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101.
Zhao J Zhang Y Kan Y Zhu L 《Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy》2004,60(3):679-688
The vibrational spectra of Group IIB elements halides MX2 and their dimers M2X4 (M=Zn(II), Cd(II) and Hg(II); X=F, Cl, Br and I) have been systematically investigated by ab initio RHF and B3LYP methods with LanL2MB, LanL2DZ and SDD basis sets. The optimized geometries, calculated vibrational frequencies are evaluated via comparison with the experimental data. The vibrational frequencies, calculated by these methods with different basis sets, are compared to each other too. The best results can be obtained by RHF/SDD method, with this method, the deviations for MX2 and Hg2X4 are <7%. Some vibrational frequencies of M2X4 that have not been experimentally reported are also predicted. 相似文献
102.
A functionf from the posetP to the posetQ is a strict morphism if for allx, y P withx we havef(x). If there is such a strict morphism fromP toQ we writeP Q, otherwise we writeP
Q. We say a posetM is multiplicative if for any posetsP, Q withP
M andQ
M we haveP ×Q
M. (Here (p
1,q
1)<(p
2,q
2) if and only ifp
1<p
2 andq
1<q
2.) This paper proves that well-founded trees with height are multiplicative posets.This research was supported in part by NSERC Grant #69-1325. 相似文献
103.
104.
105.
106.
107.
Alam MS Kim IJ Nemati B O'Neill JJ Romero V Severini H Sun CR Wang P Zoeller MM Crawford G Fulton R Gan KK Kagan H Kass R Lee J Malchow R Morrow F Sung M White C Whitmore J Wilson P Butler F Fu X Kalbfleisch G Lambrecht M Skubic P Snow J Bortoletto D Brown DN Dominick J McIlwain RL Miao T Miller DH Modesitt M Schaffner SF Shibata EI Shipsey IP Battle M Ernst J Kroha H Roberts S Sparks K Thorndike EH Wang C Artuso M Goldberg M Haupt T Horwitz N Kennett R Moneti GC Playfer S Rozen Y Rubin P 《Physical review D: Particles and fields》1992,46(11):4822-4827
108.
Ke-Ming Wang Bo-Rong Shi Xiang-Dong Liu Tian-Bing Xu Pei-Ran Zhu Jun-Si Zhu Qing-Tai Zhao 《Applied Physics A: Materials Science & Processing》1992,55(4):332-334
The effect of 2.0 MeV Cu+ irradiation on Si(100) crystal has been studied by the Rutherford backscattering/channeling technique. Analysis of the lattice disorder distribution has been performed under 100 direction of tilting off from the target normal: 7°, 30°, and 45° as well as different doses. The lattice disorder distributions in Si(100) have been compared with TRIM'89 simulation. The results show that the lattice disorder distributions in Si(100) under different irradiation angles seem to be in good agreement with TRIM'89 simulation. When the dose increases up to 8.7×1014 ions/cm2, the defect concentration increases leading to the formation of an amorphous layer. 相似文献
109.
Meifang Zhu 《Applied Physics A: Materials Science & Processing》1991,52(5):285-288
A theoretical analysis of thermostimulated conductivity spectra TSC(T) has been applied to determine the density of gap states g(E) in a-Si: H and a-Si: H/a-SiN
x
: H multilayer structures. The results for g(E) are consistent with the results deduced from Fritzsche's analytical approach as well as other methods. A comparison has been made between the two different analytical approaches for TSC(T). We discuss the relationship between the energy of maximum thermostimulated current emission E
m and quasi-Fermi level E
q. We demonstrate that E
q could be a better parameter than E
m in the general theoretical treatment of thermostimulated conductivity. 相似文献
110.