## Abstract A simple apparatus to maintain tissues samples at subβzero temperatures during dehydration, infiltration, and polymerization is described. The device uses a conventional siphonβtype carbon dioxide gas cylinder to maintain an aluminum block at temperatures as low as β35Β°C for over 15 hou
A simple, low-cost burst disc for use at cryogenic temperatures
β Scribed by T More; K Johnson
- Publisher
- Elsevier Science
- Year
- 1998
- Tongue
- English
- Weight
- 74 KB
- Volume
- 38
- Category
- Article
- ISSN
- 0011-2275
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β¦ Synopsis
We have developed a burst disc that can be used with superfluid helium and whose bursting pressure can be easily and accurately adjusted. It is both low cost and simple to construct. The burst pressure can be set with an accuracy of better than 1.7 kPa with a minimum burst pressure of 11 kPa.
π SIMILAR VOLUMES
by a movable quarter-wave dielectric insert in the waveguide. The resonator described was used to observe cyclotron resonance. The semiconductor specimen is put in with the help of the holder-light pipe 3 through a 2 mm diameter hole in the end (see Figure 1) and is placed in the antinode of the el
simple technique is described for fabricating a high conductivity silver~luminium joint for use in the construction of an aluminium superconducting heat switch which can be operated in the millikelvin temperature range.
It can be seen from Table 1 that the unloaded Q depends on the way in which the superconducting shields are made. When using a niobium shield made from a solid block, the Q is 5 x l0 s , but the unloaded Q is reduced for the lead covered brass shield.