Hi,
I have recently gone through this paper, http://dx.doi.org/10.1006/adnd.1995.1004, which is, I think, where all of the mobility data currently available in Garfield++ is from based on this q&a that I found, https://garfieldpp.web.cern.ch/garfieldpp/qa/index.php?qa=109&qa_1=the-importance-of-ion-mobility-data. However, when I compare what is written on the Garfield++ mobility files with the correspondents in the paper, things do not seem to agree. For example, for He+, we have
# ------------------------------------------------------------
# Mobility of He+ ions in He measured at T=300 K
# Accuracy: 1 % to E/N=60, 3 % for higher E/N
# Data from Ellis 1976
# ------------------------------------------------------------
6 10.3
8 10.2
10 10.2
12 10.1
15 10.0
20 9.90
25 9.74
30 9.60
40 9.28
50 8.97
60 8.67
80 8.12
100 7.67
120 7.25
150 6.78
200 6.12
250 5.60
300 5.19
400 4.58
500 4.17
600 3.81
700 3.57
However, this is what I found from the paper for He+,
When I look at the two tables, I am not sure what is imported from the paper to form the Garfield mobility file. So, what are the values from the Garfield mobility data?
Also, I recently came across this relatively recent paper, https://iopscience.iop.org/article/10.1088/1748-0221/14/04/P04010/pdf, which presents experimental measurements of ion mobility for isobutane. Does the paper have what needed to form a Garfield mobility file? I am interested in drifting ions inside of isobutane gas, which is one of the gases that currently has no mobility file for.