通过p+^(206)Pb弹性散射提取核半径常数  

Extraction of the nuclear radius constant with p+^(206)Pb elastic scattering

作　　者：胡轶豪 李小华[1] 吴喜军[1] 郑波[1] 代旭之 

机构地区：[1]南华大学核科学技术学院,衡阳421001

出　　处：《四川大学学报（自然科学版）》2013年第6期1285-1288,共4页Journal of Sichuan University(Natural Science Edition)

基　　金：国家自然科学基金(11047157;11205083;11205082);湖南省自然科学基金(10JJ6004);南华大学博士启动项目(2010XQD29;2011XQD28)

摘　　要：高能质子与原子核的散射与光的夫琅禾费衍射在机制上有相似之处,利用核反应弹性散射和光的夫琅禾费圆孔衍射的对应关系能够计算得到核半径,并由此提取出核半径常数.本文以p+206Pb反应为例说明了上述对应关系,建立了利用角分布计算微分截面的模型,在微分截面取极值的条件下利用此模型计算得到核半径,并提取出核半径常数.结果表明,本模型预期的核半径常数与实验经验值符合得很好.The mechanism of the scattering of high energy proton with nuclear is similar with that of Fraunhofer diffraction of circular hole .The extreme value of differential cross section of the former one corresponds to that of light intensity of the latter one .With this relation ,we can determine the nuclear radius and extract the nuclear radius constant .We shown the relation and constructed the calculation method .Employing the method ,we calculate the constant nuclear radius at extreme value of differential cross section .The results obtained by this method are agree with the empirical value well .

关 键 词：核反应 夫琅禾费圆孔衍射 核半径 角分布 

分 类 号：O571[理学—粒子物理与原子核物理]