Calculate transmission and scattering power

Material

Formula

Resulting formula: {{result.data.finalformula}}

Formula is incorrect.

Plain

Plain with H[1]/(T) as volatile

FASTA Amino acid sequence

FASTA DNA sequence

FASTA RNAsequence

Deuterated

Density

Density (g/cm³)

Natural isotope composition density (g/cm³)

Specify either density or natural density as non-zero.

Thickness (cm)

Neutron data

Wavelength (Å)

Energy(meV)

wavevector k (Å^-1)

velocity (m*s^-1)

Specify either energy or wavelength or wavevector k.

Formula help

Formula:

CaCO3

Formula with fragments:

CaCO3+6H2O

Formula with parentheses:

HO ((CH2)2O)6 H

Formula with isotope:

CaCO[18]3+6H2O

Counts can be integer or decimal:

CaCO3+(3HO1.5)2

Mass fractions use %wt, with the final portion adding to 100%:

10%wt Fe // 15% Co // Ni

Volume fractions use %vol, with the final portion adding to 100%:

10%vol Fe@8.1 // Ni@8.5

For volume fractions you have to specify the density using @density!

Mixtures can nest. The following is a 10% salt solution by weight mixed 20:80 by volume with D2O:

20%vol (10%wt NaCl@2.16 // H2O@1) // D2O@1

Error

Results

Absorption

1/e penetration depth(cm)	absorption length(cm⁻¹)	Transmission @ cm (rel.)

Macroscopic cross-sections(cm⁻¹)

absorption	coherent	incoherent

Scattering length density (10⁻⁶Å⁻²)

real	imaginary	incoherent

D₂O matching density

Matching density	H2O SLD(10⁻⁶Å⁻²)	D2O SLD(10⁻⁶Å⁻²)

Note 1: Matching will treat T (tritium) as volatile/replaceable hydrogens.

Note 2: This uses periodictable.fasta for the calculations

Atomic data

	Cross-sections (barn)
Atom	total	coherent	incoherent	absorption	energy dependent

	Scattering length (fm)
Atom	b_c	b_c_i	b_p	b_m	b_p_i	b_m_i	energy dependent