"P" numbers (phosphors)

This area is for discussions involving any fusion related radiation metrology issues. Neutrons are the key signature of fusion, but other radiations are of interest to the amateur fusioneer as well.
Post Reply
User avatar
Richard Hull
Moderator
Posts: 15037
Joined: Fri Jun 15, 2001 9:44 am
Real name: Richard Hull

"P" numbers (phosphors)

Post by Richard Hull »

Well, here is a taste of data on the official "P" designations for phosphors

P-1 ZnS-2Si04: Mn color - green, persistance - medium
P-2 ZnS: Cu color - blue green, persistance - long
P-4 ZnS: Ag color - white/blue white, persistance - medium-short.

There are many more, of course.

reference: Handbook of Electron Tube and Vacuum Techniques, Rosebury, F., pg 254.

The above supplied by my pal and cohort here in our local physics study group, Major Tim Raney, US Army.

Richard Hull

Update***

All those listed above are both luminescent and phosphorescent.

Luminescent refers to emitting light when excited by an outside source of energy.

Phosphorescence refers to continued light emission after the removal of excitation. Persistance refers to the length of the phosphorescent phase.

See vol 22 of the Rad Lab series. Cathode Ray Tubes and Displays. Mcgraw Hill, 1948

RH
Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
The more complex the idea put forward by the poor amateur, the more likely it will never see embodiment
Top
Post Reply

Return to “Neutrons, Radiation, and Detection (& FAQs)”