A1 capsule type
Beta Particle Standards - Type A1
The active material is uniformly distributed over the surface of a 0.937” (23.8 mm) diameter foil and sealed in an aluminum mounting ring under a 0.9 mg/cm2 aluminized Mylar window for most nuclides. The active diameter of the source is 0.805” (20.4 mm). Special absorbers may be included under the window to filter undesirable low energy radiation. This configuration is most useful for determining efficiencies of G.M. and windowless counters used for beta assaying evaporated liquid samples. The overall source diameter is 1” (25.4 mm) and 0.125” (3.18 mm) thick.
Overall Diameter | Active Diameter | Height |
1” | 0.805” | 0.125” |
25.4 mm | 20.4 mm | 3.18 mm |
Nature of Active Deposite | Available Activities |
Evaporated Salts on 0.010” Stainless Steel | 5 nCi -100 nCi (185 Bq - 3.7 kBq) |
Exceptions |
Bi-210: 10 nCi - 100 nCi (370 Bq - 3.7 kBq) |
Nuclide | Product code | Activity range | Remarks |
Bi-210 | BF-210-A | 370 Bq - 37 kBq | Pb-210 parent |
C-14 | BF-014-A | 370 Bq - 37 kBq |
|
Cl-36 | BF-036-A | 370 Bq - 37 kBq |
|
Co-60 | BF-060-A | 370 Bq - 37 kBq |
|
Cs-137 | BF-137-A | 370 Bq - 37 kBq |
|
Ge-681) | BF-068-A | 370 Bq - 37 kBq | On Request |
Na-22 | BF-022-A | 370 Bq - 37 kBq |
|
Pm-147 | BF-147-A | 370 Bq - 37 kBq |
|
Ru-106/Rh-106 | BF-106-A | 370 Bq - 37 kBq |
|
Si-32/P-322) | BF-032-A | 370 Bq - 1,85 kBq |
|
Sn-113 | BF-113-A | 370 Bq - 37 kBq | on platinum foil only |
Sr-90/Y-903) | BF-090-A | 370Bq |
|
Sr-90/Y-903) |
| 1,85 kBq - 18,5 kBq |
|
Tc-99 | BF-099-A | 370Bq - 37 kBq |
|
Tl-204 | BF-204-A | 370Bq - 37 kBq |
|
