[time-nuts] LPRO questions...

Magnus Danielson magnus at rubidium.dyndns.org
Fri Sep 6 06:59:11 UTC 2013


Hi Alan,

I used a fairly crude heat gun, and I looked at the lamp and was able to
see when it had cleared since I had evaporated the rubidium from the
glas. But it was not extreme heat (it's a small heat-gun anyway) or
particular long time. I had to redo it and re-think it to figure out how
to get the metal to deposit where I wanted, and what worked for me was
to let the deposit area be high up, but it could just be that this was
the part with most cooling, so it could have dominated.

Cheers,
Magnus

On 09/06/2013 12:53 AM, Alan Kamrowski II wrote:
> Hi Magnus,
>
> Interesting.  What temperature C do you use and for how long?
>
> Thanks,
>
> Alan
>  
>
> -----Original Message-----
> From: time-nuts-bounces at febo.com [mailto:time-nuts-bounces at febo.com] On
> Behalf Of Magnus Danielson
> Sent: Thursday, September 05, 2013 4:24 PM
> To: time-nuts at febo.com
> Subject: Re: [time-nuts] LPRO questions...
>
> On 09/05/2013 10:45 PM, Alan Kamrowski II wrote:
>> Hi Bill,
>>
>> Where is the dimple?  The bulb end looked circular and smooth?  Do you 
>> mean the other end (back end which is visible even when the bulb is
> installed)?
>> The bulb end points towards the entire assembly...
> The back end as mounted is where you want it to deposit. When I did it, it
> turned out that I better put the "window" side downwards so that when the
> vapor rose as it was hot, it hit the cooler side above it and settled there,
> that's how I reduced the shadowing on the window to clear. The reason it's a
> bad thing is that this thin coating will absorb exactly that wavelength you
> try to output.
>
> Cheers,
> Magnus
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