| 1. | Wavepacket ; timedependent ; potential energy surface ; reaction cross section ; reaction rate constant ; ozone 波包含时势能面反应截面反应速率臭氧 |
| 2. | Both the reaction and nucleon removal cross section are derived with or without considering the meson production , and the relevant expressions are given 讨论了有和无介子产生两种情况下的晕核散射反应截面和核子逃逸截面,给出了相应的计算公式。 |
| 3. | Due to the repulsive coulomb field , the effective impact parameter increases , and therefore the calculated reaction cross section decreases 库仑场的排斥效应使得核?核反应有效的碰撞参数增大,使计算的反应截面减小,同时这种修正的效应随能量增大而减小。 |
| 4. | This dissertation has two primary part , one part discussed the significance and produce of rnb , and introduced hi - 13 tandem accelerator of china institute of atomic energy ( ciae ) 第二部分介绍了8li次级束的产生及2h ( 8li , 9be ) n反应截面的测量。利用44mev的7li初级束轰击气压为1 |
| 5. | All kinds of cross sections and energy - angular distribution of outgoing neutrons of the reaction n + 10b with incidence energy less than or equal to 20mev are calculated . the comparisons of total outgoing neutron with the measured experimental data indicate that the model calculations are successful 利用这一新理论,对中子能量小于20mev的n + 10b反应的所有反应截面,出射中子的双微分截面进行了计算,并进行了物理分析。 |
| 6. | D hcl reaction has been carried out employing the blrs potential energy surface r schinke . j chem phys , 1980 , 80 : 55105517 . the calculated cross section values are close to the quasiclassical trajectory results and the rate constants are in excellent agreement with experimental results D hcl反应进行了精确的三维含时量子波包计算。反应截面的计算结果与经典轨线结果符合得很好,反应速率的计算结果与实验结果也符合得非常好。 |
| 7. | Since in the few - body glauber theory the core and valence nucleons of a halo nucleus are treated separately , the obtained expressions of the reaction cross section , the nucleon removal cross section and the momentum distribution are all involved in multidimensional integrations 由于在少体近似glauber模型中晕核被分成核芯和晕核子来处理,所以得到的晕中国原子能科学研究院博士学位论文核散射反应截面、核子逃逸截面以及动量分布的计算公式均包含高重积分。 |
| 8. | Therefore we could carry out numerical calculations and obtain the reaction cross section , the nucleon removal cross section and the momentum distribution in the scattering of a halo nucleus with any types of density distributions . we compare the reaction cross sections calculated in the few - body glauber theory and the optical - limit glauber theory 进一步对27p 、 28p反应截面的研究分析表明,考虑核芯2751的增大可以很好解释实验测量得到28p反应截面的增大,而要解释27p反应截面的异常增大,需要同时考虑核芯2 “ si增大和具有非常弥散空间分布的2s , , :态晕核子。 |
| 9. | We give a mathematical proof for the model - approximately independence of anc coefficient . combining a concrete nuclear reaction , we check up the model - approximately independence of anc coefficient with numeric calculation . under the el transition condition , a expressions with anc coefficient to compute the cross section of radiative capture reaction has been given in this thesis 我们对anc系数的近似模型无关性给出了一个数学形式理论证明,并结合具体的核反应,利用数值计算验证了anc系数的近似模型无关性;在e1跃迁情况下,我们给出了一个用anc系数计算辐射俘获反应截面的计算公式。 |
| 10. | It includes three steps : first , the experimental data in exfor format is evaluated . then , the optical potential parameters are got by using the code apom94 , and the direct inelastic discrete energy level reaction cross sections and angular distribution of every isotopes are got by using the code dppm . thus the ultimate commended data , which coincide with each other , can be obtained by using code nunf 其具体过程是先对exfor实验数据进行评价,给出实验数据评价值,然后,利用程序apom94计算光学位,利用dppm程序计算直接非弹分立能级反应截面和角分布,在此基础上,利用nunf理论计算程序获得各同位素本身数据以及各同位素与天然元素数据自洽的最终推荐值。 |