A highly efficient alpha, beta, gamma-spectrometer with low background

Author

Nagornaya, L.L. ; Zelenskaya, O.V. ; Budakovsky, S.V. ; Chichikalyuk, Yu.A.

Author_Institution

Inst. for Single Crystals, Kharkov, Ukraine

Volume

43

Issue

3

fYear

1996

fDate

6/1/1996 12:00:00 AM

Firstpage

1284

Lastpage

1286

Abstract

A highly efficient low-background spectrometer based on phoswich detector design and characteristics are described. The spectrometer allows measurements in a broad energy range of alpha-, beta- and gamma-radiation emitted from the natural radionuclides to be carried out. The phoswich detector consists of a fast scintillator based on the doped p-terphenyl single crystal and a slow CWO scintillator. Separate detection of each type of radiation is made possible by means of signal discrimination over the pulse shape. The minimum detectable activity of ⁹⁰Sr+⁹⁰Y equal to 1 Bq was achieved. Advantages of the proposed spectrometer are discussed, and quantitative data on the minimum detectable activities for each type of radiation are presented

Keywords

alpha-particle detection; beta-ray detection; gamma-ray detection; solid scintillation detectors; ⁹⁰Sr; ⁹⁰Y; alpha-radiation; alpha-spectrometer; beta-radiation; beta-spectrometer; doped p-terphenyl single crystal; fast scintillator; gamma-radiation; gamma-spectrometer; low-background spectrometer; minimum detectable activities; minimum detectable activity; natural radionuclides; phoswich detector; pulse shape; signal discrimination; slow CWO scintillator; Atomic measurements; Crystals; Gamma ray detection; Gamma ray detectors; Photomultipliers; Pulse shaping methods; Radiation detectors; Shape; Solid scintillation detectors; Spectroscopy;

fLanguage

English

Journal_Title

Nuclear Science, IEEE Transactions on

Publisher

ieee

ISSN

0018-9499

Type

jour

DOI

10.1109/23.506679

Filename

506679