Nonproportional response of LaBr3:Ce and LaCl3:Ce scintillators to synchrotron x-ray irradiation

Title

Nonproportional response of LaBr3:Ce and LaCl3:Ce scintillators to synchrotron x-ray irradiation

 Author

Khodyuk, I.V.
Dorenbos, P.

Faculty

Applied Sciences

 Department

Luminescence Materials Research Group

 Date

2010-11-17

 Abstract

The nonproportional scintillation response of LaBr3 doped with 5% Ce3+ and of LaCl3 doped with 10% Ce3+ was measured using highly monochromatic synchrotron irradiation. To estimate the photon response, pulse height spectra at many finely spaced energy values between 9 and 100 keV were measured. The experiment was carried out at the X-1 beamline at the Hamburger Synhrotronstrahlungslabor (HASYLAB) synchrotron radiation facility in Hamburg, Germany. Special attention was paid to the x-ray fluorescence escape peaks as they provide us with additional information about photon response in the range 1.2–14.5 keV for LaBr3:Ce and 2.0–11.6 keV for LaCl3:Ce. A rapid variation of the photon response curve is observed near the lanthanum K-electron binding energy for both scintillators. A dense sampling of data was performed around this energy and those data are used to apply a method, which we call K-dip spectroscopy. This method allows us to derive the electron response curves of LaBr3:Ce and LaCl3:Ce down to energies as low as 0.1 keV.

 To reference this document use:

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 DOI

https://doi.org/10.1088/0953-8984/22/48/485402

 Publisher

Institute of Physics

 ISSN

0953-8984

 Source

http://iopscience.iop.org/0953-8984/22/48/485402/

 Source

Journal of physics. Condensed matter, 22 (48) 2010

 Part of collection

Institutional Repository

 Document type

journal article

 Rights

(c)2010 Khodyuk, I.V., Dorenbos, P., Institute of Physics
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