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Actinide Speciation by Photothermal Spectroscopies: Instrumentation Development

Published online by Cambridge University Press:  28 February 2011

J.M. Berg ,
C.D. Tait ,
D.E. Morris  and
W.H. Woodruff
J.M. Berg
Affiliation:
Isotope and Nuclear Chemistry Division; Los Alamos National Laboratory; Los Alamos, NM 87545
C.D. Tait
Affiliation:
Isotope and Nuclear Chemistry Division; Los Alamos National Laboratory; Los Alamos, NM 87545
D.E. Morris
Affiliation:
Isotope and Nuclear Chemistry Division; Los Alamos National Laboratory; Los Alamos, NM 87545
W.H. Woodruff
Affiliation:
Isotope and Nuclear Chemistry Division; Los Alamos National Laboratory; Los Alamos, NM 87545
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Abstract

Photoacoustic spectroscopy using pulsed laser excitation is being developed by a number of research groups as one of the most promising methods for studying speciation of actinides in solution at environmentally relevant concentrations. We present details of a number of hardware and software techniques we have implemented which, once fully developed, we believe will improve the sensitivity of the method. Our approach is based on more extensive waveform analysis. While most signal processing techniques extract the analytical signal from only a small portion of the acoustic waveform produced in the detector by an absorption event, we describe two methods that use more of the waveform. Other methods of minimizing noise sources using both hardware and software are also described.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 212: Symposium P – Scientific Basis for Nuclear Waste Management XIV , 1990 , 531
Copyright
Copyright © Materials Research Society 1991

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References

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