1290_Physics ProblemsTechnical Physics

1290_Physics ProblemsTechnical Physics - 631 Chapter 46...

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Chapter 46 631 Section 46.7 Making Elementary Particles and Measuring Their Properties *P46.26 (a) pe B r c c ΣΣ ++ == × ×⋅ = 1 602 177 10 1 15 1 99 5344288 10 686 19 22 .. . . C T m kg m s MeV MeV ej af a f bg b g B r c c ππ × = 1 602 177 10 1 15 0 200 MeV 19 22 . C T .580 m kg m s MeV a f b g (b) Let ϕ be the angle made by the neutron’s path with the path of the Σ + at the moment of decay. By conservation of momentum: pc c n cos . cos . . = 199 961 581 64 5 686 075 081 MeV MeV ∴= n cos . 599 989 401 MeV (1) c n sin . sin . . = 199 961 581 64 5 180 482 380 MeV MeV (2) From (1) and (2): c c n =+ = 599 989 401 180 482 380 627 22 MeV MeV MeV (c) Ep c m c π + = + = e j 2 2 2 2 2 199 961 581 139 6 244 MeV MeV MeV c m c nn n = + = 2 2 2 2 2 626 547 022 939 6 1130 MeV MeV MeV EEE n Σ = + = 243 870 445 1129 340 219 1 370 MeV MeV MeV (d) mc E Σ + =− = = 2 1 373 210 664 686 075 081
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This note was uploaded on 12/15/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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