TSS core equipment

Electron Emission for Electrodynamic Tether Systems in Space

“…2shows what potential needed across the grid in order to emit a certain current entering the device. 2,3…”

“…This would be the best emitter to use in configuration c. An important note is that the surface area for the field emitter was allowed to float because the maximum potential that a Spindt FEA can have is 120 V. The TC, on the other hand, was not allowed to float because of the complexities involved in designing an abnormally large electron gun and the effects on the system were not understood enough as of yet. The perveance of the TC was set to 7.2 micropervs because that was a representative value used on a previous Tethered Space Satellite mission 3 . It was not known how the perveance changes with the overall emitter size and thus nothing larger could be analyzed effectively.…”

Migration, Mobility, Integration, Segregation – Migrations within the Global North

“…The exogenous characteristics are built on skewed (over-estimated or under-estimated) data concerning endogenous factors. For example, the stereotype of Japanese citizens as both temporary migrants and as wealthy, healthy investors has paved the way for the unproblematic integration of Japanese students and low-skilled workers in Italy (Bonifazi, 1998). In another example, President Trump calling for migration from Norway used a label that was effectively a proxy for white Christian migrants.…”