Wavelength resolution options for a time-of-flight reflectometer using VITESS code of simulation

Amitesh Paul*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

I report on the wavelength resolution options that can be made available on a time-of-flight reflectometer. I take the example of the newly commissioned reflectometer BioRef at Helmholtz-Zentrum Berlin for the purpose. Calculations and simulations using the software package VITESS, I show potential increase in flux densities, an extension of the momentum transfer range accessible as well as a significant extension of the range of constant wavelength resolution of the instrument. It is therefore possible to achieve a virtually continuous range of wavelength resolution from 5% to 11% by using a combination of four different chopper systems. This can be a unique advantage on the time-of-flight reflectometer in investigating thin-film structures accessing a wide range of thicknesses.

Original languageEnglish
Pages (from-to)158-166
Number of pages9
JournalNuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
Volume646
Issue number1
DOIs
StatePublished - 1 Aug 2011
Externally publishedYes

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