Determining the uncertainty of Eγ: Difference between revisions
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To determine the uncertainty in Eγ we pick an angle for the neutron within [<math>\theta_n</math>, <math>\theta_n</math> + Δ <math>\theta_n</math>] and a momentum of the neutron between [<math>P_n</math>, <math>P_n</math> + Δ <math>P_n</math>]. | To determine the uncertainty in Eγ we pick an angle for the neutron within [<math>\theta_n</math>, <math>\theta_n</math> + Δ <math>\theta_n</math>] and a momentum of the neutron between [<math>P_n</math>, <math>P_n</math> + Δ <math>P_n</math>]. | ||
What are reasonable Δ<math>\theta_n</math> and Δ <math>P_n</math>? | What are reasonable Δ<math>\theta_n</math> and Δ <math>P_n</math>? | ||
<math>P_n</math> is determined by time of flight. | |||
Knowns: | |||
<math>m_n</math> = 939.565 ± 2.8x<math>10^-4</math> <math>MeV/c^2</math> | |||
Revision as of 08:24, 12 June 2008
To determine the uncertainty in Eγ we pick an angle for the neutron within [[math]\displaystyle{ \theta_n }[/math], [math]\displaystyle{ \theta_n }[/math] + Δ [math]\displaystyle{ \theta_n }[/math]] and a momentum of the neutron between [[math]\displaystyle{ P_n }[/math], [math]\displaystyle{ P_n }[/math] + Δ [math]\displaystyle{ P_n }[/math]].
What are reasonable Δ[math]\displaystyle{ \theta_n }[/math] and Δ [math]\displaystyle{ P_n }[/math]?
[math]\displaystyle{ P_n }[/math] is determined by time of flight.
Knowns:
[math]\displaystyle{ m_n }[/math] = 939.565 ± 2.8x[math]\displaystyle{ 10^-4 }[/math] [math]\displaystyle{ MeV/c^2 }[/math]