Difference between revisions of "Yields and Asymmetry versus Energy Cuts."

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[[File:2n energy correlations vs cuts more.png | 800px]]
 
[[File:2n energy correlations vs cuts more.png | 800px]]
  
That is maybe interesting and I can not enplane at present time. Maybe there are some physics or maybe that is just simple statistical fluctuation. need more investigation.
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That I can not explain at present time. Maybe there are some physics or maybe that is just simple statistical fluctuation. Need more investigation.
  
  

Revision as of 22:24, 15 June 2011

go back


Follow are some Monte Carlo simulations of 2n correlations. One neutron are from one FF, two neutrons per fission. No accidental neutron was considered, all neutrons are correlated. Total 10M events was simulated. Every neutron was sampled up to 10 MeV. The polarization of gammas are zero.


2n Asymmetry versus Energy Cut

It was been shown by Dr Dale that Asymmetry of 2n correlations (anti-parallel/parallel) is the strong function of energy cuts and increases as energy cut increases.

2n energy correlations vs cuts.png

Let's see what happens if we increase the energy cuts

2n energy correlations vs cuts more.png

That I can not explain at present time. Maybe there are some physics or maybe that is just simple statistical fluctuation. Need more investigation.


2n yields vs cuts more.png

The peak is probably due to the energy neutron spectrum


2n counts vs cuts more.png

The peak is probably due to the energy neutron spectrum

Summary table of yields and asymmetry versus energy cuts

Table 2n energy cut yields p01.png

Table 2n energy cut yields p02.png

Because cnts0 becomes really small quantity we need to analyze errors

2n energy correlations error vs cuts more.png

To do more investigation I will need more statistics. But that is problematically at present moment due to the lack of hard disk space:

  • 10 M events is about 1 Gb file.
  • Say I want 100 times more statistics. I will need about 100 Gb free space