Difference between revisions of "Determining the uncertainty of Eγ"

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Line 8: Line 8:
  
 
<math>m_n</math> = 939.565 ± 0.00028 <math>MeV/c^2</math>
 
<math>m_n</math> = 939.565 ± 0.00028 <math>MeV/c^2</math>
 +
 
d = 3 ± 0.005 m
 
d = 3 ± 0.005 m
 +
 
t = 50 ± 1 ns
 
t = 50 ± 1 ns
  
<math>/delta_m</math>
+
<math>\delta_m</math>

Revision as of 08:29, 12 June 2008

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]?

[math]P_n[/math] is determined by time of flight.

Knowns:

[math]m_n[/math] = 939.565 ± 0.00028 [math]MeV/c^2[/math]

d = 3 ± 0.005 m

t = 50 ± 1 ns

[math]\delta_m[/math]