Return-Path: <a.huebl@hzdr.de>
Received: from [149.220.60.110] (account huebl@hzdr.de [149.220.60.110] verified)
  by hzdr.de (CommuniGate Pro SMTP 6.1.12)
  with ESMTPSA id 15446930 for picongpu-users@hzdr.de; Fri, 13 Jan 2017 16:19:05 +0100
Subject: Re: [PIConGPU-Users] Gas profile
To: picongpu-users@hzdr.de
References: <list-16163712@cg2.fz-rossendorf.de>
From: Axel Huebl <a.huebl@hzdr.de>
Organization: HZDR
Message-ID: <14bb0420-65c6-b753-9207-f49b60939681@hzdr.de>
Date: Fri, 13 Jan 2017 16:19:05 +0100
MIME-Version: 1.0
In-Reply-To: <list-16163712@cg2.fz-rossendorf.de>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit

Hi,

yes that is exactly the profile you are looking for and the right way to
init it. It only varies along y (longitudinally) as you described.

Otherwise: just use FreeFormula.

Cheers,
Axel

On 13.01.2017 16:10, Khikhlukha Danila wrote:
> Dear all,
> this question is a bit basic, however I would like to double check if my
> understanding is correct.
> 
> Using PoG 0.2.1 I want to simulate LWFA in a plasma channel of let say 3
> mm long. I want my gas profile to be uniform in transverse direction. In
> the longitudinal direction I want my gas profile to have a plateau and
> super-gaussain up/down ramps -- exactly how it is specified in
> gasConfig.param file. Am I correct that to achieve it the only thing I
> need to do is to fix numerical values for a length of ramps and plateau
> to fit my overall plasma length?
> Please note that in the speciesIntizialation.param file this profile is
> already pointed a source of particles.
> 
> Thanks a lot for you support,
> Danila.

-- 

Axel Huebl
Phone +49 351 260 3582
https://www.hzdr.de/crp
Computational Radiation Physics
Laser Particle Acceleration Division
Helmholtz-Zentrum Dresden - Rossendorf e.V.

Bautzner Landstrasse 400, 01328 Dresden
POB 510119, D-01314 Dresden
Vorstand: Prof. Dr.Dr.h.c. R. Sauerbrey
          Prof. Dr.Dr.h.c. P. Joehnk
VR 1693 beim Amtsgericht Dresden