I would also be interested in a few, I have 2 5061's with probably bad tubes and would take the chance... Shawn On Sat, 2011-01-15 at 12:25 -0500, wa1zms@att.net wrote: > Greg- > > I, for one would be very willing to take a chance on one or two tubes > and see if there is any life left in them, but sadly I live in Va. > > I have e-mailed a friend in Boulder to see if he ever heads out in > your direction but I don't think he does very often. > > Please keep me in mind if you uncover a way to address the shipping > issue or if another steps up to buy the lot, as I would be willing to > contact them as well. > > Regards, > -Brian Justin, WA1ZMS > Forest, VA > > > On Jan 15, 2011, at 8:07 AM, "gbusg" <gbusg@comcast.net> wrote: > > > Regarding the various discussions regarding CS reservoir depletion... > > > > I should probably mention that I'm helping the family of my friend, > > the late > > Chuck Norton (who owned Frequency Standards and Services in Colorado > > Springs) with their sale of the equipment Chuck had in his lab and > > inventory. We've been selling the more "generic" equipment on eBay, > > but > > holding some of the time & freq. stuff for now in case time-nuts > > folks want > > some of it. > > > > There's a large qty of used (mostly HP) Cesium Beam Tubes. I didn't > > count > > them yet, but going by memory I'd say there might be 10 or 15 of them. > > Probably mostly for the HP 5060A and HP 5061A. > > > > If anybody's interested, I can inventory the exact part numbers of > > those > > tubes for you. Keep in mind they're all used tubes in unknown > > condition. So > > we must assume they don't work. Probably they can be had for a very > > low, > > reasonable price - but the family says that, due to the DOT-SP11401 > > paperwork & complications when shipping cesium beam tubes, they > > would prefer > > local pickup (in Colorado Springs) on the tubes. So that might make it > > difficult - unless someone will be passing through Colorado Springs, > > or they > > have suggestions on how to easily ship the tubes? > > > > Contact me off list if for further information. > > > > My best, > > Greg > > > > > > P.S. There are also quite a few HP 5061A and other similar time & > > frequency > > pieces (e.g., several HP 5087A, etc.). I've not yet tested any of > > that > > stuff, so don't know the condition. Probably at least his main > > cesium beam > > standard (that was part of his NIST time & frequency service system) > > works > > well. > > > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there.

On 01/15/2011 11:20 AM, Jean-Louis Noel wrote: > Hi Robert, > > From: "Robert Vassar" <rvassar@rob-vassar.com> > >> You could probably safely handle a small quantity of Rb in a home lab >> environment for a short period of time. Pure Cesium would be a >> significant risk. > > As you can see on page 28 vials remains untouched till everythings are > in place > and else broken. > > http://jila01.colorado.edu/pubs/thesis/bennett/ch3.pdf > For a vial of cesium check ebay 280612515679 No, do read at page 27 first. There is some handling in a glove-box filled with argon and movement from that one before final assembly etc. Doable, but not quite the same thing as you described. There is patents for CBT solutions where the ampule is broken when placed in the CBT, complete with metal cages to handle the ballistics of glass splinters. Doing it once is one thing. Doing it several times is another. A home-made tube is bound to have an experimental touch to it. So the caesium oven needs to be isolated when experimenter tinkers around. In comparison a rubidium setup seems much safer as it is sealed up in its glass-ware for the rest of the device life unless you are very clumsy. Cheers, Magnus

Hi Magnus, From: "Magnus Danielson" <magnus@rubidium.dyndns.org> >> As you can see on page 28 vials remains untouched till everythings are >> in place >> and else broken. > > No, do read at page 27 first. There is some handling in a glove-box filled > with argon and movement from that one before final assembly etc. Yes, but I think you can find a solution to break the vials when everything is in place. Safer! Bye, Jean-Louis

On 01/16/2011 04:38 PM, Jean-Louis Noel wrote: > Hi Magnus, > > From: "Magnus Danielson" <magnus@rubidium.dyndns.org> > >>> As you can see on page 28 vials remains untouched till everythings are >>> in place >>> and else broken. >> >> No, do read at page 27 first. There is some handling in a glove-box >> filled with argon and movement from that one before final assembly etc. > > Yes, but I think you can find a solution to break the vials when > everything is in place. > Safer! You can, but that description was not the best inspiration. I'll have to dig my archive to find a better example. But honestly, this would only be one tiny details out of many. Cheers, Magnus

The vials are commonly broken in vaccuo with a magnet and steel plunger. -John =========== > Hi Magnus, > > From: "Magnus Danielson" <magnus@rubidium.dyndns.org> > >>> As you can see on page 28 vials remains untouched till everythings are >>> in place >>> and else broken. >> >> No, do read at page 27 first. There is some handling in a glove-box >> filled >> with argon and movement from that one before final assembly etc. > > Yes, but I think you can find a solution to break the vials when > everything > is in place. > Safer! > > Bye, > Jean-Louis > > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

What interested me was the beam collimator. I'd thought the beam would be collimated and small diameter like a LASER, but the setup clearly is to produve a beam of Cs maybe 1 to 1.5 inches in diameter. -John ============= > On 01/16/2011 04:38 PM, Jean-Louis Noel wrote: >> Hi Magnus, >> >> From: "Magnus Danielson" <magnus@rubidium.dyndns.org> >> >>>> As you can see on page 28 vials remains untouched till everythings are >>>> in place >>>> and else broken. >>> >>> No, do read at page 27 first. There is some handling in a glove-box >>> filled with argon and movement from that one before final assembly etc. >> >> Yes, but I think you can find a solution to break the vials when >> everything is in place. >> Safer! > > You can, but that description was not the best inspiration. > > I'll have to dig my archive to find a better example. > > But honestly, this would only be one tiny details out of many. > > Cheers, > Magnus > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > >

1 OR 1.5 INCHES IS ONLY ONE OF THE DIMENSIONS. THE OTHER ONE IS SMALLER, AND THE BEAM IS NOT CIRCULAR ( OR NOT CONICAL). At 17:44 16.1.2011, you wrote: >What interested me was the beam collimator. I'd thought the beam would be >collimated and small diameter like a LASER, but the setup clearly is to >produve a beam of Cs maybe 1 to 1.5 inches in diameter. > >-John > >============= > > > > > On 01/16/2011 04:38 PM, Jean-Louis Noel wrote: > >> Hi Magnus, > >> > >> From: "Magnus Danielson" <magnus@rubidium.dyndns.org> > >> > >>>> As you can see on page 28 vials remains untouched till everythings are > >>>> in place > >>>> and else broken. > >>> > >>> No, do read at page 27 first. There is some handling in a glove-box > >>> filled with argon and movement from that one before final assembly etc. > >> > >> Yes, but I think you can find a solution to break the vials when > >> everything is in place. > >> Safer! > > > > You can, but that description was not the best inspiration. > > > > I'll have to dig my archive to find a better example. > > > > But honestly, this would only be one tiny details out of many. > > > > Cheers, > > Magnus > > > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > > > > >_______________________________________________ >time-nuts mailing list -- time-nuts@febo.com >To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >and follow the instructions there.