[FLASH-USERS] How to set a dual pulse simultaneously irradiated on a disc target to generate a colliding plasma

[Andy Sha Liao]

Hi Yaoxing,


It looks like you are running this in cylindrical coordinates with 3D in 2D
for the laser beams.

The geometry of the simulation you are setting up is rotated around the
vertical axis of your plot.

As a result, the beam at horizontal position == 0.0 cm has the intended
intensity on target,

but the beam at horizontal position == 0.1 cm has its intensity spread over
an annulus.

To produce your intended geometry, you can either go to full 3D or
2D-cartesian.


Andy

On Tue, Jul 26, 2022 at 8:59 AM Wu, Yaoxing <wu1587 at purdue.edu> wrote:

> Dear FLASH users & developers,
>
>
>
> I am doing some simulations of laser produced plasma. I have a question
> about how to set a dual pulse simultaneously irradiated on a disc target to
> generate a colliding plasma.
>
>
>
> I edit and add another Gaussian Beam2 in the runtime parameter file (.par)
> copied from LaserSlab simulation. The distance between Beam 1 and Beam 2 is
> set to 1000 um.
>
>
>
> All laser parameters of Beam 1 and Beam 2 are same except the incident
> position. But the plasma parameters generated by two beams are not same. I
> have attached the .par file and the electron temperature at 8 ns (The ray
> trace in the picture is 0 ns). I also attached my experimental setup which
> I want to simulate.
>
>
>
> I would appreciate any help.
>
>
>
> Thanks!
>
>
>
> Regards,
>
> --
>
> Yaoxing Wu
>
> Wuhan National Laboratory for Optoelectronics
>
> Huazhong University of Science and Technology
>
> Luoyu Road 1037, Wuhan 430074
>
>
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>
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