Silicon-based glancing incidence reflection superposition lens

Alexandru Dan Stoica; Xun Li Wang

doi:10.1117/12.451685

18 November 2002 Silicon-based glancing incidence reflection superposition lens

Alexandru Dan Stoica, Xun Li Wang

Proceedings Volume 4785, Advances in Neutron Scattering Instrumentation; (2002) https://doi.org/10.1117/12.451685
Event: International Symposium on Optical Science and Technology, 2002, Seattle, WA, United States

Abstract

Many topics of interest for neutron scattering demand small sampling volumes. Then the scattering instruments should include focusing devices in order to deliver a sharp spatially shaped neutron beam at the sample position. Moreover the wavelength bandwidth should be sufficiently large if time-of-flight method is used. In this contribution a new compact focusing device is proposed. The device is made of a stack of bent silicon wafers, each having a glancing reflective layer deposited on one side and a neutron absorbing layer on the other side. This device acts as a lens by superposing the images delivered by individual mirrors. The aberrations are minimized due to the short length of the device. From this point of view this type of superposition lens is equivalent to a long elliptic or parabolic mirror. Consequently a two dimensional focusing could be obtained by combining two devices in a Kirkpatrik-Baez set-up. Basic design principles are described and Monte-Carlo simulation results are presented. Possible applications in neutron instrumentation are reviewed.

Citation Download Citation

Alexandru Dan Stoica and Xun Li Wang "Silicon-based glancing incidence reflection superposition lens", Proc. SPIE 4785, Advances in Neutron Scattering Instrumentation, (18 November 2002); https://doi.org/10.1117/12.451685

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
9 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Mirrors

Semiconducting wafers

Silicon

Reflectors

Scattering

Superposition

Reflectivity

Show All Keywords

Keywords/Phrases

Search In:

Publication Years