium hydroxide concentration and temperatur
Calorimeter measures high nuclear heating rates and their gradients across a reactor test hole
Pedestal-type calorimeter measures gamma-ray heating rates from 0.5 to 7.0 watts per gram of aluminum. Nuclear heating rate is a function of cylinder temperature change, measured by four chromel-alumel thermocouples attached to the calorimeter, and known thermoconductivity of the tested material
A quantum computer using a trapped-ion spin molecule and microwave radiation
We propose a new design for a quantum information processor where qubits are
encoded into Hyperfine states of ions held in a linear array of individually
tailored microtraps and sitting in a spatially varying magnetic field. The
magnetic field gradient introduces spatially dependent qubit transition
frequencies and a type of spin-spin interaction between qubits. Single and
multi-qubit manipulation is achieved via resonant microwave pulses as in
liquid-NMR quantum computation while the qubit readout and reset is achieved
through trapped-ion fluorescence shelving techniques. By adjusting the
microtrap configurations we can tailor, in hardware, the qubit resonance
frequencies and coupling strengths. We show the system possesses a side-band
transition structure which does not scale with the size of the processor
allowing scalable frequency discrimination between qubits. By using large
magnetic field gradients, one can readout and reset the qubits in the ion chain
via frequency selective optical pulses avoiding the need for many tightly
focused laser beams for spatial qubit addressing.Comment: 7 pages, 2 figures. New references added, additional material on
quantum error correction and device tolerance
- …