Cryogenic cell
Abstract
A cryogenic cell comprising a sealed external annular chamber, adapted to vacuum, enclosing totally a sealed inner chamber for the storage of a solid/liquid refrigerant is proposed. The external chamber has a well in its upper region immediately above and in contact with the top of the inner chamber, which is connected at its lower end to a section containing an adsorbent, the latter being connected at its lower end to a further chamber adapted for the reception of a radiation detector. The cell is suitable for use in maintaining the semiconductor detector of a neutron logging tool at the required low temperature.
- Publication:
-
Patent Application British Petroleum Co. Ltd
- Pub Date:
- November 1984
- Bibcode:
- 1984bpcl.rept.....M
- Keywords:
-
- Boreholes;
- Compartments;
- Cryogenic Equipment;
- Neutron Activation Analysis;
- Cryopumping;
- Neutron Counters;
- Patent Policy;
- Semiconductor Devices;
- Instrumentation and Photography