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<?xml version="1.0" ?> | ||
<?xml version="1.0" encoding="UTF-8"?> | ||
<?xml-stylesheet type="text/xsl" href="nxdlformat.xsl"?> | ||
<definition category="base" extends="NXobject" name="NXaberration" type="group" xmlns="http://definition.nexusformat.org/nxdl/3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"> | ||
<!-- | ||
# NeXus - Neutron and X-ray Common Data Format | ||
# | ||
# Copyright (C) 2014-2022 NeXus International Advisory Committee (NIAC) | ||
# | ||
# This library is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU Lesser General Public | ||
# License as published by the Free Software Foundation; either | ||
# version 3 of the License, or (at your option) any later version. | ||
# | ||
# This library is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
# Lesser General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU Lesser General Public | ||
# License along with this library; if not, write to the Free Software | ||
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
# | ||
# For further information, see http://www.nexusformat.org | ||
--> | ||
<definition xmlns="http://definition.nexusformat.org/nxdl/3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" category="base" type="group" extends="NXobject" name="NXaberration" xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"> | ||
<doc> | ||
Models for aberrations of electro-magnetic lenses in electron microscopy. | ||
|
||
The notation follows `O. Krivanek et al. (1999) <https://doi.org/10.1016/S0304-3991(99)00013-3>`_ | ||
and `O. Krivanek et al. (2003) <https://doi.org/10.1016/S0304-3991(03)00090-1>`_ | ||
See also `S. J. Pennycock and P. D. Nellist <https://doi.org/10.1007/978-1-4419-7200-2>`_ (page 44ff, and page 118ff) | ||
for further details, additional literature, and the unit of the coefficients. | ||
Consult Table 7-2 of Ibid. publication on how to convert between | ||
conventions of different groups/vendors. | ||
Quantified aberration coefficient in an aberration_model. | ||
</doc> | ||
<field name="c_1_0" type="NX_FLOAT" units="NX_LENGTH"> | ||
<field name="magnitude" type="NX_FLOAT" units="NX_LENGTH"/> | ||
<field name="uncertainty" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Defocus | ||
Confidence | ||
</doc> | ||
</field> | ||
<field name="c_1_2_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<field name="uncertainty_model"> | ||
<doc> | ||
Two-fold astigmatism | ||
How was the uncertainty quantified e.g. via the 95% confidence interval. | ||
</doc> | ||
</field> | ||
<field name="c_1_2_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<field name="delta_time" type="NX_FLOAT" units="NX_TIME"> | ||
<doc> | ||
Two-fold astigmatism | ||
Time elapsed since the last measurement. | ||
</doc> | ||
</field> | ||
<field name="c_2_1_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<field name="angle" type="NX_FLOAT" units="NX_ANGLE"> | ||
<doc> | ||
Second-order axial coma | ||
</doc> | ||
</field> | ||
<field name="c_2_1_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Second-order axial coma | ||
</doc> | ||
</field> | ||
<field name="c_2_3_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Threefold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_2_3_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Threefold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_3_0" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Spherical aberration | ||
</doc> | ||
</field> | ||
<field name="c_3_2_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Star aberration | ||
</doc> | ||
</field> | ||
<field name="c_3_2_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Star aberration | ||
</doc> | ||
</field> | ||
<field name="c_3_4_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Fourfold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_3_4_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Fourfold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_5_0" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Fifth-order spherical aberration | ||
For the CEOS definitions the C aberrations are radial-symmetric and have no | ||
angle entry, while the A, B, D, S, or R aberrations are n-fold | ||
symmetric and have an angle entry. | ||
For the NION definitions the coordinate system differs to the one | ||
used in CEOS and instead two aberration coefficients a and b are used. | ||
</doc> | ||
</field> | ||
<field name="name"/> | ||
<field name="alias"/> | ||
</definition> |
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<?xml version="1.0" encoding="UTF-8"?> | ||
<?xml-stylesheet type="text/xsl" href="nxdlformat.xsl"?> | ||
<!-- | ||
# NeXus - Neutron and X-ray Common Data Format | ||
# | ||
# Copyright (C) 2014-2022 NeXus International Advisory Committee (NIAC) | ||
# | ||
# This library is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU Lesser General Public | ||
# License as published by the Free Software Foundation; either | ||
# version 3 of the License, or (at your option) any later version. | ||
# | ||
# This library is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
# Lesser General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU Lesser General Public | ||
# License along with this library; if not, write to the Free Software | ||
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
