Disintegration per minute (dpm)
One decay per minute: 1/60 Bq. Used for surface contamination and wipe tests.
What is a disintegration per minute?
- Symbol
- dpm
- Quantity
- Radioactivity
- Unit system
- other
- Definition
- One decay per minute: 1/60 Bq. Used for surface contamination and wipe tests.
- Exact
- Yes, the value is exact by definition
- Source
- SI Brochure, 9th edition (BIPM, 2019)
Common applications
Used for wipe tests and surface contamination surveys, and for counts from liquid scintillation counters.
Disintegration per minute in other radioactivity units
- 1 dpm ≈ 0.01666666667 BqBecquerel
- 1 dpm ≈ 0.00001666666667 kBqKilobecquerel
- 1 dpm ≈ 1.666666667e-8 MBqMegabecquerel
- 1 dpm ≈ 1.666666667e-11 GBqGigabecquerel
- 1 dpm ≈ 1.666666667e-14 TBqTerabecquerel
- 1 dpm ≈ 4.504504505e-13 CiCurie
- 1 dpm ≈ 4.504504505e-10 mCiMillicurie
- 1 dpm ≈ 4.504504505e-7 µCiMicrocurie
- 1 dpm ≈ 0.4504504505 pCiPicocurie
- 1 dpm ≈ 1.666666667e-8 RdRutherford
Disintegration per minute quick reference
| Disintegration per minute | Gigabecquerel | Curie | Becquerel |
|---|---|---|---|
| 1 dpm | ≈ 1.666666667e-11 GBq | ≈ 4.504504505e-13 Ci | ≈ 0.01666666667 Bq |
| 10 dpm | ≈ 1.666666667e-10 GBq | ≈ 4.504504505e-12 Ci | ≈ 0.1666666667 Bq |
| 100 dpm | ≈ 1.666666667e-9 GBq | ≈ 4.504504505e-11 Ci | ≈ 1.666666667 Bq |
| 1000 dpm | ≈ 1.666666667e-8 GBq | ≈ 4.504504505e-10 Ci | ≈ 16.66666667 Bq |
Where the disintegration per minute fits
The next larger radioactivity unit is the picocurie (pCi). 1 dpm ≈ 0.4504504505 pCi, and 1 pCi = 2.22 dpm.
Frequently asked questions
- How many gigabecquerels are in one disintegration per minute?
- One disintegration per minute ≈ 1.666666667e-11 GBq (gigabecquerels).
- How many curies are in one disintegration per minute?
- One disintegration per minute ≈ 4.504504505e-13 Ci (curies).
- How many becquerels are in one disintegration per minute?
- One disintegration per minute ≈ 0.01666666667 Bq (becquerels).