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wavingerwin
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Homework Statement
Parallel beam of "cold" neutrons in the x-axis, with energy 0.1eV strikes a slit system in y-z plane.
Slits are parallel to the y-axis 1 micron apart. What will be the distance between the detector at x=20m which records the highest flux of neutrons, and the closest one to it that records nearly zero flux?
Homework Equations
lambda = h/p
f = E/h
The Attempt at a Solution
I tried to find lambda
going with
lambda = h/p
p = gamma*m*v
v = c*(1-(K/mc2+1)-2)0.5
with K = 0.1eV = 1.602e-20 Joules
m = 1.675e-27
I found v=0... since K2/mc2 << 1
What am I doing wrong?
Please help...
Thank you in advance