CHARACTERIZATION OF MASS ATTENUATION COEFFICIENTS AS A FUNCTION OF EXPERIMENTAL GEOMETRY

Küçük Resim Yok

Tarih

2015

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

Taylor & Francis Inc

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Özet

Mass attenuation coefficients of H2O, PbO, and cellulose were determined using 59.5keV gamma energies with CdTe and NaI (Tl) detectors at five different source-sample distances. The pencil beam method was used to measure the mass attenuation coefficients. All experimental mass attenuation coefficients were compared with simulated results. A linear relationship between source-sample distance and mass attenuation coefficients was determined by regression analysis. The correlation coefficients were 0.99, 0.96, and 0.98 for cellulose, H2O, and PbO using a NaI (Tl) detector, while the values were 0.98, 0.99, and 0.99 with the Cd(Te) detector. If the beams were emitted as a narrow beam instead of as a pencil beam, a constant relationship instead of a linear increase was observed for the mass attenuation coefficients as a function of distance. Consequently, the narrow beam method was superior to the pencil beam approach.

Açıklama

Anahtar Kelimeler

Americium, gamma ray spectroscopy, mass attenuation coefficients

Kaynak

Instrumentation Science & Technology

WoS Q Değeri

Q4

Scopus Q Değeri

Q3

Cilt

43

Sayı

6

Künye