Epidote - Sample 1 NanED Round Robin, Data: ESR12

Epidote

The following submission contains the data collection and processing of datasets for the sample epidote under the NanEd round-robin project.  A single crystal was identified, and precession data acquisition techniques were used to collect datasets on the same crystal. The data sets were processed with PETS2 software. The table below summarizes the data collection parameters for the data sets. The following data is also included as a text file in the data folder.

Precession:

General information:

Project

NanED (www.naned.eu)

ESR Project

ESR12 - Round Robin

Project Label

RR1

Sample Label

RR1-S1

Data set Label

RR1-sample1-PEDT

Instrumental:

Instrument

Transmission electron microscope Jeol F200

Radiation source

Cold FEG

Accelerating voltage

200 kV

Wavelength

0.0251 Å

Probe Type

Microdiffraction

Beam Diameter

75nm

Beam Convergence

Parallel beam, convergence <0.1mrad

Detector

Hybrid pixel detector ASI Cheetah M3 (bottom mounted)

Number of pixels in the image

512 x 512

Pixel size

55 µm x 55 µm

Effective camera length

200 mm

Calibration constant

0.00720 Å-1/pixel

Sample description:

Name

Epidote

Chemical composition

Ca2FexAl3-xSi3O13H

Sample source

Natural source from Val d'Ossola, Italy

Sample preparation

Powder crushed on a mortar and dispersed in n-butanol, drop deposited on a Cu grid with holey C film

Experimental:

Data Type

Electron diffraction data - 3D ED

Data collection method

PEDT

Temperature (K) used during data collection

293 K

Number of crystals contributing to the data set

1

Number of experimental frames

95

tilt range, tilt step, tilt per frame

-49.4° to +61.6°, 1°, 0°

Precession angle

1.25°

Exposure time per frame

500ms

Software:

Software used for the data collection

Instamatic software

Software used for processing

PETS2 (ver 2.1.20211012.1037)

Authorship and bibliography

Author(s) of the data

Sara Passuti (ESR12)

Related data

Publication(s)

Files and data formats

Image folder

tiff : Folder containing images of the diffraction pattern from each frames.

Image format

tiff_16bit

Additional folders/files

sample1_crystal_image : image of the crystal

sample1-exp4_petsdata : Log files of PETS2 processing

sample1-exp4.pts2 :_input file for the program PETS2 used for processing  the data

Notes:

*Project Label "RR1" stands for Round Robin 1

*Data set label "RR1-sample-PEDT" stands for Round Robin 1 sample 1, data collection method Precession.

*The additional files can be found in the folder:

Precession\Data_collection_processing