A simple seal for leading wires into a vacuum system

Batchelder, D. N.; Sidey, G.R.

doi:10.1088/0022-3735/2/6/418

Cited by 2 publications

(1 citation statement)

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“…(ii) Two gold/iron vs. chromel thermocouples (8 and 9) to measure sample temperature at its two ends. The junctions of the thin (0"08 mm diameter) thermocouple wires are fixed to the inner tube by drafting tape and the wires are brought out of the VTSC through a vacuum seal (Batchelder & Sidey, 1969) without interruption. (iii) Two heating coils to vary sample temperature, one (6) mounted below, the other (7) above the cadmium strips.…”

Section: Description Of the Vtscmentioning

confidence: 99%

A variable-temperature sample container for low-temperature neutron powder diffraction

Arzi¹,

Sándor²

1983

J Appl Cryst

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A variable-temperature sample container was developed for the neutron powder diffraction study of crystal structures and phase transitions in solidified gases. It consists of two coaxial tubes made of boronfree fused silica and fitted with heating coils and thermocouples. The exchange space between the tubes is filled with low-pressure helium gas controlled by two fine needle valves. Used in conjunction with a centre-stick-type liquid-helium cryostat and a proportional temperature controller, it maintains a powder sample of about 8 cm 3 volume at a constant temperature anywhere in the 4.2 to 77.4 K temperature range. Its stability is not worse than _+ 0.15 K and the liquidhelium consumption is about 1 litre a day above 17 K, increasing up to 6 litres a day at lower temperatures. It can also be used for the preparation of fine-grained powder samples directly from the gas phase.

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Section: Description Of the Vtscmentioning

confidence: 99%