# | ||
# For further information, see http://www.nexusformat.org | ||
--> | ||
<definition xmlns="http://definition.nexusformat.org/nxdl/3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" category="base" type="group" extends="NXobject" name="NXaberration_model" xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"> | ||
<doc> | ||
Models for aberrations of electro-magnetic lenses in electron microscopy. | ||
|
||
See `S. J. Pennycock and P. D. Nellist <https://doi.org/10.1007/978-1-4419-7200-2>`_ (page 44ff, and page 118ff) | ||
for different definitions available and further details. Table 7-2 of Ibid. | ||
publication (page 305ff) documents how to convert from the NION to the | ||
CEOS definitions. | ||
</doc> | ||
<field name="model"> | ||
<enumeration> | ||
<item value="ceos"/> | ||
<item value="nion"/> | ||
</enumeration> | ||
</field> | ||
<group type="NXaberration"/> | ||
<field name="c_1_0" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Defocus | ||
</doc> | ||
</field> | ||
<field name="c_1_2_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Two-fold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_1_2_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Two-fold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_2_1_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Second-order axial coma | ||
</doc> | ||
</field> | ||
<field name="c_2_1_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Second-order axial coma | ||
</doc> | ||
</field> | ||
<field name="c_2_3_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Threefold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_2_3_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Threefold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_3_0" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Spherical aberration | ||
</doc> | ||
</field> | ||
<field name="c_3_2_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Star aberration | ||
</doc> | ||
</field> | ||
<field name="c_3_2_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Star aberration | ||
</doc> | ||
</field> | ||
<field name="c_3_4_a" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Fourfold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_3_4_b" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Fourfold astigmatism | ||
</doc> | ||
</field> | ||
<field name="c_5_0" type="NX_FLOAT" units="NX_LENGTH"> | ||
<doc> | ||
Fifth-order spherical aberration | ||
</doc> | ||
</field> | ||
</definition> |
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<?xml version="1.0" encoding="UTF-8"?> | ||
<?xml-stylesheet type="text/xsl" href="nxdlformat.xsl"?> | ||
<!-- | ||
# NeXus - Neutron and X-ray Common Data Format | ||
# | ||
# Copyright (C) 2014-2022 NeXus International Advisory Committee (NIAC) | ||
# | ||
# This library is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU Lesser General Public | ||
# License as published by the Free Software Foundation; either | ||
# version 3 of the License, or (at your option) any later version. | ||
# | ||
# This library is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
# Lesser General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU Lesser General Public | ||
# License along with this library; if not, write to the Free Software | ||
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
# | ||
# For further information, see http://www.nexusformat.org | ||
--> | ||
<definition xmlns="http://definition.nexusformat.org/nxdl/3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" category="base" type="group" extends="NXobject" name="NXaberration_model_ceos" xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"> | ||
<doc> | ||
CEOS definitions/model for aberrations of electro-magnetic lenses. | ||
|
||
See `S. J. Pennycock and P. D. Nellist <https://doi.org/10.1007/978-1-4419-7200-2>`_ (page 44ff, and page 118ff) | ||
for different definitions available and further details. Table 7-2 of Ibid. | ||
publication (page 305ff) documents how to convert from the NION to the | ||
CEOS definitions. | ||
</doc> | ||
<field name="model"> | ||
<enumeration> | ||
<item value="ceos"/> | ||
</enumeration> | ||
</field> | ||
<group name="c_1" type="NXaberration"/> | ||
<group name="a_1" type="NXaberration"/> | ||
<group name="b_2" type="NXaberration"/> | ||
<group name="a_2" type="NXaberration"/> | ||
<group name="c_3" type="NXaberration"/> | ||
<group name="s_3" type="NXaberration"/> | ||
<group name="a_3" type="NXaberration"/> | ||
<!--based on feedback from Thilo Remmele the following aberrations could be measured (enhanced mode, tilt angle > 30 mrad) but are not corrected--> | ||
<group name="b_4" type="NXaberration"/> | ||
<group name="d_4" type="NXaberration"/> | ||
<group name="a_4" type="NXaberration"/> | ||
<group name="c_5" type="NXaberration"/> | ||
<group name="s_5" type="NXaberration"/> | ||
<group name="r_5" type="NXaberration"/> | ||
<group name="a_6" type="NXaberration"/> | ||
<!--further comments from Thilo Remmele (Leibniz-Institut für Kristallzüchtung) | ||
ThermoFisher uses CEOS correctors but makes customizations to these in their microscopes | ||
Aberration naming schema: C_order_multiplicity (similar to NXem, but with | ||
