Citation
Abstract
The JPL multi-pole linear ion trap standard (LITS) has demonstrated excellent frequency stability and improved immunity from two of its remaining systematic effects, the second-order Doppler shift and second-order Zeeman shift. In this article, we report developments that reduce the residual systematic effects to less than 6 × 10−17. We also report a new mode of operation that enables improved shortterm stability to less than 4×10−14/τ1/2, and the highest ratio of atomic transition frequency to frequency width (atomic line Q) ever demonstrated in a microwave atomic standard operating at room temperature. With these advances, the multipole LITS provides a new and unique timekeeping and reference capability in the JPL Frequency Standards Test Laboratory, with broader applicability to national metrology and timekeeping laboratories.
Details
- Volume
- 42-166
- Published
- August 15, 2006
- Pages
- 1–15
- File Size
- 344.0 KB