Development of Miniature Microwave Discharge Neutralizer for Miniature Ion Thruster

DEVELOPMENT OF MINIATURE MAGNETOMETERS Development of Miniature Magnetometers

ome of the highlights of the ongoing program within the Sensor Science Group of APL’s Milton S. Eisenhower Research and Technology Development Center to develop novel magnetometers are summarized. In particular, two approaches are described: a magnetostrictive device based on the deflection of a Terfenol-D coated single-crystal silicon cantilever and a Lorentz-force device based on a classical ...

Hollow Cathode and Low-Thrust Extraction Grid Analysis for a Miniature Ion Thruster

Miniature ion thrusters are well suited for future space missions that require high efficiency, precision thrust, and low contamination in the mN to sub-mN range. JPL’s miniature xenon Ion (MiXI) thruster has demonstrated an efficient discharge and ion extraction grid assembly using filament cathodes and the internal conduction (IC) cathode. JPL is currently preparing to incorporate a miniature...

Implementation of a 1⁄4 Inch Hollow Cathode into a Miniature Xenon Ion Thruster (MiXI)

Over the last decade, miniature ion thruster development has remained an active area of research do to its low power, low thrust, and high efficiency, however, due to several technical issues; a flight level miniature ion thruster has proved elusive. This thesis covers the design, fabrication, assembly, and test of an altered version of the Miniature Xenon Ion thruster (MiXI), originally develo...

Micropropagation of miniature rose cultivars

Miniature Trapped-Ion Frequency Standard with Yb

We describe the development and frequency instability measurements of a highly miniaturized, buffer gas cooled, trapped-ion atomic clock. The clock utilizes the 12.6 GHz hyperfine transition of the Yb ion. A custom-built 3 cm vacuum package containing the ion trap is integrated with other key elements of the atomic frequency standard, including a photo multiplier tube, miniaturized laser source...