phy-4660/accelerator/notes

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2017-04-28 08:25:56 +00:00
notes:
from program Sim NRA
kinematic factor @ 2.000 ±0.001 MeV
150 degrees
Cu: 1885.05 ± 0.01
Si: 1749.21 ± 0.01
can find a ratio between the lithium and flourine cross-sections
taking the ratio of the yields and cross-sections allows things like target thickness to drop out
what you're after: the yield and the cross-section are basically proportional to each other
in lab write-up
A big danger:
Flourine curve very sensitive to different in energy of about .1, so this could change your ratio greatly
this would be a systematic error that caused an energy shift to explain wrong values