CH 39 #14 - 39.14: Intensity maxima occur when d sin m. h h...

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39.14: Intensity maxima occur when . λ sin m θ d = . ME mh θ d ME h p h 2 sin so 2 λ = = = (Careful! Here, m is the order of the maxima, whereas M is the mass of the incoming particle.) a) ) 6 . 60 sin( ) V e J 10 60 . 1 ( ) eV 188 ( ) kg 10 11 . 9 ( 2 s) J 10 63 . 6 ( ) 2 ( sin 2 19 31 34 ° × × × = = - - - θ ME mh d nm. 206 . 0 m 10 06 . 2 10 = × = - b) m = 1 also gives a maximum. one. other only the is This . 8 . 25 m) 10 06 . 2 ( ) V e J 10 60 . 1 ( ) eV 188 ( ) kg 10 11 . 9 ( 2 ) s J 10 63 . 6 ( ) 1 ( arcsin 10 19 31 34 ° = × × × × = - - - - θ If we let , 3 m then there are no more maxima.
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