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External bulb variable volume maser
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Reinhardt, V. S. |
| Copyright Year | 1978 |
| Description | A maser functioning as a frequency standard stable to one part in 10 to the 14th power includes a variable volume, constant surface area storage bulb having a fixed volume portion located in a resonant cavity from which the frequency standard is derived. A variable volume portion of the bulb, exterior to the resonant cavity, has a maximum volume on the same order of magnitude as the fixed volume bulb portion. The cavity has a length to radius ratio of at least 3:1 so that the operation is attained without the need for a feedback loop. A baffle plate, between the fixed and variable volume bulb portions, includes apertures for enabling hydrogen atoms to pass between the two bulb portions and is an electromagnetic shield that prevents coupling of the electromagnetic field of the cavity into the variable volume bulb portion. |
| File Size | 879476 |
| Page Count | 10 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19790006191 |
| Archival Resource Key | ark:/13960/t16m8211x |
| Language | English |
| Publisher Date | 1978-12-05 |
| Access Restriction | Open |
| Subject Keyword | Lasers And Masers Frequency Shift Bulbs Masers Frequency Standards Hydrogen Atoms Cavity Resonators Electromagnetic Shielding Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Patent |
