中能质子引起散裂反应的碎片质量分布研究

对 SHIELD程序进行了部分检验,利用SHIELD程序计算质子入射铅的薄靶产生的靶碎片的截面及质量分布和激发函数 ,计算结果较好地再现了实验数据 .并计算了 1 .6Ge V的质子轰击长 60 cm和直径20cm的铅靶的碎片质量分布. The test of part benchmark of SHIELD code was performed. The cross section, mass distribution and excitation function of the fragments (including residual nuclei) in the proton induced spallation reaction on thin Pb target at intermediate energy have been calculated by SHIELD code. And the results are in good agreement with experimental data. The fragment mass distributions from proton induced spallation reaction on thick Pb traget at incident energy 1.6 GeV were also presented.     

Some q-Deformed Combinat orial Identities and Their Applications

A q-deformed binomial theorem is firstly presented in this work. Some operator identities in q-deformed two-mode Fock space are derived by virtue of the q-binomial theorem. As an application of these identities, we prove a new completeness relation for the q-analogue of the singlecomplex-variablestate in the two-mode Fock space.     

Population of Unstable Nuclides and Nuclear Temperature Extraction in 46.7MeV/u 12C Induced Reaction

The experiment results of unstable nucliaes decay by using the light charged particle correlation function obtained in ¹²C 46.7MeV/u+⁵⁸Ni experiment are reported.Under the assumption of statistical equilibrium,the nuclear temperatures are extracted,and the influence of the reaction mechanism on the nuclear temperature are also investigated.     

金属羰基化合物的氧原子转移反应——取代亚碘酰苯存在下Cr(CO)6的CO取代反应动力学研究

在取代亚碘酰苯存在下,研究了Cr(CO)₆与外来配体L(L=CH₃CN、PPh₃)间的羰基取代反应动力学.结果表明,该试剂的空间效应加快了反应速度,其活性顺序为:邻位取代>间位取代>对位取代>未取代;不同基团的对位取代亚碘酰苯的电子效应与氧原子转移速度之间呈良好的线性关系.吸电子基促进反应,在位阻相近的情况下,取代亚碘酰苯的活性随I-O键强减小而增大.     

Application of Hadron-Hadron Nuclear Interaction Parametrization Model in the Study of Superhigh Energy Cosmic Rays

Under the assumption of mixed primary cosmic ray composition and using a hadron-hadron interaction parametrization model to describe hadron-hadron nuclear interaction,the behavior of superhigh energy cosmic ray particles in the atmosphere is simulated,and the simulated results compared with experimental data of Mt.emulsion chamber in details.The influences from the mean transverse momentum value of secondary particles in fragmentation region on simulated results are discussed also in details.     

Momentum of Φ Field and Inflation

With quantum mechanical method, we discuss the metastable states of the quantum universe, and give two eigenstates corresponding to nonzero and zero conjugate momenta P_Φ under the assumption of p=-5, where p is the ordering factor. Analyaea for their classical evolution are made, and there comes a conclusion: The mom-entum of the scalar field of quantum state has very little effect on its later classical evolution. This gives a favourable support to the classical theory of inflation.     

交流电方法用于单晶n-CdTe光电极性能的研究

本文应用循环伏安法研究了n型碲化镉单晶电极的光致腐蚀行为; 并运用PAR M368电化学阻抗系统测得了此电极在不同电位下的交流复阻抗图, 估算了此电极表面态密度及其它参数。实验结果表明, n-CdTe/液体结具有Sehottky结的特征, 此电极的Fermi能级可能有"钉扎"现象。     

10-甲基-PGD2的合成子的合成

PGD2的合成子(9)的合成是以2-甲基环戊1,3-二酮(1)为原料, 经烯醇醚化、烯丙基化、酸去保护、羰基的锂铝氢还原、臭氧化、氧化、甲酰化获得.     

双酰胺双(3'-正十五烷基-苯并-15-冠-5)PVC膜钾离子选择电极的研究

本文合成了十个双酰胺型双(3'-正十五烷基-苯并-15-冠-5)化合物, 制成的PVC膜钾离子选择电极, 性能优良.     

New Representation for Tensor Product of a Kind of Squeeze Operators

Using the IWOP (integration within ordered product) technique, we construct a new state vector representation in two-mode Fock space. The tensor product of a kind of squeeze operators can then be well identified in the new representation, which manifestly shows that these squeeze operators are quantum maps imaged by certain symplectic transformation in classical phase space.