卢瑟福背散射分析

1、 RBS2011212200111.了解RBS2.通过对选RBSRBS实验装置1.加速器（一2.靶室（离子3.背散射离子4.放射源RBSEH茁冥剜储血i!儿咕棒tf|：Yt亍圭阳亂需吋押川J锻丄迪h科脯歸|砂于詆单蚩恣才舉9郭粽占菲柳c临吉旳典界辟聊讣机强黏止憨囲 # 质子、（粒子或其他重离子（约10ev量级）90度）离子的能量分布（能量（一般100kevE1Mev）1）运动学因子和质量分辨率K=Ei/EoEoEi3 EiE01-msin212mcos2MM1mM3 #3 #E03 #E1MMMdMdE1dME-id(E)0E(d)1()1EvdM70RBSMEdkE(dM)1ERBS0，MM

2、MRBSRBSEm3 dNatoms/cm2ANtQA，dQ为(atoms/cm3)，td11dNtQdQ&于Z2V1灵敏度高于EoM接近180度等方法提高质量分2)散射截面和探测灵敏度QNt()丄JddNtRBS分析灵敏度：由卢Z22E23 #3 #dEdlimE0RBS E=kE0 x/cosE=Sx(E)=EE)x+cos1Li+67mm1)Si1xcos1RBScos2E0=4.05MeVx/cosx-0 x2xcost2150RBS4mmGeSi2W WSiW道数860869718697值计数436213481232GeGeSi道数676692624608值计数35417337619

3、2AlCrAl道数334344值计数97551RBS:KSi=0.385KGe=0.697，KW=0.867KAl=0.371，K=0.603SiCrGe、 # #E=3.822channel)+185.4122)SiWLi2+4.05MeV=150o，W183.85E=Sx=E/SS=12.29g/cm3EW #869和697KzE=3.822869+185.412=3605.73KeVE“=E/Kw=4044.67KeVW00WE=3.822697+185.412=2849.35KeV,E=K-E=657.38KeV1W01Ein=E=E04E=3880J2KeVE=E+1out14E=3

4、013.70KeV3000KeV4000KeVWEEinout # #(E)=688KeV*cm2/mgW(E)=700KeV*cm2/mgout # #(E)=688xl000 xi83.85xl000/6.02xl023=210.11xl0-i5eV*cm2(E)=700 x1000 xi83.85x1000/6.02x1023=212.82x10-i5eV*cm2outN=19.29g/cm3x6.02x1023mol-1/183.85g/mol=6.32x1022cm-3S=Ncos1=N=270.42eV/Acos2=0=150o12x=E/S=657.38x1000/270.42=

5、2430.96AW2430.96Al SIGE阻止截面W阻止截面KEVKeV*cm2/mgKeV*cm2/mgKeV*cm2/mg10002293.91016.8556.39111002298.21041.8577.49812002294.11061.759621079.2612.58714002282.91095.8626.9615002273.81109.2639.54616002261.91119.9650.54517002249.31128.6660.154180022561146.6668.37120002257.71174.2681.42722002247.41192.5692.47824002231.31205.1698.85426002212.61214.1701.7528002188.11217.9701.76130002159.51217.7699.78533002112.11211.6696.11736002072