Dependence of the prompt fission γ-ray spectrum on the entrance channel of compound nucleus: Spontaneous vs. neutron-induced fission
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72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS↗
Engineering topics
Hughes, R.
Publications and source records attributed to Hughes, R..
Juno Microwave Radiometer Patch Array Antennas
Juno is a mission in the NASA New Frontiers Program with the goal of significantly improving our understanding of the formation and structure of Jupiter. This paper discusses the modeling and measurement of the two patch array antennas. An overview of the antenna architecture, design and development at JPL is provided, along with estimates of performance and the results of measurements.
Chamberlain, N.↗
Microtechnology in Telecommunicaton for Spacecraft Cost and Mass Reduction
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Ka-Band High Gain Antenna X-Band digital receiver ↗
Microtechnology in Telecommunications for Spacecraft Cost and Mass Reduction
This paper examines the incorporation of both microelectronics and micromachining (termed microtechnologies) as applied to deep space telecommunication subsystems. Using the Pluto Fast Flyby Pre-Project as a main case study we have reduced the subsystem mass by 50%.
MCM amplifiers filters switches Goldstone Deep Spa↗
Scalable standard optical sources in the VUV: Emissions from electron impact on metals
The use of electron impact on metals in the development of a compact optical standard lamp in the vacuum ultraviolet is described. Two different mechanisms are exploited, transition radiation and bremsstrahlung. Transition radiation will be used as a primary standard from 1200A to 3000A using 10 keV electron impact on tungsten. Bremsstrahlung will be used in the soft X-ray region below 1200A to less than 5A as an optical transfer standard from 4 keV electron impact on tantalum or tungsten.
Hughes, R.↗