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Faraday cup 486
feedthroughs 593
-, bellows sealed 596
-, dynamic 596,597,598
-, electrical 593
-, liquid 598
-, magnetic 597
-, manipulator systems 598
-, motion 594
-, spindle 603
-, with elastomer sealing 594
-, with ferrofluid sealing 597
Fernico, see ‘Kovar’
ferrofluids 597
Fick’s diffusion laws 54,91
filaments
-, lanthaniumhexaboride 430
-, platinum 429,686
-, rhenium 429,687
-, thoriated iridium 429
-, tungsten 428,688
-, yttrium oxide coated iridium 429
fine control gas admission systems
-, bakeable UHV dosing valve 608
-, mass flow controller 611
-, needle valve 607
-, permeation valve 609
fine-mesh splinter guard, see ‘splinter guard’
fine vacuum 368
flanges
-, with elastomer sealing 576
-, with metal sealing 581
flow meter 512
flow rate, see ‘throughput’
fluorine 490
fluoro esters, see ‘synthetic lubricants’
flux 589,590
Fomblin oil 225,356,628,630,673,674
foreline trap, use of 83,196,301,310,334,344
Forrestite 639
free-molecule heat conductivity 52,53
free-molecule viscosity 43
free path length, distribution function for 27
Freon 525,652
fresh oil lubricated multivane pump, see ‘multivane pump, oil sealed’
frictionless flow 101
