On Thu, 6 Jun 2019 17:14:01 -0700 jimlux <[email protected]> wrote:
> On 6/6/19 3:23 PM, Wayne Holder wrote: > > Perhaps also of interest: > > https://ws680.nist.gov/publication/get_pdf.cfm?pub_id=105138 > > yes, similar idea, but I'm pretty sure DSAC uses a cloud of ions, not a > single one. The working principle is different too. While the above paper creates an optical frequency standard, the DSAC is an optically pumped microwave standard, not unlike a Rubidium vapor clock, just a lot more fancy. For the working principle and performance data I recommend the following papers (there are probably more out there, but these are the ones I've read): "A Compensated Multi-pole Linear Ion Trap Mercury Frequency Standard for Ultra-Stable Timekeeping", by Burt, Diener, Tjoelker, 2008 https://doi.org/10.1109/TUFFC.2008.975 "Compact Microwave Mercury Ion Clock for Space Applications", by Prestage, Tu, Chung, MacNeal, 2007 https://tycho.usno.navy.mil/ptti/2007papers/paper25.pdf "Hg ion atomic clock for deep space navigation and science", by Prestage, Chung, Lim, Le, 2007 http://dx.doi.org/10.1117/12.734725 "Liter Sized Ion Clock with 10^-15 Stability", by Prestage, Chung, Lim, Maleki, 2005 https://doi.org/10.1109/FREQ.2005.1573976 "Mercury Atomic Frequency Standards for Space Based Navigation and Timekeepying", by Tjoelker, Burt, Chung, Hamell, Prestage, Tucker, 2011 https://tycho.usno.navy.mil/ptti/2011papers/Paper37.pdf "Mercury Ion Clock for a NASA Technology Demonstration Mission", by Tjoelker, Prestage, Burt, Chong, Chung, Diener, Ely, Enzer, Mojardi, Okino Pauken, Robinson, Swenson, Tucker, Wang, 2016 https://doi.org/10.1109/TUFFC.2016.2543738 "Next Generation Space Atomic Clock Space Communications and Navigation (SCaN) Technology", by Prestage, 2011 http://scpnt.stanford.edu/pnt/PNT11/2011_presentation_files/19_Prestage-PNT2011.pdf Attila Kinali -- <JaberWorky> The bad part of Zurich is where the degenerates throw DARK chocolate at you. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com and follow the instructions there.
