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对在一维有限深势阱中运动的粒子，各类书籍都只给出了确定其处于束缚态时能级的方程，并未给出它们的归一化波函数．本完整地求出了一维有限深对称和不对称势阱中的归一化波函数，所得结果在势趋于无穷大时与无限深势阱中的波函数完全一致． 相似文献
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先从定态薛定谔方程求解出一维无限深方势阱的能级公式及波函数,再从一维半无限高方势阱的能级图解图导出一维无限深方势阱的能级公式,说明一维无限深方势阱的能级确实是一维半无限高方势阱的能级在特定条件下的极限。最后还对一维半无限高方势阱的能级数目进行了讨论,并给出了相应的判别公式。 相似文献
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一维无限深势阱模型是量子力学中重要的问题之一,使用坐标一动量不确定度关系和算符理论分别证明了能量E大于0,并时该模型中的定态波函数、物理量量子化、能级间隔、零点能、坐标一动量不确定度关系以及一维无限深势阱模型成立的条件作了进一步的讨论. 相似文献
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本文通过对自由粒子系统和一线无限深势阱中粒子系统各种性质的比较,论证计算一维无限深势阱内粒子的动量分布的两种方法中,泡利方法是正确的,朗道方法是不对的。并由改进后的朗道方法求出了泡利正确的结果。 相似文献
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给出了一维高低不对称方势阱中束缚态粒子的能级的数值解法和归一化波函数，所得结果在势趋于无穷大时与无限深势阱的结果一致。 相似文献
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《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
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罗艳萍 《读与写:教育教学刊》2008,5(6)
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
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《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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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
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
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献
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RUZBEHANI Mohsen 《重庆大学学报(英文版)》2004,3(1):20-25
1.IntroductionOne-cyclecontrolmethod,whichwasproposedaboutonedecadeago[1],hasbecomeanattractivemethodinspecialfieldssuchaspowerfactorcorrection[2-6],switchingamplifiers[7,8],etc.Themainideaofthiscontrollerisbasedonintegrationofdiodevoltageinone-cycleandforcesittobeexactlyequaltothereferencevalue.Themainadvantageofthiscontrollerisitsrealtimeabilitytorejectthevariationofinputvoltage[1].Despitethisgreatability,ithasnogoodperformancesinrejectingofloaddisturbanceandfollowingreferencecommands.Espec… 相似文献