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1.
用B-splines技术将波函数在径向和角向同时展开,考虑两核之间的相互作用,计算超强外磁场中,氢分子离子基态(m=0)和低激发态(m=-1,-2,-3,-4)的能级与两核间距离的关系,计算结果在2.35×10^6→2.35×10^8T整个区域比绝热近似结果的精度提高0.01到0.02.  相似文献   

2.
考虑两核之间的相互作用,采用单中心展开方法,用B-splines基函数将氢分子离子的波函数在径向和角向同时展开,计算超强平行外磁场中氢分子离子的能级与磁场强度的关系,两核间的平衡距离随磁场变化规律.计算结果表明:磁量子数-m越大,R——γ曲线下降越快,氢分子离子越容易被压缩;磁场越强,塞曼能级也就越低,当磁场γ大于500时,R——γ曲线近似为直线。  相似文献   

3.
研究了任意能级下均匀磁场中三维谐振子一级能量修正值的简便方法.根据简并态微扰理论、球坐标系中三维谐振子波函数的性质,以及均匀磁场中三维各向同性谐振子微扰矩阵元的普遍表达式,得到了均匀磁场中三维谐振子一级能量修正值的计算方法.计算了n=5能级的能量一级修正值,给出了均匀磁场中三维谐振子一级能量修正值的解析式.  相似文献   

4.
众所周知,地球是一个大磁体,它周围空间存在的磁场叫地磁场,在地面附近的磁感应强度大约是0.3×10-4T~0.7×10-4T.而一般永磁体附近的磁感应强度大约为10-3T~1T,可见地磁场并不强.地球的磁场与条形磁体的磁场场相似,其主要特点有三个:  相似文献   

5.
任何物质都有或强或弱的磁性,生物体也不例处,一般生物体都具有弱磁性。另外,生物体的生理活动还产生磁场,这些生物磁场非常微弱。例如,正常人的心脏跳动产生的心磁场为10-10T;脑的神经活动产生的脑磁场约5×10-13T。它们远比地面附近的地磁场(约5×10-5T)低得多。但由于磁测量技术的发展,这些微弱的生物磁场能够测量出来,对于研究生物的生命活动很有意义。  相似文献   

6.
通过求解能量本征方程,得到弱磁场作用下的二维势阱中电子的本征能量及其波函数,进而以基态和第一激发态波函数构造了一个量子比特.数值计算结果表明,量子比特内电子的空间概率密度随空间坐标和时间的变化而变化,在阱的边缘处出现的概率值为零,在其他位置相对较大;各个空间点的概率密度均随时间做周期振荡,振荡周期与阱宽有关,与外磁场无关,它随阱宽的增加而增大.  相似文献   

7.
杨斌斌  王宗谟 《物理教师》2010,31(8):26-26,28
在中学原子物理的教学.中,大家知道,基态氢原子的能级是-13.6eV,激发态最低能级是-3.4eV,较高能级依次为-1.51eV、-0.85eV…….所以要让基态氢原子跃迁到激发态,至少吸收-3.4eV-(-13.6eV):10.2eV的光子,然后是12.09eV、12.75eV……等数值分立的特定能量的光子.那么,能量不等于10.2eV但接近于10.2eV的光子,(例如能量为10.1eV或10.3eV的光子)能否被基态氢原子吸收而跃迁呢?按中学生习惯常回答“能”或“不能”.  相似文献   

8.
基于简并微扰论和Mathematica软件平台,发展了一种简单可靠、全自动的计算方法研究磁场中的原子能级结构.考虑自旋磁矩和感生磁矩,计算了处在较强磁场中氢原子n=2~7的能级和波函数.讨论了简并微扰论的适用条件和能级分裂,绘制了概率角分布图和电子云图.数值结果表明:对于较强磁场,本方法是可靠和快捷的;一般情况下,磁场对能级的一级修正可以使简并完全解除(n=2~7),但在一定条件下,会出现新的简并——偶然简并.  相似文献   

9.
在用变分法研究氦原子基态能量和波函数过程中,放弃选用两个相同类氢原子基态波函数乘积作为氦原子基态尝试波函数的方法,而是选取三参数的尝试波函数对氦原子体系的非相对论基态能量进行了数值计算,计算结果与实验值相当接近.  相似文献   

10.
在高中<物理>第三册(必修加选修)第58页习题A组中有一道习题,题目的内容为: 题目有一个电子与一个基态氢原子碰撞,刚好使这个氢原子电离,这个电子的动能是多少? 在配套的<教师教学用书>中对该题的解答过程是这样的:如果电离后氢原子的能量记为零,则基态氢原子的能量为-13.6eV,能量差为13.6eV.基态氢原子必须获得这么大的能量才能电离.即与它碰撞的电子的动能为13.6eV,或2.18×10-18J.  相似文献   

11.
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity.  相似文献   

12.
风的曲线     
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose.  相似文献   

13.
汉字倒说     
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。  相似文献   

14.
Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F.  相似文献   

15.
《海外英语》2007,(5):44-45
It is worthy of noting that, whilst Crookston Castle witnessed the earlier and happier portion of Mary's variegated life,  相似文献   

16.
一、吃和喝吃苹果 eat an apple, 吃药 take medicine,吃糖 have some sweets,吃饭 have one's meals,吃馆子 dine out,吃惊 be surprised/  相似文献   

17.
《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help?  相似文献   

18.
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language.  相似文献   

19.
钱生钱!     
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了  相似文献   

20.
《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love.  相似文献   

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