Experiment 27 - Mylar window

 Cell:

• Cathode:  2 cm of exposed 0.25mm Ag wire as close as possible to Mylar window
  • window: 1.5 cm x 1.5 cm hole machined in side of cell with Mylar window glued over it (with Devcon clear epoxy)
  • 1 cm x 1 cm Landauer CR-39 chip on the outside of the Mylar
• Anode:  Approximately 5 cm of 0.5 mm Pt wire with Pt screen spot welded on end  
• without magnets
• a "witness" piece of CR-39 was taped to the the outside of the cell (away from the cathode)

 Electrolyte:

• 27.5 gm H2O + 0.647 gm LiSO4·H2O
• 0.022 gm of LiSO4 per cc of light water (Richard Oriani's recipe)

 Procedure:  

• 105 mA for 3 days (as close as we could get to Oriani's settings)

Etch:

• 6 hrs in 6.5M NaOH at 68C

Results (Started on 2.6.07 Ended on 2.24.07):

• No significant tracks
• side facing cathode:  74  /cm^2
• side facing away: 224    /cm^2
• witness piece facing cell:  78  /cm^2
• witness piece facing away:  68  /cm^2