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Advances in the development of encapsulants for mercuric iodide X-ray detectors

Iwanczyk, J. S. and Wang, Y. J. and Bradley, J. G. and Albee, A. L. and Schnepple, W. F. (1990) Advances in the development of encapsulants for mercuric iodide X-ray detectors. IEEE Transactions on Nuclear Science, 37 (6). pp. 2214-2218. ISSN 0018-9499. https://resolver.caltech.edu/CaltechAUTHORS:20131022-112714082

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Abstract

Advances in the development of protective impermeable encapsulants with high transparency to ultra-low-energy X-rays for use on HgI_2 X-ray detectors are reported. Various X-ray fluorescence spectra from coated detectors are presented. The X-ray absorption in the encapsulants has been analyzed using characteristic radiation from various elements. Results suggest that low-energy cutoffs for the detectors are not determined solely by the encapsulating coatings presently employed but are also influenced by the front electrode and surface effects, which can affect the local electric field or the surface recombination velocity. An energy resolution of 182 eV (FWHM) has been achieved for Ni L lines at 850 eV. Improved detector sensitivity to X-ray energies under 700 eV is demonstrated.


Item Type:Article
Related URLs:
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http://dx.doi.org/10.1109/23.101259 DOIArticle
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=101259PublisherArticle
Additional Information:© 1990 IEEE. Manuscript received January 17, 1990; revised June 26, 1990. This work was sponsored by the National Aeronautics and Space Administration and supported in part by NIH grant #5R01 GM 37161. The valuable technical assistance of Mrs. F. Riquelme, Messrs. N. Dorri and B. Dancy of USC, and Mr. V. Taylor at JPL are greatly appreciated.
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Funding AgencyGrant Number
NASAUNSPECIFIED
NIH5R01 GM 37161
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INSPEC Accession Number3868453
Issue or Number:6
Record Number:CaltechAUTHORS:20131022-112714082
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20131022-112714082
Official Citation:Iwanczyk, J.S.; Wang, Y. J.; Bradley, J. G.; Albee, A. L.; Schnepple, W.F., "Advances in the development of encapsulants for mercuric iodide X-ray detectors," Nuclear Science, IEEE Transactions on , vol.37, no.6, pp.2214,2218, Dec 1990 doi: 10.1109/23.101259
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:42009
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:24 Oct 2013 15:38
Last Modified:03 Oct 2019 05:54

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