caa a22 4500 397501714 CHVBK 20180308164534.0 cr unu---uuuuu 161202e19950201xx s 000 0 eng 10.1093/oxfordjournals.rpd.a082618 doi 0144-8420 pii (NATIONALLICENCE)oxford-10.1093/oxfordjournals.rpd.a082618 HPGe Spectrometer as a Gamma Ray Dosemeter In Situ [Elektronische Daten] [S. Krnác, P. Ragan] A new gamma ray dosemeter utilising in situ gamma spectrometric measurements by a HPGe spectrometer is described. The spectrometric method for calculation of the real incident gamma ray spectrum is based on factorisation of the response operator. A set of common factors has been used that result from fundamental photon interactions with matter. The scaling and loading coefficients for the common factors have been estimated by a confirmatory least squares technique of factor analysis that makes it possible to create a response function in the response operator for an arbitrary energy of the measured range up to 1.8 MeV. Performance of radial and angular calibrations of the spectrometer yield certain conditions in regard to in situ applications. For the case of an unknown angular distribution of gamma sources, a correction according to the Dewar flask shielding must be carried out. The correction method, which is discussed in detail, allows one to estimate the angular distribution of sources by a set of measurements using a HPGe detector rotated around the effective centre of the detector to different directions. The real incident fluence rate spectra obtained may be employed in the determination of basic dosimetric characteristics such as spectral exposure and dose rates. Comparison of the calculated and the measured values is presented for a modelling distribution of point gamma sources. Radiation Protection Dosimetry Krnác S. aut Ragan P. aut Radiation Protection Dosimetry Oxford University Press 58/3(1995-02-01), 217-228 0144-8420 58:3<217 1995 58 rpd https://doi.org/10.1093/oxfordjournals.rpd.a082618 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1093/oxfordjournals.rpd.a082618 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Krnác S. aut NATIONALLICENCE 700 1- Ragan P. aut NATIONALLICENCE 773 0- Radiation Protection Dosimetry Oxford University Press 58/3(1995-02-01), 217-228 0144-8420 58:3<217 1995 58 rpd Metadata rights reserved CC BY-NC-4.0 http://creativecommons.org/licenses/by-nc/4.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-oxford