题目内容
用中子轰击锂核(36Li)发生核反应,产生氚和α粒子并放出4.8MeV的能量。
(1)写出核反应方程式;
(2)求上述反应中的质量亏损为多少千克(保留两位有效数字);
(3)若中子与锂核是以等大反向的动量相碰,则α粒子和氚的动能之比是多少?
(1)写出核反应方程式;
(2)求上述反应中的质量亏损为多少千克(保留两位有效数字);
(3)若中子与锂核是以等大反向的动量相碰,则α粒子和氚的动能之比是多少?
(1)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558702549.gif)
(2)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558718403.gif)
(3)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558733326.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558702549.gif)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558718403.gif)
(3)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558733326.gif)
(1)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558702549.gif)
(2)![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558796874.gif)
(3)设m1、m2、 v1、v2分别为氦核、氚核的质量和速度,由动量守恒定律得:
0=m1v1+m2v2
氦核、氚核的动能之比:![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558796763.gif)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558702549.gif)
(2)
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558796874.gif)
(3)设m1、m2、 v1、v2分别为氦核、氚核的质量和速度,由动量守恒定律得:
0=m1v1+m2v2
氦核、氚核的动能之比:
![](http://thumb.1010pic.com/pic2/upload/papers/20140824/20140824114558796763.gif)
![](http://thumb2018.1010pic.com/images/loading.gif)
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