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dc.contributor.authorWilliams, Peter C
dc.date.accessioned2011-07-04T11:27:44Z
dc.date.available2011-07-04T11:27:44Z
dc.date.issued1980-01
dc.identifier.citationThe experimental determination of C lambda using an absorbed dose calorimeter. 1980, 25 (1):77-84 Phys Med Biolen
dc.identifier.issn0031-9155
dc.identifier.pmid7360794
dc.identifier.doi10.1088/0031-9155/25/1/007
dc.identifier.urihttp://hdl.handle.net/10541/135242
dc.description.abstractThe absorbed dose conversion factors, C lambda, were introduced, by Greene and Massey, as an interim measure until a primary standard for high energy photon dosimetry could be established. The theoretical basis of these factors has been discussed extensively and a more rigorous definition has emerged. Experiments have been carried out to determine the values of C lambda, for a Tufnol walled, Baldwin-Farmer ionisation chamber over a range of energies from cobalt-60 to 12 MV. The experimental results, based on measurements with a calorimeter, presented here support the more rigorous definition but it is shown that the values obtained depend, to a small extent, on the assumptions made about the detailed construction of the ionisation chamber for which C lambda is measured.
dc.language.isoenen
dc.subject.meshCalorimetry
dc.subject.meshRadiation Dosage
dc.subject.meshRadiometry
dc.subject.meshWeights and Measures
dc.titleThe experimental determination of C lambda using an absorbed dose calorimeter.en
dc.typeArticleen
dc.contributor.departmentRegional Dept. of Medical Phys. & Bioengng., Christie Hospital, Manchester, UKen
dc.identifier.journalPhysics in Medicine and Biologyen
html.description.abstractThe absorbed dose conversion factors, C lambda, were introduced, by Greene and Massey, as an interim measure until a primary standard for high energy photon dosimetry could be established. The theoretical basis of these factors has been discussed extensively and a more rigorous definition has emerged. Experiments have been carried out to determine the values of C lambda, for a Tufnol walled, Baldwin-Farmer ionisation chamber over a range of energies from cobalt-60 to 12 MV. The experimental results, based on measurements with a calorimeter, presented here support the more rigorous definition but it is shown that the values obtained depend, to a small extent, on the assumptions made about the detailed construction of the ionisation chamber for which C lambda is measured.


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