Study of the continuous internal bremsstrahlung spectrum from (204)Tl by using singular value decomposition

Ekrem Almaz

doi:10.1016/j.apradiso.2015.01.024

Study of the continuous internal bremsstrahlung spectrum from (204)Tl by using singular value decomposition

Appl Radiat Isot. 2015 May:99:35-40. doi: 10.1016/j.apradiso.2015.01.024. Epub 2015 Jan 22.

Author

Ekrem Almaz¹

Affiliation

¹ Arts & Science Faculty, Physics Department, Mus Alparslan University, Mus 49100, Turkey. Electronic address: e.almaz@alparslan.edu.tr.

PMID: 25699666
DOI: 10.1016/j.apradiso.2015.01.024

Abstract

Internal bremsstrahlung (IB) accompanying the β(-) decay of (204)Tl was measured using a 5.08×5.08cm(2) NaI(Tl) detector employing a magnetic deflection method in the range of 10-760keV. A novel approach, the Singular Value Decomposition (SVD), is applied to unfold the raw detector spectrum of (204)Tl. Unfolded IB spectrum is compared with the KUB theory. The measured spectrum is found to show fairly good agreement with the KUB theory in the energy range of 100-600keV. The distribution beyond the 600keV takes a positive deviation from the theory.

Keywords: Detector response function; Internal bremsstrahlung; NaI(Tl) detector; Singular Value Decomposition; Unfolding.