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[ <--- prev -- ] [ HOME ] [ -- next ---> ] MAT-PROPProvides extra information about materials
For SDUM whatever except DPA-ENER, USERDIREctive: WHAT(1) = Gas pressure in atmospheres. 0.0 : ignored < 0.0 : resets to 1 atm a possible previously input pressure value WHAT(2) = RHOR factor : this factor multiplies the density of the material(s) when calculating the density effect parameters (e.g. if a reduced density is used to simulate voids, but of course the density effect parameters must be computed with the actual local physical density at the microscopic level). See Note 3) below. = 0.0 : ignored < 0.0 : a possible previously input value is restored to default = 1.0 Default = 1.0 WHAT(3) > 0: average ionisation potential to be used for dE/dx calculations (eV) < 0: a default value of the average ionisation potential is obtained from the systematics of Ziegler [Zie77] or Sternheimer, Berger and Seltzer [Ste84] = 0: ignored Default: ionisation potential calculated from systematics WHAT(4) = lower bound of the indices of materials, or corresponding name, in which gas pressure, RHOR factor or ionisation potential are set ("From material WHAT(4)...") Default = 3.0 WHAT(5) = upper bound of the indices of materials, or corresponding name, in which gas pressure, RHOR factor or ionisation potential are set ("... to material WHAT(5)...") Default = WHAT(4) WHAT(6) = step length in assigning indices ("...in steps of WHAT(6)") Default = 1. Default (option MAT-PROP not given): if the density of the default material or that assigned by a MATERIAL card is > 0.01, the material is not assumed to be a gas. Otherwise it is a gas at a default pressure of 1 atmosphere. If the material is a compound, the average ionisation potential is that resulting from applying Bragg's rule of additivity to stopping power. For SDUM = DPA-ENER: WHAT(1) > 0.0: Damage energy threshold (eV) for the given materials (see Note 5) = 0.0: ignored Default = 30 eV WHAT(2) = Not used WHAT(3) = Not used WHAT(4) = lower bound of the indices of materials, or corresponding name, in which the damage energy threshold has to be applied ("From material WHAT(4)...") Default = 3.0 WHAT(5) = upper bound of the indices of materials, or corresponding name, in which the damage energy threshold has to be applied ("... to material WHAT(5)...") Default = WHAT(4) WHAT(6) = step length in assigning indices ("...in steps of WHAT(6)") Default = 1. Default (option MAT-PROP not given): Damage energy threshold = 30 eV for all materials For SDUM = USERDIREctive WHAT(1) = 0.0 : ignored > 0.0 : a call to the user routine USRMED will be performed at run time every time a particle is going to be transported in the selected materials (spot depositions ARE anyway performed) < 0.0 : a possible previously given value is restored to default = no call Default = no call (-1.0) WHAT(2) = Not used WHAT(3) = Not used WHAT(4) = lower bound