Dear professor,
I have one question. I follow this post and get the same result of abundance like you. But it seems that the final abundance includes many unstable nuclei. Do we need a step to let these nuclei to decay into stable nuclei? Can this been done in the NucNet or need other subroutine?
Thanks a lot, I learn a lot from your posts.
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Thanks for your post. To follow decays at the end of a calculation, you can change the end time (tend) to a longer time to allow the decay to occur. Alternatively, you can use the nuclear decay project:
Of course, in either case, your input data file will have to have all the relevant decays. For example, you will want to be sure you have all the alpha decays in the actinide region. You might have to add those decays, as in this post.
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Anonymous
Anonymous
-
2018-11-15
Thank you very much for the reply.
Actually, I have tried a very long time (1.e18 s), but it seems doesn't change much in the final abundance(I compare the data, most of them are the same, only few changes a little). Still, there are many unstable nuclei.
Does this mean that the JINA-Reaclib data doesn't include the beta decays and the alpha decays you mention above?
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Anonymous
Anonymous
-
2018-11-16
Dear professor,
Maybe I have figure out the problem, I address it below and you can see if I am right or wrong.
As in the r process calculation, I set the xpath as "[z<=90]", the network doesn't include the nuclei with z>90, so the unstable nuclei with z=90 can't decay into z=91 nuclei by beta decay. So when I check the final abundance, the nuclei with z=90 doesn't changed much with different time.
Thank you very much.
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Yes, that is correct. Decaying nuclei will pile up at Z = 90 if that is the limit. You might also try an xpath expression with something like "[a <= 293]".
As for decays in the JINA data base, there may be some alpha decays in the actinide region not present. You can try updating from the JINA web site or by using the jina_to_webnucleo project.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Anonymous
Anonymous
-
2018-11-16
Thank you very much for the reply.
If you would like to refer to this comment somewhere else in this project, copy and paste the following link:
Move from here:
Dear professor,
I have one question. I follow this post and get the same result of abundance like you. But it seems that the final abundance includes many unstable nuclei. Do we need a step to let these nuclei to decay into stable nuclei? Can this been done in the NucNet or need other subroutine?
Thanks a lot, I learn a lot from your posts.
Thanks for your post. To follow decays at the end of a calculation, you can change the end time (tend) to a longer time to allow the decay to occur. Alternatively, you can use the nuclear decay project:
https://sourceforge.net/p/nucnet-projects/wiki/nuclear_decay/
Of course, in either case, your input data file will have to have all the relevant decays. For example, you will want to be sure you have all the alpha decays in the actinide region. You might have to add those decays, as in this post.
Thank you very much for the reply.
Actually, I have tried a very long time (1.e18 s), but it seems doesn't change much in the final abundance(I compare the data, most of them are the same, only few changes a little). Still, there are many unstable nuclei.
Does this mean that the JINA-Reaclib data doesn't include the beta decays and the alpha decays you mention above?
Dear professor,
Maybe I have figure out the problem, I address it below and you can see if I am right or wrong.
As in the r process calculation, I set the xpath as "[z<=90]", the network doesn't include the nuclei with z>90, so the unstable nuclei with z=90 can't decay into z=91 nuclei by beta decay. So when I check the final abundance, the nuclei with z=90 doesn't changed much with different time.
Thank you very much.
Yes, that is correct. Decaying nuclei will pile up at Z = 90 if that is the limit. You might also try an xpath expression with something like "[a <= 293]".
As for decays in the JINA data base, there may be some alpha decays in the actinide region not present. You can try updating from the JINA web site or by using the jina_to_webnucleo project.
Thank you very much for the reply.