高能重离子碰撞中的正常核与反常核——关于反常现象的一种新解释

本文对高能重离子碰撞中射弹碎片的反常现象提出一种新解释,计算出了射弹碎片中正常核、反常核及二者之和的数目、广义作用星数、广义局域平均自由程等与距离的函数关系。

高能重离子碰撞中的正常核与反常核——关于反常现象的第五种解释

本文对高能重离子碰撞中射弹碎片的反常现象提出了第五种解释。计算出了射弹碎片中正常核、反常核及二者之和的数目、广义作用星数、广义局域平均自由程等与距离的函数关系。

反常核态研究

本文从强子硬芯模型出发,用具有手征对称性的拉格朗日能量密度,得到了一核态方程组,求解得到了反常核态,,并得到了计算正常核态和反常核态结合能的两个公式。研究结果表明,反常核态有比正常核态大得多的结合能,但其密度只比正常核态稍大,因而反常核态的实际存在是可能的。

有限反常核

从一个相对论性核模型解得了有限反常核,并找到了两个临界质量数A_1=85和A_2=165,只当质量数A≥A_1时才存在束缚的反常核,当A≥A_2时反常核的每核子结合能大于正常核。当A>3310时反常核由于库伦能而变得非束缚。

冷聚变研究的争论

简要介绍了冷聚变研究的争论,列举最近冷聚变研究的令人信服的实验证据,包括:反常核聚变——Fleischmann-Pons效应的实验;常温下的正常核聚变,热核聚变反应中的反常核产物的实验证据。实验证实:冷聚变是能够真实发生、可信的。

冷聚变的实验进展

本文根据国外发表的一系列资料,简单介绍最近冷聚变研究的令人信服的实验证据,包括:反常核聚变:Fleischmann_Pons效应的实验证实,常温下的正常核聚变,热核聚变反应中的反常核产物的实验证据。

Predicting Rate Constants for Nucleophilic Reactions of Amines with Diarylcarbenium Ions Using an ONIOM Method

The rate constants of the nucleophilic reactions between amines and benzhydrylium ions were calculated using first-principles theoretical methods. Solvation models including PCM, CPCM, and COSMORS, as well as different types of atomic radii including UA0, UAKS, UAHF, Bondi, and UFF, and several single-point energy calculation methods （B3LYP, B3P86, B3PW91, BHANDH, PBEPBE, BMK, M06, MP2, and ONIOM method） were examined. By comparing the correlation between experimental rate constants and the calculated values, the ONIOM（CCSD（T）/6-311＋＋G（2df,2p）：B3LYP/6-311＋＋G（2df,2p））//B3LYP/6- 31G（d）/PCM/UFF） method was found to perform the best. This method was then employed to calculate the rate constants of the reactions between diverse amines and diarylcarbenium ions. The calculated rate constants for 65 reactions of amines with diarylcarbenium ions are in agreement with the experimental values, indicating that it is feasible to predict the rate constant of a reaction between an amine and a diarylcarbenium ion through ab initio calculation.