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Parameter
Sqw coh
type
string
Sqw inc
string
sigma coh
sigma inc
sigma abs
V rho
[barns]
[barns]
[barns]
[Å−3 ]
T
xwidth
yheight
zthick
radius o
radius i
thickness
norm sqw
[K]
[m]
[m]
[m]
[m]
[m]
[m]
number
auto qw
boolean
interpolate
order
boolean
integer
concentric
boolean
meaning
Coherent scattering data file name. Use 0 or ”” to
disable
Incoherent scattering data file name. Use 0 or ”” to
scatter isotropically (Vanadium like)
Coherent scattering cross-section. 0 to disable
Incoherent scattering cross-section. 0 to disable
Absorption cross-section. 0 to disable
atomic number density. May also be specified with
molar weight weight in [g/mol] and material density
in [g/cm3 ]
Temperature. 0 disables detailed balance
dimensions of a box shaped geometry
dimensions of a cylinder shaped geometry
sphere geometry if radius i=0
thickness of hollow shape
When positive, the value is used as the integral of
S(q,w). Null value uses computed integral. Any negative value will normalize on the density (for liquids,
NOT recommanded for Powders)
Automatically optimize probability tables during simulation (recommanded)
Smooth S(q, ω) table (recommanded)
Limit multiple scattering up to given order. 0 means
no limitations
Enables to ’enter’ inside concentric hollow geometries
Table 8.2: Main Isotropic Sqw component parameters
Risø–R–1538(EN)
97