How to rejuvenate an old lady: New crystals for the backscattering spectrometer IN10

O. G. Randl; H. Franz; T. Gerstendörfer; W. Petry; G. Vogl; A. Magerl

doi:10.1016/S0921-4526(97)89265-4

How to rejuvenate an old lady: New crystals for the backscattering spectrometer IN10

O. G. Randl, H. Franz, T. Gerstendörfer, W. Petry, G. Vogl, A. Magerl

Department of Physics

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

After 25 years of operation, the backscattering spectrometer IN10 of the ILL is still alive and kicking. Considerable progress has been achieved by replacing the small single crystals of the existing monochromator and analysers by elastically and plastically deformed large crystals. In the case of unpolished Si-(111) the resolution improves from 1 to 0.6 μeV (FWHM); its shape changes from Lorentzian to Gaussian. The instrument was also equipped with (large crystal) Si-(311) analysers in order to extend the available Q-range. The mosaicity of the monochromator was increased by oxygen precipitation. We find a strong gain in intensity, but also a loss in resolution.

Original language	English
Pages (from-to)	1064-1065
Number of pages	2
Journal	Physica B: Condensed Matter
Volume	234-236
DOIs	https://doi.org/10.1016/S0921-4526(97)89265-4
State	Published - 2 Jun 1997

Keywords

Backscattering
Neutron instruments
Resolution

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10.1016/S0921-4526(97)89265-4

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title = "How to rejuvenate an old lady: New crystals for the backscattering spectrometer IN10",

abstract = "After 25 years of operation, the backscattering spectrometer IN10 of the ILL is still alive and kicking. Considerable progress has been achieved by replacing the small single crystals of the existing monochromator and analysers by elastically and plastically deformed large crystals. In the case of unpolished Si-(111) the resolution improves from 1 to 0.6 μeV (FWHM); its shape changes from Lorentzian to Gaussian. The instrument was also equipped with (large crystal) Si-(311) analysers in order to extend the available Q-range. The mosaicity of the monochromator was increased by oxygen precipitation. We find a strong gain in intensity, but also a loss in resolution.",

keywords = "Backscattering, Neutron instruments, Resolution",

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T1 - How to rejuvenate an old lady

T2 - New crystals for the backscattering spectrometer IN10

AU - Randl, O. G.

AU - Franz, H.

AU - Gerstendörfer, T.

AU - Petry, W.

AU - Vogl, G.

AU - Magerl, A.

PY - 1997/6/2

Y1 - 1997/6/2

N2 - After 25 years of operation, the backscattering spectrometer IN10 of the ILL is still alive and kicking. Considerable progress has been achieved by replacing the small single crystals of the existing monochromator and analysers by elastically and plastically deformed large crystals. In the case of unpolished Si-(111) the resolution improves from 1 to 0.6 μeV (FWHM); its shape changes from Lorentzian to Gaussian. The instrument was also equipped with (large crystal) Si-(311) analysers in order to extend the available Q-range. The mosaicity of the monochromator was increased by oxygen precipitation. We find a strong gain in intensity, but also a loss in resolution.

AB - After 25 years of operation, the backscattering spectrometer IN10 of the ILL is still alive and kicking. Considerable progress has been achieved by replacing the small single crystals of the existing monochromator and analysers by elastically and plastically deformed large crystals. In the case of unpolished Si-(111) the resolution improves from 1 to 0.6 μeV (FWHM); its shape changes from Lorentzian to Gaussian. The instrument was also equipped with (large crystal) Si-(311) analysers in order to extend the available Q-range. The mosaicity of the monochromator was increased by oxygen precipitation. We find a strong gain in intensity, but also a loss in resolution.

KW - Backscattering

KW - Neutron instruments

KW - Resolution

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SN - 0921-4526

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EP - 1065

JO - Physica B: Condensed Matter

JF - Physica B: Condensed Matter

ER -

How to rejuvenate an old lady: New crystals for the backscattering spectrometer IN10

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Keywords

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