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Time-Resolved Spectroscopy of Scintillation Materials using X-RAY Synchrotron Radiation

Published online by Cambridge University Press:  21 February 2011

Andrey N. Belsky ,
Vitaly V. Mikhaihin ,
Andrey L. Rogalev  and
Eduard I. Zinin
Andrey N. Belsky
Affiliation:
Synchrotron Radiation Laboratory, Physics Department, Moscow State University, Moscow, 117234, Russia
Vitaly V. Mikhaihin
Affiliation:
Synchrotron Radiation Laboratory, Physics Department, Moscow State University, Moscow, 117234, Russia
Andrey L. Rogalev
Affiliation:
Synchrotron Radiation Laboratory, Physics Department, Moscow State University, Moscow, 117234, Russia
Eduard I. Zinin
Affiliation:
Institute for Nuclear Physics, Novosibirsk, Russia
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Abstract

The time-resolved luminescence spectra and decay kinetics of BaF2, BGO, and CeF3, were measured with the dissector technique using X-ray synchrotron radiation (SR)of different spectral composition from wiggler mounted at VEPP-3 storage ring (Novosibirsk).

Two effects of X-ray excitation energy on the luminescence parameters were observed: modifications of the emission spectrum and acceleration of decay kinetics. Under the excitation by soft X-ray SR the 220 nm emission band for BaF2 is broadened, whereas shorter wavelength part of CeF3 and BGO emission spectra increases. For luminescence decay of excitons and crossluminescence the degree of the deviation from the single exponential law depends on the photon energies and increases under soft X-ray excitation as well. These effects are supposed to be due to the interaction of electronic excitations created after the relaxation of deep core holes.

Fast intrinsic luminescence was observed for Cdl2, and CsPbCl3 under X-ray SR excitation. 500 nm band of Cdl2 has characteristic time τ=4.6 ns, whereas 420 nm band of CsPbCl3 shows very fast decay with τ=0.2 ns.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 348 , 1994 , 235
Copyright
Copyright © Materials Research Society 1994

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References

REFERENCES

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