Register to reply

Relationship between dose rate and amount of radioactive particles

by winnie_t
Tags: dose, particles, radioactive, rate, relationship
Share this thread:
winnie_t
#1
Feb7-13, 11:23 AM
P: 23
Hi,

This might be a silly question but I've been struggling to find this out.

What is the relationship between dose rate and the amount of Cs-137 in an area?

if I know the exposure dose of the area is 5mSv, how can I work out how much Cs-137 is in this area?

Thanks
Phys.Org News Partner Physics news on Phys.org
Vibrational motion of a single molecule measured in real time
Researchers demonstrate ultra low-field nuclear magnetic resonance using Earth's magnetic field
Bubbling down: Discovery suggests surprising uses for common bubbles
mfb
#2
Feb8-13, 03:22 AM
Mentor
P: 11,819
5mSv in what time frame?
In addition, it depends on the location of Cs-137. Is it in the ground, or in the air, or somewhere else? How deep in the ground? ...

For a rough estimate of the activity, you can divide the number of Cs-137-atoms in some volume by the lifetime to get the decays per time and volume. Multiply it with the decay energy to get the released energy per time and volume.
mkarger
#3
Feb12-13, 06:12 PM
P: 64
We would need to know the length of time of exposure, the location of the source from the measurement point and any potential medium that the sourced energy must travel through.


Register to reply

Related Discussions
Does amount of electrons orbiting an atom effect rate of radioactive decay? Chemistry 3
Relationship of absorbed dose (Gray) to cf-252 activity (milicurie/hour) Introductory Physics Homework 0
Dose rate Introductory Physics Homework 1
Radiation Dose Rate! Advanced Physics Homework 3
How does a dose rate meter determine dose with only a GM tool? General Physics 9