Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
REFERENCES
This page provides useful references, such as data reduction, among other information.
- Data reduction links
- NSF polarization correction: a pdf file mathematically delineating the efficiency correction of NSFs
- NSF Triple Axis Info: Communication setup between instrument computer and NSF computer and measurement modifiers
- PHADES 3He common trajectories: common trajectories used for polarization analysis or transmission measurements at PHADES test station
- SANS sample cans: drawings and dimensions for single and manifold sample cans used with polarized beam experiments
|
Max Q Calculation |
\(Q = \frac{2{\pi}sin(2\theta)}{\lambda}\) |
\(2\theta\) = angle \({\lambda}\) = wavelength |
example: \(Q = \frac{2{\pi}sin(5)}{7.5}\) = .073 Å-1 |
|---|---|---|---|
|
Opacity Calculation |
\(\frac{opacity(\lambda_1)}{\lambda_1}\) = \(\frac{opacity(\lambda_2)}{\lambda_2}\) |
opacity = n\(\sigma\)l This is given for a specific cell optimized for a given \({\lambda}\) |
example: Burgundy is a 5 Å cell calc. opacity for 6 Å expt. \(\frac{x}{6 Å}\) = \(\frac{3.138 Å}{5 Å}\) x = 3.766 opacity |
Contacts
-
(301) 975-6222
-
(301) 975-6232