1243_Physics ProblemsTechnical Physics

1243_Physics - 584 Nuclear Structure Section 44.7 P44.45 Nuclear Reactions Q = M 27 Al M M 30 P mn c 2 b g Q = 26.981 539 4.002 603 29.978 314

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584 Nuclear Structure Section 44.7 Nuclear Reactions P44.45 QM M M m c n =+ 27 30 2 Al P α Q = 26 981 539 4 002 603 29 978 314 1 008 665 2 64 .. . u 931.5 MeV u MeV bg P44.46 (a) For X , A −= 24 1 4 21 and Z =+−= 12 0 2 10, so X is 10 21 Ne . (b) A = 235 1 90 2 144 and Z =+−−= 9 203 805 4, so X is 54 144 Xe . (c) A =−= 220 and Z + 2 1 1, so X must be a positron. As it is ejected, so is a neutrino: Xe = + 1 0 and ′= X 0 0 ν . P44.47 (a) 79 197 0 1 79 198 80 198 1 0 Au n Au Hg e * +→ + + (b) Consider adding 79 electrons: 79 197 0 1 2 197 198 196 966 552 1 008 665 197 966 752 7 89 Au atom n Hg atom u 931.5 MeV u MeV 80 198 Au Hg ++ = Q mM c Q n . . P44.48 Neglect recoil of product nucleus, (i.e., do not require momentum conservation for the system of colliding particles). The energy balance gives KK Q emerging incident . To find
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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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