EU: DECAY_RATE
Status:
STD 2005/06/07
Code:
39
Symbol:
%/min
EQ label:
RATE
Quantities associated with this Unit
Quantity:
decay constant (disintegration constant)
Concept definition:
The relative variation d
N
/
N
of the number
N
of atoms or nuclei in a system, due to spontaneous emission from these atoms or nuclei during an infinitesimal time interval, divided by its duration d
t
[
ISO 80000-3:2006
, item 3-7]. This is equal to (-1/
N
)*(d
N
/d
t
).
1 %/min = 1 / 6 x 10
-3
1/s
(exactly).
Reference type:
PR
Reference:
[
ISO 80000-10:2009
, item 10-26.a]
Supplemental references:
[
ISO 80000-1:2009
, 6.5.4]
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