CONSTITUTION:A support membrane 2 supporting a temperature measurement element 1 has a space 2a for passing through liquid helium and is fixed on an inner pipe 3' in one body by welding. A lead wire 4 taking out output of the element 1 is led to an airtight terminal 5 attached on the ...
Molecular mobility and relaxation processes in polyimide near the temperature of liquid helium ☆It was shown that results of measuring ultrasonic velocity in polyimide prepared from diphenyloxide tetracarboxylic acid dianhydride and diaminodiphenyl ester near 0掳K enable conclusions to be drawn about the...
Boiling phenomena in liquid helium II (He II) and liquid helium I (He I) were experimentally investigated. The temperature oscillations during boiling in He II are the result of the propagation of the thermal boundary layer and/or the expansion of a vapor bubble to the location of the ...
BEIJING, Jan. 14 (Xinhua) -- Chinese scientists have achieved ultra-low temperature refrigeration -- below minus 273 degrees Celsius -- in a recently synthesized supersolid candidate. The temperature was reached without the use of liquid helium, a conventional material that has long been used in ...
The shock compression experiment of liquid helium is an available way to gain properties of specimen at high temperatures and pressures. Based on Fluent, a thermal insulation analysis and design of a liquid helium temperature target in the environment condition of 100 Pa for shock compression experim...
1. H. K. Onnes, Further experiments with liquid helium D - On the change of the electrical resistance of pure metals at very low temperatures, etc V The disappearance of the resistance of mercury. P K Akad Wet-Amsterd 14, 113-115 (1911). ...
IV. The resistance of pure mercury at helium temperatures G. Holst . These results confirm and extend the conclusions drawn from the previous experiments upon the change with temperature of the resistance of metals. Moreover, it was in the first place shown that liquid helium is an ......
The operation of the helium‐filled proportional counter (HFPC) has been investigated at low temperatures below liquid‐helium temperature, 4.2 K. It has been found that the gas gain as a function of the anode voltage is not appreciably changed by the temperature of the filling gas, but conti...
PURPOSE: To provide a valve usable also in the horizontal state as low temperature valve used for a line for passing low temperature liquid such as liquid helium. ;CONSTITUTION: The tip part of a valve rod 10 fitted with a valve body 9 is inserted in a valve case 7 from a valve rod ...
PURPOSE: To provide a helium low temperature refiner wherein a liquefied component separated by a gas liquid separating means can be reliably discharged, and discharge of helium gas can be suppressed to a minimum limit and to provide an operation method thereof. ;CONSTITUTION: A means to discharg...