ISSN:
1572-9486
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract In this paper the results of calorimetric measurements of the correlation factor erg/cm2 R for filtered and unfiltered X-radiation in the energy region up to 220 keV are given. The value of the correlation factor for X-radiation filtered by 3 mm Cu measured by a calorimeter is compared with the values of the correlation factor calculated by an independent method from the energy spectra of the same radiation. The initial spectra are obtained by means of a numerical graphical method from transmission curves measured by means of an ionization chamber in copper and tin. This comparison has shown very good agreement between the calorimetric value of the correlation factor 3·-45. 103 erg/cm2 R and those calculated by using White's values of the correlation factor depending on the X-radiation energy, provided the average energy required to produce an ion pair in air is 34·0 eV. The experimental results thus obtained enable us also to evaluate the amount of average effective energy of the measured X-radiation which is equivalent to the energy of monochromatic X-radiation having the same correlation factor, in comparison with the effective energy, currently determined by ionization measurements of the half-value layers.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01691353
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