2014南京航空航天大学考研真题之核辐射物理学.pdf
S “ S “ : :2t bt?v M V 3 I k k k5 “ S “ : S “ : s : s i s5 i Y sAs5 k5 (r k5 s5B k5 Bae1s/ 5l5 5s 50s 1a1 X b v$ M $ 2a19O14O ( Mb F -M +M$ I $3a0 X L M1 $ 4aKv09“ y0 Ti y0clb 5a I 5 X $ 6a T 41 LG I $ T 1L I $ 7a M + T$ k MVVr Tb 8aQV t o pAN o$e1 1b 9a I Q $ il I $ 10ae1 Q m# 1Qb =a45/ %s 1a eHeH +332a eSCl +34163417(Cl3417 1 0+) 5 20s a 0Y sec./1027cm= MgpnAl2727),(Q 327Mg b t1/2=10.2sbQ 1cm 25cm2 v v HWv 5t1/2 ,Tv 20.4sb 1.1310-2 pQ b X27Al =2.7g/cm3 5 20s S “ S “ : :av T 00sY1 TbX0 T ?)12 32 12 52 12 32 72 32 52 12 92 72 52 112 32 1211 1 1 1 1 1 1 1 1 3/ / / / / / /sppdsdf p f p ggdh ds0 T 12 32 12 52 12 32 72 32 52 12 92 52 72 12 32 11211 1 1 1 1 1 1 1 3 2 1/ / / / / / /sppdsdf p f p g d g sdh 00 ?) k / 1 56 68 27 67 14 13826 30 13 30 7 57Fe, Zn, Al, Zn, N, La ( 810 I n1 r ) 5 20sa XiN d C 9 Q .87+BeLip MeVEp44.0= HC pBe8? ?) ? b ( 1 1 7 289 3 7 14 908 4 8 4 942(,) . (, ) . ,(,) .= = = MeV) 5 20s Ba k 0 0TKB00 Ne22 ?b ( 10 21 5 732 10 22 8 024 0 1 8 0714(,) . ,(,) . ,(,) . MeV= 8 18 0 782 2 4 2 425(, ) . ,(,) . MeV= ) 5 20s