Bomac BL-693  
Written by Accutron on 2009-05-19  

The Bomac BL-693 is a TR cell doped with the beta emitter Co-60. The initial radioactivity at the time of manufacture was rated at 11.1 kBq, but at the time of this writing has decayed to approximately 10 Bq. The initial Co-60 content of the BL-693 was 0.00000000025g, most of which has now been converted into stable Ni-60.


Bomac BL-693 TR cell.


The BL-693 appears to be filled with water vapor, doped with Co-60 which decreases the ionization threshold.

This article is part of the [Spark Gap Tubes, Trigger Tubes & Passives] exhibit.

©2000-2018 The Vintage Technology Association. All rights reserved.