Counts per minute

Geiger-Müller counter with dual counts/dose rate display measuring a

Graphic showing relationships between radioactivity and detected ionizing radiation

Hand-held large area alpha scintillation probe under calibration using a plate source in close proximity to the detector.

The measurement of ionizing radiation is sometimes expressed as being a rate of counts per unit time registered by a radiation monitoring instrument, of which counts per minute (cpm) and counts per second (cps) are commonly used. Count rate measurements are normally associated with the detection of particles, such as alpha particles and beta particles. However, for gamma ray and X-ray dose measurements a unit such as the sievert is normally used.

单词	D.p.m
释义	D.p.m 英语百科 Counts per minute The measurement of ionizing radiation is sometimes expressed as being a rate of counts per unit time registered by a radiation monitoring instrument, of which counts per minute (cpm) and counts per second (cps) are commonly used. Count rate measurements are normally associated with the detection of particles, such as alpha particles and beta particles. However, for gamma ray and X-ray dose measurements a unit such as the sievert is normally used.
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D.p.m

Counts per minute