Required: Need a tutorial on analysing magnetic scattering (Trac #686)

[smk78]

We should provide some example magnetic datasets in the test folder

Migrated from http://trac.sasview.org/ticket/686

{
    "status": "assigned",
    "changetime": "2017-10-27T16:37:13",
    "_ts": "2017-10-27 16:37:13.444163+00:00",
    "description": "We should provide some example magnetic datasets in the test folder",
    "reporter": "smk78",
    "cc": "",
    "resolution": "",
    "workpackage": "SasView QA and testing",
    "time": "2016-10-04T15:58:11",
    "component": "SasView",
    "summary": "Add some magnetic datasets to the test data folder",
    "priority": "major",
    "keywords": "",
    "milestone": "SasView 4.3.0",
    "owner": "dirk",
    "type": "enhancement"
}

[ajj]

Trac update at 2016/10/07 20:04:12:

• ajj changed owner from "" to "dirk"
• ajj changed status from "new" to "assigned"

[butlerpd]

Trac update at 2016/12/20 16:42:05:

• butler commented:

Moving to 4.2 due to lack of resources to achieve in a time and as not critical to 4.1

• butler changed milestone from "SasView 4.1.0" to "SasView 4.2.0"

[butlerpd]

Trac update at 2017/10/27 16:37:13: butler changed milestone from "SasView 4.2.0" to "SasView 4.3.0"

[butlerpd]

Tagging as PolBeam and moving to 5.1

[dehoni]

Attached are some 2D and 1D sector data from 10nm nanospheres in d8-toluene (c_Fe2O3 = 50 mg/ml, ~1 vol%) at an aligning magnetic field of 1.5 T in horizontal direction. The 2D data need renaming otherwise SASview does not recognize them as 2D. The polarised beam data (incoming polarised beam, ie SANSPOL no PA) are from the experiment 5-54-60 at D22 courtesy of Dr. Sabrina Disch, University of Cologne, Germany. According to ILL data policy the data are now open access released under the terms of the Creative Commons license CC-BY. The results have been published in S. Disch, New J. Phys. 14, 013025 (2012), doi:10.1088/1367-2630/14/1/013025 and further discussed in her PhD thesis (https://publications.rwth-aachen.de/record/465381). Taking the reported values as starting parameters it should be possible to model the scattering. Be aware, for the nuclear structure one has to take into account micelles composed of remaining oleic acid.

If needed I can hand in also the raw data and the Grasp project used.

2D data S50_I-_2D.txt S50_I+_2D.txt S50_unpol_2D.txt

1D sectors S50_15kG_horizSector_RF-.txt S50_15kG_horizSector_RF+.txt S50_15kG_vertSector_RF-.txt S50_15kG_vertSector_RF+.txt

[dehoni]

Magnetic-field dependent data are missing. But these can not be analysed with the current magnetic description that has only fixed orientation or at best small angular dispersion.

[dehoni]

The data as such are pretty, need transfering to the test folder, and it certainly needs a tutorial "How to analyse magnetic data in Sasview" to make any sense for an interested user.

[smk78]

With the data now committed to the repo(s) the outstanding action on this issue is a tutorial on analysing magnetic data, so moving this issue to tutorials.