Dear Irena,

PS  For the specific case of carbon nano tubes, the cylinders are of course very long and thin, so writing a model th at performs the necessary numerical integrations reliably and accurately is non-trivial. Some other members of the sasview coding team have already had some thoughts in this direction .< o:p>

Richard Heenan (also at STFC ISIS Facility)

From: users [mailto:users-bounces@lists.sasview.org] On Behalf Of stephen.king@ stfc.ac.uk
Sent: 19 March 2018 14:19
To: irenal@campus.technion.ac.il
Cc: users@sasview.org
Subject: Re: [SasView Users] Core + 2 shells cylinder model

Dear Irena,

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As you have notice d, SasView does not have a multi-shell cylinder model. But since you are now the third person in the last 6 months to have asked for such a model, maybe it is about time we provide d one! I will ‘ticket’ the requirement…

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In the meantime, t he only fitting program I know with such a model is Olivier Tache’s pySAXS . But it is not the most straightforward program to use.

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Kind regards,

Steve King

ISIS Facility

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(on behalf of the SasView development team)

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From: users [mailto:users-bounces@lists.sasview. org] On Behalf Of irenal@ca mpus.technion.ac.il
Sent: 19 March 2018 11:56
To: users@sasview.org
Subject: [SasView Users] Core + 2 shells cylinder model

Hello,

I'm a PhD student in the chemical engineering dept. at the Technion institute of technology, Israel.

I study carbon nanotubes dispersions stabilized with d ispersants using SANS.

I am looking for a model similar to the idea of " core_multi_shell" but for a cylinder instead of  a sphere. I need a cylinder with a core and 2 concentric shells, each shell has its own SLD.

Are you familiar with such a model?< /p>

I've looked in the search engine and in the marketplac e but could not find such a model.

Best,

Irena Levin