Absolute intensities and perpendicular temperatures of supersonic beams of polyatomic gases
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2020, Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and AtomsCitation Excerpt :While contributions determining T⊥ have proven to be difficult, measurements of TII have been done extensively in the past [8]. In doing so, the parallel temperature TII typically lies in the order of 0.1 to a few Kelvin while the perpendicular temperature T⊥ should be substantially lower, as predicted by theoretical considerations [9]. Another important property of the beam is its center line density, which decreases with increasing distance from the nozzle and can be estimated theoretically from the initial nozzle parameters [9].
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