Description
How to calculate the half life and activity of the scandium radioisotopes from the given the sum.lis and tab.lis
input_80_sum.lis (9.2 KB)
input_80_tab.lis (15.5 KB)
The half life does not need to be calculated, can be found everywhere, for instance launching Flair and looking at the Elements tab, where you can click on the desired element.
As for the activity at a pre-defined cooling time, you need to associate the RESNUCLEi detector to the latter by means of the DCYSCORE card. What you obtained in the uploaded files appears to be the nucleus production yields, and seems to indicate that you have an alpha particle beam that stopped in the scoring region.
Thanks for the reply. My aim here is to produce the Sc44 and Sc43 radioisotopes through the interaction of protons and alpha particles with calcium targets (Ca44 and Ca40, respectively). So i primararily i need to calculate the the yield of Sc43 and Sc44 which i could do by USRBDX card. However how to calculate the activity for different time steps. I have added DCYSCORE but i dont get output for different time steps. rather only for 1 time steps. (Attached the input and output file).
So how to calculate the detection efficiency , inturn to calculate the acitvity. and the yield of the Sc43 and Sc44.
So i need to plot the similar figure as given below for different cooling period and calcute the yield and activity.
input_80_tab.lis (13.1 KB)
input_80_sum.lis (9.0 KB)
input.flair (7.7 KB)
This will only intercept the radionuclides possibly leaving the target, while RESNUCLE (without DCYSCORE association to a cooling time, as in the .lis files you uploaded) gives you the yield of the radionuclides stopping in the scoring region.
As for the exponential decay of their activity, you do not really need to simulate it.
Anyway, in your input the multiple DCYSCORE cards are overwriting each other, hence you eventually get the activity at the last cooling time only. If you want to get activities at each cooling time, you need multiple RESNUCLE cards as well, with the respective DCYSCORE card making the specific association to one cooling time only.
Dear Cerutti,
Thanks for the reply. Attached is the input and corresponding output file. I am aware that resnuclei without dcyscore gives the yield.
My doubt is about the activity and how to calculate it and plot the above graph attached.
I have made the new input deck as you said and got the desired output as attached.
Is it like just plotting the decay time and yield of Sc-44 . If so how to calculate the detector efficiency to calculate the activity?
input.flair (4.6 KB)
input_80_tab.lis (21.5 KB)
input_80_sum.lis (16.5 KB)
right
The simulation gives you the radionuclide yield and consequently its activity inside your calcium target. Which detector are you talking about? If you want to calculate a detector efficiency, you need to score the decay gammas in the detector region.
But note that, while in real life you need the detector efficiency to estimate the activity, in the simulation you directly get the ‘true’ activity in the target.
Ok i understand your point now. I could able to calculate the activity directly. I was talking about the gamma ray detector as they use that originally in the experiment.