How to get ion mobility of DME

[jiangjc-github]

Dear experts,

I found the topic of getting ion mobility in this link " How to get the Ion Mobility file - Garfield++ - ROOT Forum (cern.ch)". However, there are no ion mobility of DME, do you know how to get the ion mobility of DME?
Thanks very much for help.

Best regard,
Jiechen

[bellenot]

I’m sure @hschindl will be able to help you

[jiangjc-github]

@hschindl
Hi, hschindl，is there some way to know the ion mobility of DME applied in the Garfield++？
Thanks very much.

Best regard,
Jiechen

[hschindl]

I had a quick look at the standard references

• H.W. Ellis, R.Y. Pai, E.W. McDaniel, E.A. Mason and L.A. Viehland, Transport properties of gaseous ions over a wide energy range, At. Data and Nucl. Data Tables 17 (1976) 177-210.
• H.W. Ellis, E.W. McDaniel, D.L. Albritton, L.A. Viehland, S.L. Lin and E.A. Mason,Transport properties of gaseous ions over a wide energy range, part II, At. Data and Nucl. Data Tables 22 (1978) 179-217.
• H.W. Ellis, M.G. Thackston, E.W. McDaniel and E.A. Mason, Transport properties of gaseous ions over a wide energy range, part III, At. Data and Nucl. Data Tables 31(1984) 113-151.
• L.A. Viehland and E.A. Mason, Transport properties of gaseous ions over a wide energy range, part IV, At. Data and Nucl. Data Tables 60 (1995) 37-95.

and didn’t find it there, but please have a look yourself if you find data for DME in one of these compilations.

Rob Veenhof found a value of 0.56 cm²/(Vs) for DME+ in DME. This could be a good starting point. You will need to write a new ion mobility file; you could use this one as a template:

Data/IonMobility_C8Hn+_iC4H10.txt · master · garfield / garfieldpp · GitLab

[jiangjc-github]

Thanks very much for your reply, I check the four literatures again and no specification of DME.
I’ll try your reference value of 0.56 cm2/(Vs) in the simulation, but I worry about some difference of the value for large E/N.

BR,
Jiechen