Multilayer supermirrors: broadband reflection coatings for the 15- to 100-keV range

K. D. Joensen; P. Gorenstein; Finn Erland Christensen; P. Hoeghoej

doi:10.1117/12.192082

Multilayer supermirrors: broadband reflection coatings for the 15- to 100-keV range

K. D. Joensen, P. Gorenstein, Finn Erland Christensen, P. Hoeghoej

Research output: Contribution to journal › Journal article › Research › peer-review

Abstract

Supermirrors are multilayer structures where the thickness of the layers down through the structure changes so that wide-band reflection occurs. The principles were developed in the mid-70's and have been used extensively for neutron optics. Absorption in the upper layers limits the attainable reflectivity for X-rays. For hard X-rays (>= 15 keV), the absorption, however, is low enough that it is possible to design supermirrors with 10 - 70% reflectivity in a band approximately equals 3 times the width of the total reflection regime. Supermirrors of W/Si and Ni/C have been successfully fabricated and characterized. The measured X-ray reflectivities are well accounted for by the standard dynamical theories of multilayer reflection. Hard X-ray applications that could benefit from X-ray supermirror coatings include focusing and imaging instrumentation for astrophysics, and collimating and focusing device for synchrotron radiation.

Original language	English
Journal	Proceedings of SPIE, the International Society for Optical Engineering
Issue number	2253
Pages (from-to)	299-308
ISSN	0361-0748
DOIs	https://doi.org/10.1117/12.192082
Publication status	Published - 1994
Event	Optical Interference Coatings - Grenoble, France Duration: 5 Jun 1994 → 5 Jun 1994

Conference

Conference	Optical Interference Coatings
Location	Grenoble
Country/Territory	France
Period	05/06/1994 → 05/06/1994

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title = "Multilayer supermirrors: broadband reflection coatings for the 15- to 100-keV range",

abstract = "Supermirrors are multilayer structures where the thickness of the layers down through the structure changes so that wide-band reflection occurs. The principles were developed in the mid-70's and have been used extensively for neutron optics. Absorption in the upper layers limits the attainable reflectivity for X-rays. For hard X-rays (>= 15 keV), the absorption, however, is low enough that it is possible to design supermirrors with 10 - 70% reflectivity in a band approximately equals 3 times the width of the total reflection regime. Supermirrors of W/Si and Ni/C have been successfully fabricated and characterized. The measured X-ray reflectivities are well accounted for by the standard dynamical theories of multilayer reflection. Hard X-ray applications that could benefit from X-ray supermirror coatings include focusing and imaging instrumentation for astrophysics, and collimating and focusing device for synchrotron radiation.",

author = "Joensen, {K. D.} and P. Gorenstein and Christensen, {Finn Erland} and P. Hoeghoej",

year = "1994",

doi = "10.1117/12.192082",

language = "English",

pages = "299--308",

journal = "Proceedings of SPIE, the International Society for Optical Engineering",

issn = "0361-0748",

number = "2253",

note = "Optical Interference Coatings ; Conference date: 05-06-1994 Through 05-06-1994",

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TY - JOUR

T1 - Multilayer supermirrors: broadband reflection coatings for the 15- to 100-keV range

AU - Joensen, K. D.

AU - Gorenstein, P.

AU - Christensen, Finn Erland

AU - Hoeghoej, P.

PY - 1994

Y1 - 1994

N2 - Supermirrors are multilayer structures where the thickness of the layers down through the structure changes so that wide-band reflection occurs. The principles were developed in the mid-70's and have been used extensively for neutron optics. Absorption in the upper layers limits the attainable reflectivity for X-rays. For hard X-rays (>= 15 keV), the absorption, however, is low enough that it is possible to design supermirrors with 10 - 70% reflectivity in a band approximately equals 3 times the width of the total reflection regime. Supermirrors of W/Si and Ni/C have been successfully fabricated and characterized. The measured X-ray reflectivities are well accounted for by the standard dynamical theories of multilayer reflection. Hard X-ray applications that could benefit from X-ray supermirror coatings include focusing and imaging instrumentation for astrophysics, and collimating and focusing device for synchrotron radiation.

AB - Supermirrors are multilayer structures where the thickness of the layers down through the structure changes so that wide-band reflection occurs. The principles were developed in the mid-70's and have been used extensively for neutron optics. Absorption in the upper layers limits the attainable reflectivity for X-rays. For hard X-rays (>= 15 keV), the absorption, however, is low enough that it is possible to design supermirrors with 10 - 70% reflectivity in a band approximately equals 3 times the width of the total reflection regime. Supermirrors of W/Si and Ni/C have been successfully fabricated and characterized. The measured X-ray reflectivities are well accounted for by the standard dynamical theories of multilayer reflection. Hard X-ray applications that could benefit from X-ray supermirror coatings include focusing and imaging instrumentation for astrophysics, and collimating and focusing device for synchrotron radiation.

U2 - 10.1117/12.192082

DO - 10.1117/12.192082

M3 - Journal article

SN - 0361-0748

SP - 299

EP - 308

JO - Proceedings of SPIE, the International Society for Optical Engineering

JF - Proceedings of SPIE, the International Society for Optical Engineering

IS - 2253

T2 - Optical Interference Coatings

Y2 - 5 June 1994 through 5 June 1994

ER -

Multilayer supermirrors: broadband reflection coatings for the 15- to 100-keV range

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