another coordinate system and in addition with a confidence entry. | ||
Aberrations with multiplicity 0 have no angle entry (C1,C3,C5,.., CEOS notation) | ||
contrast transferfuntion: ctf = e^(-i*Xi(g)) in Fourier space | ||
aberration function: | ||
Xi(g) = 2*pi/lamda{ 1/2 * (lamda*g)^2 (C20 + C22 cos[2(phi-phi_22)] | ||
+1/3 * (lamda*g)^3 (C31 cos[(phi-phi_31) + C33 cos[3(phi-phi_33) | ||
+1/4 * (lamda*g)^4 (C40 + C42 cos[2(phi-phi_42)] + C44 cos[4(phi-phi_42)] | ||
+1/f * (lamda*g)^f Sum (Cfm cos[m(phi-phi_fm)] where m=[0,2,..f] for even f and m=[1,3,..,f] for odd f--> | ||
<!--Thilo Remmele also mentions that there is a mapping of aberration coefficient names: | ||
C_2_0 -> C1 Defocus | ||
C_2_2 -> A1 2-fold astigmatism | ||
C_3_3 -> A2 3-fold astigmatism | ||
C_3_1 -> B2 axial coma | ||
C_4_0 -> C3 spherical aberration | ||
C_4_4 -> A3 4-fold astigmatism | ||
C_4_2 -> S3 star aberration | ||
C_5_5 -> A4 5-fold astigmatism--> | ||
<!--C_5_1 -> B4 axial coma | ||
C_5_3 -> D4 three lobe aberration | ||
C_6_0 -> C5 spherical aberration | ||
C_6_2 -> S5 star aberration | ||
C_6_4 -> R5 rosette aberration | ||
C_6_6 -> A5 6-fold astigmatism--> | ||
<!--In a session with HRTEM images the corrector is commonly aligned. | ||
The final measurement with the estimated residual aberrations | ||
should be saved in a corrector.html file (an example is appended | ||
at the end of this file. Unfortunately the datetime is not included | ||
in that html output, nor is the used outer tilt angle and exposure time. | ||
The datetime may be estimated from the file datetime and the Delta t entry, | ||
but caution if that datetime is not preserved on file transfers! | ||
More than one detector entry could occure but is not common. | ||
A seperate corrector schema, so it can be easily exchanged to other correctors if necessary. | ||
It might be useful to collect all the corrector entries in one table, for example to analyse the performance of the corrector. | ||
The corrector entry of the nexus em definition lacks the confidence information and the | ||
parameter settings for the estimation oft the aberrations.--> | ||
</definition> |
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<?xml version="1.0" encoding="UTF-8"?> | ||
<?xml-stylesheet type="text/xsl" href="nxdlformat.xsl"?> | ||
<!-- | ||
# NeXus - Neutron and X-ray Common Data Format | ||
# | ||
# Copyright (C) 2014-2022 NeXus International Advisory Committee (NIAC) | ||
# | ||
# This library is free software; you can redistribute it and/or | ||
# modify it under the terms of the GNU Lesser General Public | ||
# License as published by the Free Software Foundation; either | ||
# version 3 of the License, or (at your option) any later version. | ||
# | ||
# This library is distributed in the hope that it will be useful, | ||
# but WITHOUT ANY WARRANTY; without even the implied warranty of | ||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
# Lesser General Public License for more details. | ||
# | ||
# You should have received a copy of the GNU Lesser General Public | ||
# License along with this library; if not, write to the Free Software | ||
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | ||
# | ||
# For further information, see http://www.nexusformat.org | ||
--> | ||
<definition xmlns="http://definition.nexusformat.org/nxdl/3.1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" category="base" type="group" extends="NXobject" name="NXaberration_model_nion" xsi:schemaLocation="http://definition.nexusformat.org/nxdl/3.1 ../nxdl.xsd"> | ||
<doc> | ||
NION definitions/model for aberrations of electro-magnetic lenses. | ||
|
||
See `S. J. Pennycock and P. D. Nellist <https://doi.org/10.1007/978-1-4419-7200-2>`_ (page 44ff, and page 118ff) | ||
for different definitions available and further details. Table 7-2 of Ibid. | ||
publication (page 305ff) documents how to convert from the NION to the | ||
CEOS definitions. | ||
</doc> | ||
<field name="model"> | ||
<enumeration> | ||
<item value="nion"/> | ||
</enumeration> | ||
</field> | ||
<group name="c_1_0" type="NXaberration"/> | ||
<group name="c_1_2_a" type="NXaberration"/> | ||
<group name="c_1_2_b" type="NXaberration"/> | ||
<group name="c_2_1_a" type="NXaberration"/> | ||
<group name="c_2_1_b" type="NXaberration"/> | ||
<group name="c_2_3_a" type="NXaberration"/> | ||
<group name="c_2_3_b" type="NXaberration"/> | ||
<group name="c_3_0" type="NXaberration"/> | ||
<group name="c_3_2_a" type="NXaberration"/> | ||
<group name="c_3_2_b" type="NXaberration"/> | ||
<group name="c_3_4_a" type="NXaberration"/> | ||
<group name="c_3_4_b" type="NXaberration"/> | ||
<group name="c_4_1_a" type="NXaberration"/> | ||
<group name="c_4_1_b" type="NXaberration"/> | ||
<group name="c_4_3_a" type="NXaberration"/> | ||
<group name="c_4_3_b" type="NXaberration"/> | ||
<group name="c_4_5_a" type="NXaberration"/> | ||
<group name="c_4_5_b" type="NXaberration"/> | ||
<group name="c_5_0" type="NXaberration"/> | ||
<group name="c_5_2_a" type="NXaberration"/> | ||
<group name="c_5_2_b" type="NXaberration"/> | ||
<group name="c_5_4_a" type="NXaberration"/> | ||
<group name="c_5_4_b" type="NXaberration"/> | ||
<group name="c_5_6_a" type="NXaberration"/> | ||
<group name="c_5_6_b" type="NXaberration"/> | ||
</definition> |
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