allows to input Sternheimer density effect parameters
(see also MAT-PROP)
WHAT(1) = Sternheimer -C (Cbar) parameter
WHAT(2) = Sternheimer X0 parameter
WHAT(3) = Sternheimer X1 parameter
WHAT(4) = Sternheimer a parameter
WHAT(5) = Sternheimer m parameter
WHAT(6) = Sternheimer delta0 parameter (only for single elements)
SDUM = index of the material to which Sternheimer parameters
apply. Exceptionally, here SDUM must be an integer
number, in free format, rather than a character string.
Default (option STERNHEIme not given): density effect parameters are
computed according to the Sternheimer-Peierls general
formula
Note: For gases the parameters are supposed to be given at
1.0 atm (NTP); the code takes care to scale them at the
actual pressure as given by the MAT-PROP card.
MAT-PROP can be used also to override the value of the
average ionisation potential used by the program.
Sternheimer parameters and ionisation potentials
for elements, compounds and mixtures can be found in [Ste84].
STERNHEIme is one of the two FLUKA options where SDUM is used to
input numerical data. (Actually, the material number is
first read as a string and then an internal reading is
performed on the string to get the number).
Example:
*...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
MATERIAL 29. 63.546 8.96 12. 0.0 0. COPPER
STERNHEIme 4.4190 -0.0254 3.2792 0.14339 2.9044 0.08 12
* Use the copper Sternheimer parameters published in At. Data Nucl. Data
* Tab. 30, 261-271 (1984)
