Beckman Deuterium lamp

8333 Beckman tube

Window view

Part 8333

Three leads

Bausch and Lomb light source numbers

Bausch & Lomb part numbers, discovered from various sources.

Insert below is a available for download.  I'll update the csv and google docs files as I get a chance to upload them

csv file

google spreadsheet

first column is divisions / mm for gratings.  heading got cut off.

Includes raw gratings, monochromators, light sourcs and power supplies.

English Electric Valve Thyratron, CX1140LD by e2v Technologies

I recently bought a prettier one of these than the one which is in this post from a couple of years ago.

http://jimsoldtoys.blogspot.com/2012_06_01_archive.html

I suspected at the time I got the original that it was probably damaged, and the condition of the newly acquired one would seem to suggest that is the case.

Here is the original tube CX1622:

and here is the "new" one CX1140LD:

The original one has fly leads, but is basically the same tube.


Here is a short spec sheet on the tube:

http://www.alphatrononline.com/images/pdfs/CX1140LD.pdf

The spec sheet shows it runs at 33kv @ 1.25A.  Not static electricity.  It is rated to handle 1000a spikes.

Spec sheet for CX1140 tube

Spec sheet for CX1622 tube

Flyer about e2v technologies Thyatrons

Safety sheet about Thyatrons, showing one of these tubes

Bausch & Lomb Deuterium Source power supply (acts 2 and 3)

Another deuterium source showed up on epay and the seller took my offer.  I had three power supplies and one head, now I have 3 heads!  When it rains it pours.

These are pretty rare, and this is one of the best units for UV monochromatic work that is available.  other deuterium sources are scrounged from UV-VIS devices or AA spectrophotometers which have been broken up.

Of course you can buy one new and pay lots more than this but the newer units are not as nifty as this one.

Lamp with vent stack removed

exit hole, with filter clips

power supply connector

This unit is pristine

English Electric valve thyratron

CX1622S Glass Deuterium Thyatron.  35,000v, 5000A pulses for driving laser tubes or microwave circuits.

These tubes are still used because solid state just doesn't work at these power levels. This is a lower power device.  The real power thyatrons are ceramic and metal container types.

This is a pentode filled with hydrogen gas.  The gas fill allows for quick turnon and turnoff of high current.  In operation this would be the circuit would have a very high magnetic pulsing field (safety warning mentions don't come near it with a pacemaker) and also x-rays.  Out of circuit, don't drop it.

Love large glass objects.

Bausch and Lomb Mercury Arc UV source and monochromator

This is a Bausch and Lomb High Intensity Monochromator with an SP-200 UV Mercury arc source.

Monochromator is catalog # 33-86-75.  Grating has 2700 lines / inch.

Operating, output set to 170nm, flash photo

 Lamp operating full intensity, output set to 300nm

 Output set to 300nm

 Operating full intensity 300nm

 Power supply SP-200

 Power supply SP-200

 Interior of source, showing lamp and choke assembly

Choke / concentrator has quartz optics, two elements

to concentrate beam from Lamp.

 Closer up to Lamp

Lamp envelope.  arc starting electrode is

on opposite side of the envelope.  There is only

the high voltage connected to the top and

bottom.  Other arc starting electrode on

opposite side has no connection, but is

open to air to allow arc at lower starting

voltage (I think)

Bausch & Lomb Deuterium Source power supply

I got the rest of the deuterium source in an auction today.  Now have a functioning source.

This is the head, already covered in an earlier entry

 Supply front.  It has an on off switch and an ammeter to indicate primary high voltage draw.  Deuterium lamps must be started with a heater and a spark, so the trick of these supplies is to kick that w/o damaging the lamp.  The yellow light comes on for about 5 or so seconds to fire the lamp, and the arc stabilizes in about 5 more to the usual "uv" violet glow.

 rear of the display 120v 60hz, 160 watts cat number 33-86-35

 from the top of the source housing

 bottom of the housing type also 33-66-35

 output aperture from supply (operating, but flash and exposure doesn't show uv)

 uv purple, available light shot.

 collimation lens system.  since it is UV, must be quartz optics

Next stop, collect the monochromator from stash and test out the thing.  Unfortunately, I don't know how far down my Ocean Optics spectrograph goes.

Bausch & Lomb Monochomater Deuterium UV Lamp source

This provides an alternate source for the UV monochromator head.  There is also a UV source which is a Mercury lamp powered unit.

I now have all three of the optical units, several of the Tungsten lamps, and this lamp unit.  Now to find out if it will work with any of my power supplies.  I do have a source with P/S which has both a mercury lamp and a deuterium lamp, but it is not B & L.  Also it does not have a power supply for the mercury lamp.

The apples were tasty too.