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STERNHEIme


     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
Notes:
1) 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]. 2) 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. 0.0 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)

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