Can someone please explain the difference between these two terms (Zero Background Radiation and Field Background Radiation) used in radiometric prospecting measurements?
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$\begingroup$ Do you mean Cosmic Microwave Background Radiation? $\endgroup$– BenichiwaCommented Apr 14, 2015 at 23:09
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2$\begingroup$ Can you link to texts which use these terms in the manner you're thinking of? $\endgroup$– rob ♦Commented Apr 15, 2015 at 8:43
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In the abstract of this article Measurements of environmental background radiation at location of coal-fired power plants (PubMed, 2004) the terms are used in context.
"Zero background radiation" - is the natural expected radiation measured far away of the specific pollutant site - the coal mine. It is a control or reference value in the study.
"Background radiation field" is the effective ambient radiation
Record radiation levels were found in a house where the effective dose due to ambient radiation fields was 131 mSv/a,
in the same abstract:
This investigation has been primarily done in order to check the impact of coal-fired power plants on the background radiation level in its vicinity
