&GAS: SRIM
Name of the file which contains the SRIM table.
The energy range of the table should at least extend up to the
kinetic energy of the incoming particle, and should extend as far
down as SRIM will allow so as to simulate the final absorption.
The Garfield interface extrapolates to higher and lower energies
by taking resp. the last and first tabulated values.
The file for alpha particles traversing a mixture of He and CF4 would
look as follows:
==================================================================
Calculation using SRIM-2003
SRIM version ---> SRIM-2003.26
Calc. date ---> October 24, 2005
==================================================================
Disk File Name = SRIM Outputs\\Helium in He- C- F
Ion = Helium [2] , Mass = 4.003 amu
Target Density = 1.9000E-03 g/cm3 = 1.1026E+20 atoms/cm3
======= Target Composition ========
Atom Atom Atomic Mass
Name Numb Percent Percent
---- ---- ------- -------
He 2 053.12 020.49
C 6 009.38 010.86
F 9 037.50 068.65
====================================
Bragg Correction = 0.00%
Stopping Units = MeV / (mg/cm2)
See bottom of Table for other Stopping units
Ion dE/dx dE/dx Projected Longitudinal Lateral
Energy Elec. Nuclear Range Straggling Straggling
----------- ---------- ---------- ---------- ---------- ----------
10.00 keV 2.629E-01 6.037E-02 128.41 um 52.40 um 46.05 um
11.00 keV 2.760E-01 5.715E-02 140.80 um 55.57 um 49.42 um
12.00 keV 2.885E-01 5.431E-02 153.00 um 58.53 um 52.63 um
(...)
7.00 MeV 5.985E-01 3.596E-04 39.51 mm 1.44 mm 790.64 um
8.00 MeV 5.416E-01 3.196E-04 48.75 mm 1.96 mm 931.02 um
9.00 MeV 5.000E-01 2.879E-04 58.85 mm 2.44 mm 1.09 mm
10.00 MeV 4.604E-01 2.622E-04 69.81 mm 2.91 mm 1.25 mm
-----------------------------------------------------------
Multiply Stopping by for Stopping Units
------------------- ------------------
1.8999E-02 eV / Angstrom
1.8999E-01 keV / micron
1.8999E-01 MeV / mm
1.0000E+00 keV / (ug/cm2)
1.0000E+00 MeV / (mg/cm2)
1.0000E+03 keV / (mg/cm2)
1.7231E+01 eV / (1E15 atoms/cm2)
1.5537E+00 L.S.S. reduced units
==================================================================
(C) 1984,1989,1992,1998,2003 by J.P. Biersack and J.F. Ziegler
|
Recipe to be provided ... Berta !
[No default; mandatory argument.]
Asymptotic (i.e. high energy) electromagnetic energy loss needed
to produce a single electron, expressed in eV.
The work function depends on the gas and is typically a factor
2 larger than the ionisation energy.
[No default; mandatory argument.]
Asymptotic (i.e. high energy) Fano factor for the production of
electrons.
The Fano factor equals the RMS^2/average of the number of electrons
produced by a given amount of electromagnetic energy. The factor
depends on the electromagnetic energy - it tends to decrease from
1 at threshold to the asymptotic value which needs to be specified.
If set to NONE (or 0), the energy used for an electron will be equal
to the work function, without fluctuations.
[By default: 0.17.]
Go to the top level,
to &GAS,
to SRIM,
to the topic index,
to the table of contents, or to the full text.
Formatted on 09/03/10 at 00:22.