TY - JOUR
T1 - Wavelength resolution options for a time-of-flight reflectometer using VITESS code of simulation
AU - Paul, Amitesh
PY - 2011/8/1
Y1 - 2011/8/1
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=79958239269&partnerID=8YFLogxK
U2 - 10.1016/j.nima.2011.01.028
DO - 10.1016/j.nima.2011.01.028
M3 - 文章
AN - SCOPUS:79958239269
VL - 646
SP - 158
EP - 166
JO - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
JF - Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment
SN - 0168-9002
IS - 1
ER -