ADDA questions and answers

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Discussions about the ADDA code. Anyone can post his question here (sending an e-mail to adda-discuss@googlegroups.com), and the developers will try to answer it. ADDA users are encouraged to join this group (either through web-interface or sending any e-mail to adda-discuss+subscribe@googlegroups.com) and participate in discussion.

Mind, however, that if you're not a member of the group and post your question by e-mail, the answer will be posted to the group (including this site) but will not be automatically forwarded to your e-mail.

All messages from not yet approved e-mail addresses (either non-members or newly joined members) are moderated. However, there is also a huge mass of spam that is automatically filtered by Google - this filter has a minor probability of catching legitimate messages (we usually do not manually check the spam folder). So if your message does not appear online (at this site) two days after submission, please notify Maxim Yurkin (yurkin@gmail.com) directly. Once your first message is approved, you should be able to post new messages without moderation.

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Hau T, Maxim Yurkin8

May 1

Circular dichroism (CD) spectra simulation

One more update about circular polarizations. They can be directly obtained from current version of

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Circular dichroism (CD) spectra simulation

One more update about circular polarizations. They can be directly obtained from current version of

May 1

Kevin Aptowicz, Maxim Yurkin4

Apr 25

adda_mpi on Ubuntu

Great, thanks for your update. Indeed, mismatch between MPI packages (implementations) at compilation

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adda_mpi on Ubuntu

Great, thanks for your update. Indeed, mismatch between MPI packages (implementations) at compilation

Apr 25

Ismail Ibrahim, Alexander Kichigin3

10/30/23

Hello all, I have attached an image with the result but Alexanders solution worked! Thank you very

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Hello all, I have attached an image with the result but Alexanders solution worked! Thank you very

10/30/23

Ismail Ibrahim, Maxim Yurkin3

10/27/23

Residual norm error

Not sure to reply all or start a new thread but I wanted to ask another question relating to residual

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Residual norm error

Not sure to reply all or start a new thread but I wanted to ask another question relating to residual

10/27/23

10/5/23

rapid DDA simulations for multiple values of refractive index

Dear colleagues, Let me bring your attention to the work in progress, which can accelerate many

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rapid DDA simulations for multiple values of refractive index

Dear colleagues, Let me bring your attention to the work in progress, which can accelerate many

10/5/23

Junum, … Claudia M10

9/26/23

Q about orientation average for large simulation

Hello, Amazing, thank you! This is much simpler than anticipated. Thanks again, Claudia Morello On

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Q about orientation average for large simulation

Hello, Amazing, thank you! This is much simpler than anticipated. Thanks again, Claudia Morello On

9/26/23

Zhibo Zhang, Maxim Yurkin2

9/19/23

order of the dipole coordinates

Dear Zhibo, ADDA will accept any order of dipoles and the results must be the same. While producing

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order of the dipole coordinates

Dear Zhibo, ADDA will accept any order of dipoles and the results must be the same. While producing

9/19/23

9/10/23

review chapter on the DDA

Dear colleagues, When using ADDA, a general understanding of the underlying method (the DDA)

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review chapter on the DDA

Dear colleagues, When using ADDA, a general understanding of the underlying method (the DDA)

9/10/23

Ismail Ibrahim, Maxim Yurkin7

9/4/23

Dear Dr. Yurkin, Thank you very much for the explanation. I am mostly glad nothing is wrong with the

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Dear Dr. Yurkin, Thank you very much for the explanation. I am mostly glad nothing is wrong with the

9/4/23

Claudia M, Maxim Yurkin6

8/30/23

Hello, Ah okay that makes sense! The differences are smaller than the threshold. I won't worry

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Hello, Ah okay that makes sense! The differences are smaller than the threshold. I won't worry

8/30/23

Penttilä, Antti I, Maxim Yurkin2

8/11/23

Some command-line tools for ADDA geometries

Dear Antti, Thanks a lot for sharing your tools. I have added links to them at https://github.com/

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Some command-line tools for ADDA geometries

Dear Antti, Thanks a lot for sharing your tools. I have added links to them at https://github.com/

8/11/23

yali ren, Maxim Yurkin2

7/2/23

Can a Laguerre Gaussian beam be used as an incident beam in ADDA?

Dear Yali, This is a current limitation of the ADDA GUI (your use case seems to be too complicated

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Can a Laguerre Gaussian beam be used as an incident beam in ADDA?

Dear Yali, This is a current limitation of the ADDA GUI (your use case seems to be too complicated

7/2/23

Claudia M, Maxim Yurkin3

6/9/23

Orientation Averaging Log Definitions

Hello, Thanks so much for the clarification! That gives me a lot to work with! Thanks, Claudia

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Orientation Averaging Log Definitions

Hello, Thanks so much for the clarification! That gives me a lot to work with! Thanks, Claudia

6/9/23

3/25/23

several recent papers

I would like to draw your attention to our recent papers, which either highlight new ADDA features (

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several recent papers

I would like to draw your attention to our recent papers, which either highlight new ADDA features (

3/25/23

Zhibo Zhang, Maxim Yurkin2

3/15/23

How to get the physical projection area of the particle for each orientation?

