Results 1 to 3 of 3

Thread: Custom made low-pressure mercury lamps

  1. #1
    Join Date
    Nov 2017
    Location
    Odessa, Ukraine
    Posts
    92

    Default Custom made low-pressure mercury lamps

    Here I want to offer for sale some custom made mercury discharge lamps, that had been made by my fellow glassblower. They are listed on e-bay here: https://www.ebay.com/itm/113285551425 Price is 15$ for each, 9 lamps available. Ypu will save a lot on shipping if you buy at least 2-3 of them.



    Dimensions 200mm length, 15mm dia,
    Operating voltage 1200-1500V DC
    Operating current 1-2 mA DC.
    Envelope material: Soda lime glass.
    Expected lifetime -- 1000 hours or more.
    The output spectrum is VISIBLE ONLY. No UV light, it is blocked by the envelope.




    The lamp can be used as a source of calibration spectrum with narrow line width for calibrating spectrometers, testing and control of optical surfaces quality or any other purpose where a source of visible mercury spectrum is needed. The best way to power it is to use a line voltage multiplier with a ballasting resistor.
    Note, that the starting voltage is at least 1.5-2 times higher than operating voltage.

    Last edited by Laserbuilder; 11-26-2018 at 06:42.

  2. #2
    Join Date
    May 2017
    Posts
    22

    Default

    Just curious -- how narrow is the linewidth, compared to say low pressure sodium vapor?

  3. #3
    Join Date
    Nov 2017
    Location
    Odessa, Ukraine
    Posts
    92

    Default

    The linewidth depends on operating current and it is narrower at smaller currents. The best result that was obtained is about a fraction of 1 nm. The coherence length for a selected line could achieve 1 mm value.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •