1. Emilio Mendoza Cembranos Nuclear Innovation Unit (CIEMAT)
241Am capture with the TAC
Emilio Mendoza Cembranos
Nuclear Innovation Unit (CIEMAT)

2. Dates and protons allocated

3. Alpha-gamma discrimination

4. Alpha-gamma discrimination

5. Energy calibration

6. Energy calibration

7. Energy calibration

8. Time calibration

9. Total energy deposited

10. Total energy deposited
Measurement without absorber to study the PSF’s
Observed peaks in the Activity spectrum: (alpha,Al) reactions?

11. Counting rate
Impurities in the Al2O3 matrix for measuring the background (not in the Am241 measurement) (Sm149?)

12. Counting rate
6000 bins/decade
250MHz
500MHz

13. Counting rate

14. Yield
Some Monte Carlo simulations have been done, without success. They’re needed for the calculation of the efficiency, the beam interception factor and the dead time corrections.
In order to match ENDF-VII.0 data, a [beam factor x efficiency] = constant = 0.13 value has been assumed.
ENDF-VII.0 data transformed in energies like tof_d= m to tof_d= m.
Provisional neutron flux provided by Carlos Guerrero.
2004 resolution function.
No dead time corrections.

15. Yield

16. Yield
Pu240? (1.05)
Np237? (0.49,1.32, 1.48)

17. Yield

18. Yield

19. Yield

20. Yield

21. Yield

22. Yield

23. Yield

24. Yield

25. Yield

26. Yield

27. Yield

28. Yield

29. Yield

30. Comments & conclusions
A more carefully data reduction should be done, but it seems to have a “good quality”.
Extra measurements at 100MHz, with 10us delay were done, in order to reach the thermal point. Some analysis has been tried, without success, at this moment.