Dear Zhibo, As mentioned in Section 11.4 "Integral scattering quantities" of the manual,

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How to get the physical projection area of the particle for each orientation?

Dear Zhibo, As mentioned in Section 11.4 "Integral scattering quantities" of the manual,

3/15/23

Tajim Rahman, Maxim Yurkin2

2/8/23

Propagation direction and incidence reference frame

Dear Tajim, Welcome to the discussion group. Here are the answers: > 1. If my light source is

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Propagation direction and incidence reference frame

Dear Tajim, Welcome to the discussion group. Here are the answers: > 1. If my light source is

2/8/23

zen vivi, Maxim Yurkin2

12/12/22

Dear Dr. Wei, Try executing "cd seq" before running ADDA, since the binary file is located

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Dear Dr. Wei, Try executing "cd seq" before running ADDA, since the binary file is located

12/12/22

Golova, A.M. (Anna), … Alexander Kichigin6

9/9/22

Predicting shape using ADDA

Instead of "I recommend using Python" I was trying to say "I recommend using Spyder

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Predicting shape using ADDA

Instead of "I recommend using Python" I was trying to say "I recommend using Spyder

9/9/22

Ma Chunyang, Maxim Yurkin2

8/7/22

Internal electric fields plot

Dear Chunyang, I recommend to read the following discussion - https://groups.google.com/g/adda-

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Internal electric fields plot

Dear Chunyang, I recommend to read the following discussion - https://groups.google.com/g/adda-

8/7/22

Padryk Merkl, Maxim Yurkin2

7/4/22

Cannot replicate spectrum in version 1.4

Dear Padryk, I believe the problem is that this script uses small dpl for such small sizes (much

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Cannot replicate spectrum in version 1.4

Dear Padryk, I believe the problem is that this script uses small dpl for such small sizes (much

7/4/22

Claudia M, Maxim Yurkin3

6/22/22

ADDA Parallelization Scaling

Hello, Thanks so much for your quick response! That is all good to know and would explain a couple

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ADDA Parallelization Scaling

Hello, Thanks so much for your quick response! That is all good to know and would explain a couple

6/22/22

Hamzah Khan, Alexander Kichigin4

5/6/22

Adda save files

Specifying the "-dir /path/to/folder/" in your Matlab code is necessary to know the path to

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Adda save files

Specifying the "-dir /path/to/folder/" in your Matlab code is necessary to know the path to

5/6/22

Robert Lewis [Student-PECS], Maxim Yurkin2

4/27/22

Dear Rob, Yes, ADDA can do it. Take a look at -store_scat_grid command line option and file

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Dear Rob, Yes, ADDA can do it. Take a look at -store_scat_grid command line option and file

4/27/22

Hamzah Khan, Maxim Yurkin2

3/28/22

Difference between size and grid

Dear Hamzah, -grid is an integer (dimensionless), which specifies the number of dipoles along the x-

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Difference between size and grid

Dear Hamzah, -grid is an integer (dimensionless), which specifies the number of dipoles along the x-

3/28/22

Raju Lampande(2004-2006), … Alexander Kichigin9

3/18/22

Regarding structure ploting

Dear Hamzah, you can try using my python script for visualization. I'm providing an example in

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Regarding structure ploting

Dear Hamzah, you can try using my python script for visualization. I'm providing an example in

3/18/22

Claudia M, Maxim Yurkin3

3/2/22

Shape Reading and Orientation Averaging

Hello, Thanks for your quick response! That is very helpful to know for when I make more complicated

unread,

Shape Reading and Orientation Averaging

Hello, Thanks for your quick response! That is very helpful to know for when I make more complicated

3/2/22

Hamzah Khan, Maxim Yurkin2

2/28/22

simulation of a moving particle in a diode laser

Dear Hamzah, > Thank you for answering my previous questions . I want to ask you that I have to

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simulation of a moving particle in a diode laser

Dear Hamzah, > Thank you for answering my previous questions . I want to ask you that I have to

2/28/22

2/21/22

Re: ERROR: Shape type 'patchparticle' is not supported

Dear Hamzah, I cannot tell exactly, since I do not see your code. But I guess, the problem is with

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Re: ERROR: Shape type 'patchparticle' is not supported

Dear Hamzah, I cannot tell exactly, since I do not see your code. But I guess, the problem is with

2/21/22

Sophia Leippe, Maxim Yurkin2

2/18/22

two incident beams possible?

Dear Sophia, If the wavelengths of the two beams are different, they must be considered separately,

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two incident beams possible?

Dear Sophia, If the wavelengths of the two beams are different, they must be considered separately,

2/18/22

Hamzah Khan, Maxim Yurkin2

2/16/22

Loading data from "CrossSec-Y "using command line adda

Dear Hamzah, ADDA just produces these files, you can use any text editor to open them and extract the

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Loading data from "CrossSec-Y "using command line adda

Dear Hamzah, ADDA just produces these files, you can use any text editor to open them and extract the

2/16/22

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