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33646118173
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note
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⊥/X, the ratio of the transverse velocity component imparted by the centrifugal force to the flow velocity. Thus, this effect can be disregarded.
-
-
-
-
21
-
-
85088337250
-
-
note
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min = 1 mK. Swatting therefore becomes inconsequential for molecules directed slightly away from the rotor orbit.
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-
-
-
25
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-
33646105807
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-
note
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2.
-
-
-
-
29
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33646092226
-
-
Kluber Lubrication, Londonderry, NH
-
Nonvolatile vacuum grease: Kluber Lubrication, Londonderry, NH.
-
Nonvolatile Vacuum Grease
-
-
-
30
-
-
33646081464
-
-
note
-
To prevent the motor from overheating, the manufacturer recommended running water through the housing and around the stator. Due to slight leakage in the internal seals of the motor, this cooling method was not feasible in our vacuum chamber, so we bolted the motor onto a water-cooled copper plate. However, if run too long at high speed, the rotor gradually heats due to friction (with the stationary inlet needle as well as in the spindle's ball bearings). To minimize this, data were taken in batches between "rest periods" in which the rotor was allowed to coast at low speed. The rotor temperature was monitored by observing the TOF spectrum of a Xe beam. To avoid overheating, we operated the motor at ω < 700 rps, much below the rated maximum of 1333 rps. It would be better to circulate a low vapor pressure vacuum oil through the motor housing.
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-
-
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31
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33646111860
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PEEK: Scientific Instrument Services Inc., Ringoes, NJ
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PEEK: Scientific Instrument Services Inc., Ringoes, NJ.
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-
-
-
35
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33646115389
-
-
note
-
15 involves complications that may accommodate this broadening. In particular, increases in the seeding mole fraction caused by deviations from equilibrium flow within the rotor or from centrifugal fractionation would be expected to produce higher parallel temperatures for the seeded molecule.
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37
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0032326827
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Private communication
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Ye, J. Private communication.
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Ye, J.1
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Hulet, R.G.6
-
40
-
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33646086667
-
-
note
-
rot. = 850 m/s); for ISS and MCE it was negligible. Note that, at the low kinetic energies considered here, eq 12 is a crude approximation (omitting glory and orbiting resonance structure, cf. ref 22) but adequate for the rough estimating of attenuation by collisions.
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42
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77956699437
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0001549440
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