## How do you convert Curie to DPM?

Curie or Ci – the most common unit of measure for the radioactivity of a substance. 1 Ci = 3.7×1010 disintegrations per second = 2.22×1012 disintegrations per minute (dpm). The term is most often used as a microCurie (µCi).

### How many DPM is a Curie?

2.22 X 1012 dpm
Definition: A Curie is the unit of absolute activity and is abbreviated Ci. It is expressed in terms of disintegrations per second (dps). A Curie is represented by a sample with a decay rate of 3.7 X 1010 dps or 2.22 X 1012 dpm.

#### How many DPM is a BQ?

Bq↔dpm 1 Bq = 60 dpm.

How many DPM is a microCurie?

2,220,000 dpm
Common fractions of the curie are the millicurie (1 mCi = 1/1,000 Ci) and the microcurie (1 μCi = 1/1,000,000 Ci). In terms of disintegrations per unit time, 1 μCi = 2,220,000 dpm.

What is the difference between CPM and DPM?

The difference between counts per minute (CPM) and disintegrations per minute (DPM) lies in efficiency. Whereas DPM merely measures the number of atoms that decay in one minute given a select amount of radioactive material, CPM provides for the exact quantity of those atoms that have actually decayed.

## How is curie calculated?

Calculate the value in curies by dividing the decay rate per second by 3.7 x 10^10, the decay rate equal to 1 curie. For example, 1 gram of Cobalt-60 is equivalent to 1,119 curies because 4.141 x 10^13/ 3.7 x 10^10 = 1,119 Ci.

### How is activity calculated in curies?

The rate of decay is often referred to as the activity of the isotope and is often measured in Curies (Ci), one curie = 3.700 x 1010 atoms that decay/second. By knowing the amount of radioisotope and the activity of the sample, the rate constant can be determined.

#### How many becquerels are in a Curie?

37 billion Bq
Guidance for Radiation Accident Management A becquerel is one decay per second (dps). The curie (Ci) is the traditional unit of radioactivity and is the unit most commonly used in the United States. One curie is 37 billion Bq.