of the indices of materials for which the call to USRMED has to be performed ("From material WHAT(4)...") Default = 3.0 WHAT(5) = upper bound of the indices of materials for which the call to USRMED has to be performed ("... to material WHAT(5)...") Default = WHAT(4) WHAT(6) = step length in assigning indices ("...in steps of WHAT(6)") Default = 1. Default (option MAT-PROP not given): no extra information about the assigned materials is supplied. Notes: SDUM = blank (i.e. /= DPA-ENER, USERDIREctive):
SDUM = DPA-ENER:
SDUM = USERDIREctive:
Example 1 (number based): * Call USRMED every time a particle is going to be transported in Pb Glass or * in plexiglas (PMMA) *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8 MATERIAL 1. 1.00794 8.3748E-5 3. 0.0 1. HYDROGEN MATERIAL 6. 12.011 2.265 6. 0.0 0. CARBON MATERIAL 8. 15.9994 0.001429 8. 0.0 0. OXYGEN MATERIAL 14. 28.0855 2.33 14. 0.0 0. SILICON MATERIAL 22. 47.88 4.54 11. 0.0 0. TITANIUM MATERIAL 33. 74.9216 5.73 12. 0.0 0. ARSENIC MATERIAL 82. 207.2 11.35 17. 0.0 0. LEAD MATERIAL 0. 0. 6.22 18. 0.0 0. LEADGLAS COMPOUND -0.156453 8. -0.080866 14. -0.008092 11. LEADGLAS COMPOUND -0.002651 12. -0.751938 17. 0.0 0. LEADGLAS MATERIAL 0. 0. 1.19 15. 0.0 0. PMMA COMPOUND -0.080538 3. -0.599848 6. -0.319614 8. PMMA MAT-PROP 1.0 0.0 0.0 15. 18. 3. USERDIRE The same example, name based: *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8 MATERIAL 1. 1.00794 8.3748E-5 3. 0.0 1. HYDROGEN MATERIAL 6. 12.011 2.265 6. 0.0 0. CARBON MATERIAL 8. 15.9994 0.001429 8. 0.0 0. OXYGEN MATERIAL 14. 28.0855 2.33 14. 0.0 0. SILICON MATERIAL 22. 47.88 4.54 11. 0.0 0. TITANIUM MATERIAL 33. 74.9216 5.73 12. 0.0 0. ARSENIC MATERIAL 82. 207.2 11.35 17. 0.0 0. LEAD MATERIAL 0. 0. 6.22 18. 0.0 0. LEADGLAS COMPOUND -0.156453 OXYGEN -0.080866 SILICON -0.008092 TITANIUM LEADGLAS COMPOUND -0.002651 ARSENIC -0.751938 LEAD 0.0 0. LEADGLAS MATERIAL 0. 0. 1.19 15. 0.0 0. PMMA COMPOUND -0.080538 HYDROGEN -0.599848 CARBON -0.319614 OXYGEN PMMA MAT-PROP 1.0 0.0 0.0 PMMA LEADGLAS 3. USERDIRE Example 2: * Lung tissue with ICRP composition and Sternheimer parameters *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8 MATERIAL 1. 1.00794 8.3748E-5 3. 0.0 1. HYDROGEN MATERIAL 6. 12.011 2.265 6. 0.0 0. CARBON MATERIAL 7. 14.00674 0.0011653 7. 0.0 0. NITROGEN MATERIAL 8. 15.9994 0.001429 8. 0.0 0. OXYGEN MATERIAL 12. 24.305 1.74 9. 0.0 0. MAGNESIU MATERIAL 11. 22.98977 0.971 10. 0.0 0. SODIUM MATERIAL 26. 55.847 7.874 11. 0.0 0. IRON MATERIAL 16. 32.066 2.0 12. 0.0 0. SULFUR MATERIAL 17. 35.4527 2.9947E-3 13 0.0 0. CHLORINE MATERIAL 19. 39.0983 0.862 14. 0.0 0. POTASSIU MATERIAL 15. 30.97376 2.2 16. 0.0 0. PHOSPHO MATERIAL 30. 65.39 7.133 17. 0.0 0. ZINC MATERIAL 20. 40.078 1.55 21. 0.0 0. CALCIUM * Local density of lung is 1.05 g/cm3 MATERIAL 0.0 0.0 1.05 18. 0.0 0. LUNG COMPOUND -0.101278 3. -0.10231 6. -0.02865 7. LUNG COMPOUND -0.757072 8. -0.00184 10. -0.00073 9. LUNG COMPOUND -0.0008 16. -0.00225 12. -0.00266 13. LUNG COMPOUND -0.00194 14. -0.00009 21. -0.00037 11. LUNG COMPOUND -0.00001 17. 