Neutron Transmission Calculator
By Joachim Wuttke 2012.
This is a beta preview.
Please do not trust results unless
you know the order of magnitude is right.
Feedback will be welcome.
Cross sections σ in barn=10-24cm2;
absorption cross section at 6.27 Å;
molecular weights M in amu:
| Element | σcoh | σinc | σabs | σtot | M | times |
|---|
| H | 1.76 | 80.26 | 1.16 | 83.18 | 1.00 | 2 |
| O | 4.23 | 0.00 | 0.00 | 4.23 | 16.00 | 1 |
| total | 7.75 | 160.52 | 2.32 | 170.58 | 18.00 |
|---|
Transmission T=exp(-nσtotd);
Scattering probability S=1-exp(-nσcoh+incd):T=0.945, S=0.055 for a flat sample, thickness 0.1 mm, under 90°;
T=0.922, S=0.076 for a flat sample, thickness 0.1 mm, under 45°;
T=0.836, S=0.162 for a tubular sample, layer thickness 0.1 mm.Activation estimation disabled
Using the cross-section tabulation from NIST
[Neutron News, Vol. 3, No. 3, 1992, pp. 29-37].