Difference between revisions of "Cos(Theta) between two correlated neutrons. Unpolarized case."
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+ | Even for the case above (without energy cut) the asymmetry between neutrons emitted anti-parallel and parallel is large and about . | ||
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+ | But let's do the energy cut. | ||
[[File:Cos theta 2n correlated energy cut.png | 700 px]] | [[File:Cos theta 2n correlated energy cut.png | 700 px]] |
Revision as of 17:48, 10 June 2011
Below is the energy spectrum of two correlated neutrons in LAB frame.
- 10 million events total
- Sampled up to 10 MeV.
Below is
between two correlated neutrons. Integrated over all energy spectrum without any energy cut.
Even for the case above (without energy cut) the asymmetry between neutrons emitted anti-parallel and parallel is large and about .
But let's do the energy cut.
The calculated asymmetry from the last plot is:
here:
- are all events with angle between two neutrons is
- are all events with angle between two neutrons is
That angles correspond to 90 cm long detector located about 2 m away from target. That is good for time of flight technique.
The yields are:
Looks good, but we need big statistics!