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| Christian is a good resource for questions on Gamma W | | Christian is a good resource for questions on Gamma W |
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| 2.) | | 2.)Valeriia's matlab script used to estimate activation times |
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| Valeriia's matlab script used to estimate activation times | |
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| [[Vstar_Matlab_ActTime]] | | [[Vstar_Matlab_ActTime]] |
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| This example was done for Bi-206.
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| %%%%%%%%%%%%%%%%%%
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| clear all;
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| load bics.m % loads cross-section file: first column is energy, second column is c-s in b
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| load flpb.m %loads photon flux file: first column is energy, second column is flux in photons/cm^2 per source electron
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| energy=bics(:, 1);
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| flux=flpb(:, 2);
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| cs=bics(:,2);
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| %% Parameters (target parameters) (need to be entered every time program is compiled)
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| % Below enter target mass in grams;
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| M = 1;
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| % Below enter target average atomic mass in amu;
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| m = 208;
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| % Below enter natural abundance of an isotope of interest;
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| abundance = 0.55;
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| % Below enter a half-life of the isotope of interest in hours:
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| halflife = 6.24*24;
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| % %If you want to know activity after certain time of irradiation, then below enter irradiation time in hours:
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| T = 1;
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| % %If you want to see activity as a function of time, then below enter irradiation time in hours:
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| t = [0:0.1:100];
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| %% Activity calculation is conducted below (don't edit)
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| % Average number of electrons per second is calculated and stored in variable N (for 1 kW of
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| % beam power and 40 MeV electron beam):
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| N = (1 * 10^(-3)) / (40 * 1.6 * 10^(-19));
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| % Photon flux - cross section overlap integral I (in s^-1) is calculated and stored in variable I:
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| I=0;
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| for i=1:length(cs),
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| I=I+flux(i).*cs(i);
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| end
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| I = I*N * 10^(-27);
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| % Total number of the isotope of interest in the target is calculated and stored in variable Tot;
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| Tot = M * abundance / (m * 1.6605 * 10^(-24) );
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| % Production rate (in s^-1) is calculated and stored in variable R:
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| R = Tot * I;
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| % Activity obtained in uCi:
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| A0 = ( R * (1 - exp(-log(2)* T / halflife))) / (37000); %converted from Bq into microCi
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| sprintf('Activity obtained is %g uCi/(%g g kW %g hours)', A0, T)
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| A = ( R * (1 - exp(-log(2)* t / halflife))) / (37000); %converted from Bq into microCi
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| plot(t,A)
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| [[PAA_Research]] | | [[PAA_Research]] |
In Order of preference
1.) Gamma W
Need to check out a USB dive which contains the key needed to run the program.
Can read MPA files saved as *.MP not *.MPA
Christian is a good resource for questions on Gamma W
2.)Valeriia's matlab script used to estimate activation times
Vstar_Matlab_ActTime
PAA_Research