PALSRaM: A three-detector positron annihilation lifetime spectrometer for γ-emitting radioactive materials

被引：3
作者：
Bes R. [1 ,2 ]
Vancraeyenest A. [3 ,4 ]
机构：
[1] Department of Physics, University of Helsinki, P.O. Box 64, Helsinki
[2] Helsinki Institute of Physics, University of Helsinki, P.O. Box 64, Helsinki
[3] Department of Applied Physics, Aalto University, P.O. Box 14100, Aalto
[4] Helsinki Institute of Physics, Aalto University, P.O. Box 14100, Aalto
来源：
Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2023年 / 1052卷
关键词：
Positron Annihilation Lifetime Spectroscopy; Triple-coincidence;
D O I：
10.1016/j.nima.2023.168265
中图分类号：
学科分类号：
摘要：
A three detector positron annihilation lifetime spectrometer for γ-emitting radioactive materials has been constructed and successfully tested. The equipment operates in triple-coincidence mode in order to reject the false coincidence due to the radioactive background generated when dealing with radioactive samples. The spectrometer has been optimized and tested by comparison of the results of well-known material with and without high background radiation. The time resolution of 155 ps is achieved. This paper reports on the design, stability and performance of this new spectrometer. © 2023 The Author(s)
引用
收藏
相关论文
共 12 条
  • [1] Tuomisto F., Makkonen I., Defect identification in semiconductors with positron annihilation: Experiment and theory, Rev. Modern Phys., 85, pp. 1583-1631, (2013)
  • [2] Cizek J., Characterization of lattice defects in metallic materials by positron annihilation spectroscopy: A review, J. Mater. Sci. Technol., 34, 4, pp. 577-598, (2018)
  • [3] Basunia M.S., Nuclear data sheets for A=22, Nucl. Data Sheets, 127, pp. 69-190, (2015)
  • [4] Heikinheimo J., Bes R., Tuomisto F., (2016)
  • [5] Van Hoorebeke L., Fabry A., van Walle E., Van de Velde J., Segers D., Dorikens-Vanpraet L., A three-detector positron lifetime setup suited for measurements on irradiated steels, Nucl. Instrum. Methods Phys. Res. A, 371, 3, pp. 566-571, (1996)
  • [6] Cizek J., Becvar F., Prochazka I., Three-detector setup for positron-lifetime spectroscopy of solids containing 60Co radionuclide, Nucl. Instrum. Methods Phys. Res. A, 450, 2, pp. 325-337, (2000)
  • [7] Saito H., Nagashima Y., Kurihara T., Hyodo T., A new positron lifetime spectrometer using a fast digital oscilloscope and BaF2 scintillators, Nucl. Instrum. Methods Phys. Res. A, 487, 3, pp. 612-617, (2002)
  • [8] Jardin M., Lambrecht M., Rempel A., Nagai Y., van Walle E., Almazouzi A., Digital positron lifetime spectrometer for measurements of radioactive materials, Nucl. Instrum. Methods Phys. Res. A, 568, 2, pp. 716-722, (2006)
  • [9] Vancraeyenest A., Pals3D - A Data Acquisition Software for Positron Annihilation Lifetime Spectroscopy, (2019)
  • [10] Vancraeyenest A., Pals3D documentation, (2019)
12