PPT Slide

Angular Momentum transfer

p

p - d

(length)

pt

q

Cosine rule, 2nd order:

q 2 =

(pt /p)2 – (d/p)2

1 – (d/p)

But pt ? R

? ?(?+1) ?

(R = max radius)

So

q 2 ?

?(?+1) ?2 / p2R2

– (d/p)2

1 – (d/p)

or

q ?

const × ?(?+1)

q min

? const × ?

Diffraction structure also expected (cf. Elastics)

PWBA ? spherical Bessel function, q peak ? 1.4 ?(?+1)

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