0. 0. 0. 0. LUNG * Average density of lung is 1.05*0.286 = 0.3 g/cm3. Average ionisation * potential is 75.3 eV (At. Data Nucl. Data Tab. 30, 261 (1984)) MAT-PROP 0.0 0.286 75.3 18. 0. 0. STERNHEI 3.4708 0.2261 2.8001 0.08588 3.5353 0. 18 The same example, name based: *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8 MATERIAL 1. 1.00794 8.3748E-5 3. 0.0 1. HYDROGEN MATERIAL 6. 12.011 2.265 6. 0.0 0. CARBON MATERIAL 7. 14.00674 0.0011653 7. 0.0 0. NITROGEN MATERIAL 8. 15.9994 0.001429 8. 0.0 0. OXYGEN MATERIAL 12. 24.305 1.74 9. 0.0 0. MAGNESIU MATERIAL 11. 22.98977 0.971 10. 0.0 0. SODIUM MATERIAL 26. 55.847 7.874 11. 0.0 0. IRON MATERIAL 16. 32.066 2.0 12. 0.0 0. SULFUR MATERIAL 17. 35.4527 2.9947E-3 13 0.0 0. CHLORINE MATERIAL 19. 39.0983 0.862 14. 0.0 0. POTASSIU MATERIAL 15. 30.97376 2.2 16. 0.0 0. PHOSPHO MATERIAL 30. 65.39 7.133 17. 0.0 0. ZINC MATERIAL 20. 40.078 1.55 21. 0.0 0. CALCIUM MATERIAL 0.0 0.0 1.05 18. 0.0 0. LUNG COMPOUND -0.101278 HYDROGEN -0.10231 CARBON -0.02865 NITROGEN LUNG COMPOUND -0.757072 OXYGEN -0.00184 SODIUM -0.00073 MAGNESIU LUNG COMPOUND -0.0008 PHOSPHO -0.00225 SULFUR -0.00266 CHLORINE LUNG COMPOUND -0.00194 POTASSIU -0.00009 CALCIUM -0.00037 IRON LUNG COMPOUND -0.00001 ZINC 0. 0. 0. 0. LUNG MAT-PROP 0.0 0.286 75.3 LUNG 0. 0. STERNHEI 3.4708 0.2261 2.8001 0.08588 3.5353 0. LUNG Example 3 (number based): * Definition of air at non-standard pressure. *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8 MATERIAL 6. 12.011 2.265 6. 0.0 0. CARBON MATERIAL 7. 14.00674 0.0011653 7. 0.0 0. NITROGEN MATERIAL 8. 15.9994 0.001429 8. 0.0 0. OXYGEN MATERIAL 18. 39.948 1.662E-3 20. 0.0 0. ARGON * AIR defined as air with normal NTP density (0.001205) MATERIAL 0.0 0.0 0.001205 10. 0.0 0. AIR COMPOUND -0.000124 6. -0.755267 7. -0.231781 8. AIR COMPOUND -0.012827 20. AIR * AIR2 defined as air with a density 0.002410, double of that at NTP MATERIAL 0.0 0.0 0.002410 11. 0.0 0. AIR2 COMPOUND -0.000124 6. -0.755267 7. -0.231781 8. AIR2 COMPOUND -0.012827 20. AIR2 * The pressure of AIR2 is 2 atm. Set also the ionisation potential = 85.7 eV MAT-PROP 2.0 0.0 85.7 10. STERNHEI 10.5961 1.7418 4.2759 0.10914 3.3994 0. 11 The same example, name based: *...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8 MATERIAL 6. 12.011 2.265 6. 0.0 0. CARBON MATERIAL 7. 14.00674 0.0011653 7. 0.0 0. NITROGEN MATERIAL 8. 15.9994 0.001429 8. 0.0 0. OXYGEN MATERIAL 18. 39.948 1.662E-3 20. 0.0 0. ARGON MATERIAL 0.0 0.0 0.001205 10. 0.0 0. AIR COMPOUND -0.000124 CARBON -0.755267 NITROGEN -0.231781 OXYGEN AIR COMPOUND -0.012827 ARGON AIR MATERIAL 0.0 0.0 0.002410 11. 0.0 0. AIR2 COMPOUND -0.000124 CARBON -0.755267 NITROGEN -0.231781 OXYGEN AIR2 COMPOUND -0.012827 ARGON AIR2 MAT-PROP 2.0 0.0 85.7 AIR STERNHEI 10.5961 1.7418 4.2759 0.10914 3.3994 0. AIR2 |
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