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Growth of mercuric iodide (hgi2) for nuclear radiation detectors
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Schnepple, W. F. Vandenberg, L. |
| Copyright Year | 1988 |
| Description | Mercuric iodide is a material used for the fabrication of the sensing element in solid state X-ray and gamma ray detecting instruments. The operation of the devices is determined to a large degree by the density of structural defects in the single crystalline material used in the sensing element. Since there were strong indications that the quality of the material was degraded by the effects of gravity during the growth process, a research and engineering program was initiated to grow one or more crystals of mercuric iodide in the reduced gravity environment of space. A special furnace assembly was designed which could be accommodated in a Spacelab rack, and at the same time made it possible to use the same growth procedures and controls used when growing a crystal on the ground. The space crystal, after the flight, was subjected to the same evaluation methods used for earth-grown crystals, so that comparisons could be made. |
| File Size | 511675 |
| Page Count | 18 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19890010922 |
| Archival Resource Key | ark:/13960/t77t2kv9h |
| Language | English |
| Publisher Date | 1988-10-01 |
| Access Restriction | Open |
| Subject Keyword | Materials Processing Crystal Growth Vapor Deposition Crystal Defects Gravitational Effects Iodides Radiation Detectors Nuclear Radiation Space Commercialization Space Processing Microgravity Mercury Compounds Crystal Structure Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
