Corby I agree that it makes sense. Its interesting how the thread has destabilized into something about radioactivity, the real thread, and lastly optically pumped RB/CS references. The last two for me are of interest. I suppose if I wanted to debate RB I could go to wikipedia or something.
So following your line of reasoning in pulling the cell and then the only nasty thing is getting the correct laser, and I fear the most expensive part some optics. Of course that last lines full of traps actually. My actual real effort quite soon will be following Magnus's suggestion on an old funky telco Rb. Need to get a heat gun however. But I really do seem to recall when I had it apart I saw the stuff on the glass envelope as he described. So for me thats the first attempt at any real work. The other thing that effects the reference is the tuning cap on the oscillator. Its quite touchy and even though originally high quality it does need to be replaced. Regards Paul WB8TSL On Sat, Jan 15, 2011 at 2:16 AM, <[email protected]> wrote: > The RB-87 isotope used in Rubidium standards is radioactive, but at such > a slight activity level that special procedures and shielding must be > used to measure it. Any chunk of granite, including your fancy kitchen > counters, far "outshines" RB-87 as a radiation source! A garage built > Rubidium standard would be quite feasible. The hardest parts would be the > glassblowing and Rubidium filling, along with the requisite vacuum system > and buffer gas filling. Seems it would be easier to pull the cells and > lamp from some duds and start from there! The cells never wear out. > > Corby Dawson > ____________________________________________________________ > Home Refinance 3.8% FIXED > No Hidden Fees, Easy Approvals & Better Terms-Free Quotes-3.9% APR! > http://thirdpartyoffers.juno.com/TGL3141/4d3149f3fc21b1746fst04duc > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
