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This record is used to describe the target.
ATMAT --- Atomic Fraction and Material
This variable is a string array specifying the elements (chemical
abbreviations) and their atomic fractions in dependence of the regions. The
only index corresponds to the region number according to the numbering in
the geometry file. The chemical abbreviations in one region as well as the
strings describing different regions must be separated by commas
( Note: strings must be enclosed by single quotes!). Relative fractions
of elements in one region must, if necessary at all, be specified right
after the corresponding chemical abbreviation without a blank, comma or
any other character inbetween.
ATMAT='SI,O2','AL2,O3','AL99,CU', for instance, means that there
are three regions, the first consisting of one part silicon (Si) and two
parts oxygen (O), corresponding to silicon-dioxide (SiO2), the second
consisting of two parts aluminum and three parts oxygen (Al2O3), and the
third consisting of 99 parts aluminum and one part copper. The relative
fractions in each region will be automatically normalized to unity. This
means 'Si,O2' and Si0.33,O0.77 is equivalent.

CGFILE --- Geometry File Name
This variable must contain the name of a geometry file. The required syntax
is described in Chapter 6.6.

DENS --- Density
This variable specifies the densities of the regions in
.

NREG --- Number of Regions
This variable specifies the number of target regions.

Horst Wagner
Tue Mar 19 10:24:55 MET 1996