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posted by Felicien Filleul at Mar 1, 2017 6:00 PM
Hi Gregorio,

As of my understanding of how the sources are implemented I think your definitions of Mach numbers are correct. For the type of sources available in SPIS by default you can have a look at the Particles sources on spacecraft section of the How to control NUM from UI in SPIS 5 manual.

Depending on what you aim to simulate you could very well use a Maxwellian thruster for the electrons as well.

On the section 5 of this thesis there are some details about two of the SPIS : sources However I could never find clear indications about how a LocalMaxwellSurfDistrib source is different from a Maxwellian thruster one.

Tell me if you happen to find info on that please.



posted by Gregorio Suino at Mar 1, 2017 12:49 PM
Hello to everyone,

i am simulating some ion and electron sources and i have some questions about settings.

i set ions mach number with this formula: v_i/sqrt(k*T_i/m_i).

where: v_i: ions velocity T_i: ions temperature m_i: ions mass k: boltzmann constant

Is correct to set electron mach number as v_e/sqrt(k*T_e/m_e)? where: v_e: electron velocity T_e: electron temperature m_e: electron mass

for ions set SourceType->MaxwellianThruster. what SourceType can I use for electron source?

Thank you.