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91.
Differential cross sections and analyzing powers from the inelastic scattering of 65 MeV protons leading to the 1+T=0 (12.71 MeV) and 1+T = 1 (15.11 MeV) states in 12C have been analysed as tests of a model two-nucleon t-matrix. 相似文献
92.
We analyse the stability of the hypothetical crystalline compounds of inert gases B(8) with metals A(2) of the second group of the periodic table. Compounds stable within wide temperature limits, and possessing specific optical properties are predicted. 相似文献
93.
Bowers J Amos KE Bruce DW Webster JR 《Langmuir : the ACS journal of surfaces and colloids》2005,21(4):1346-1353
The surface behavior of a range of surfactant [Ru(bipy)(2)(p,p'-dialkyl-2,2'-bipy)]Cl(2) complexes, which we express as Ru(q)(p)C(n) where n is the alkyl chain length, p refers to the substitution position on the bipyridine ligand (=4 or 5), and q (=1 or 2) is the number of substituted alkyl chains, has been examined using neutron reflectometry. The adsorption of the single-chain Ru(1)(4)C(19) and Ru(1)(5)C(19) surfactants is strongly time-dependent, taking in excess of 10 h to form an equilibrium film. It is suggested that the slow adsorption rate is related to the alkyl chain length rather than the low monomer concentration present in the solutions. At concentrations below the critical micelle concentration (cmc) of Ru(1)(4)C(19), the film of Ru(1)(5)C(19) is denser than that of Ru(1)(4)C(19) at comparable concentration, consistent with the mass densities of the bulk solids, whereas at concentrations close to and greater than this cmc the converse pertains. Close to the cmc, the adsorbed films possess an average area per molecule significantly less than the nominal headgroup area of the surfactants (approximately 30 angstroms(2) compared with approximately 100 angstroms(2)). This fact together with consideration of the thickness and density of the adsorbed films leads to the conjecture that surface aggregates may be the adsorbing units. The adsorption of the double-chain surfactant Ru(1)(p)C(19), in contrast to the behavior of the Ru(1)(p)C(19) surfactants, is weak and independent of time. This behavior is attributed to the alkyl chain orientation. The adsorption behavior of a racemic mixture of the Delta and Lambda isomers of Ru(2)(4)C(19) has been compared with that of the Delta isomer. It is found that the film of racemic material is more closely packed than that of the resolved complex. 相似文献
94.
A set of ten differential cross sections between 10 and 40 MeV for this charge exchange reaction have been analysed. In the analyses, amplitudes associated with the virtual excitation of the giant dipole and quadrupole reasonances in28Si complement those associated with the direct reaction mechanism. Such resonance effects are essential to explain the rapid energy variation of the data. 相似文献
95.
96.
Influence of the arbitrary strong interaction between the electrons on the thermodynamic and transport properties of disordered metals is considered. The contributions of the interaction in the diffusion channel to all of the quantities are shown to depend on only one Fermi-liquid interaction constant (to take interaction in the cooper channel into account one has to include one constant more). It is found very convenient to divide all of the diffusion corrections on the parts which correspond to different values of the total spin of the electron and hole j:j = 0 and j = 1. It is the interaction with j=1 that leads to magnetic field dependence of the diffusion contributions. In the presence of spin-dependent scattering of the electron only the contribution related to the interaction with j=0 are important. These contributions to all of the quantities are universal, i.e. they do not depend on any interaction constant. 相似文献
97.
Boris L. Altshuler 《International Journal of Theoretical Physics》1985,24(1):99-107
The integral formulation of equations of general relativity proposed earlier as a mathematical tool for Mach's principle forbids the conventional singular cosmologies but is compatible with the de Sitter initial space. 相似文献
98.
Roger D. Amos 《Chemical physics letters》1980,75(3):602-612
Møller-Plesset perturbation theory is used to find the second- and third-order correlation corrections to some oneelectron properties of HC1 and CO. An estimate of the fourth-order correction is made. It is shown that the perturbed wavefunctions can be constructed efficiently using the techniques of the direct CI methods. The results are comparable in accuracy with those obtained from large-scale CI calculations, but require considerably less computation. 相似文献
99.
100.
The kinetics of biomimetic mineralization at a fatty acid monolayer interface have been measured in situ by synchrotron x-ray reflectivity. The formation of biologically relevant amorphous calcium carbonate films is affected by soluble macromolecules, supersaturation rate of change, and Mg cations. We find that these solution conditions influence mineral film formation in a complementary fashion. Poly(sodium acrylate) extends the lifetime of metastable amorphous calcium carbonate, solution saturation controls the mineral film growth rate, and Mg cations create a longer induction time. This is the first quantification of potentially competitive biomineralization mechanisms that addresses nucleation and growth of the amorphous mineral phases, which are important in biomineralization. 相似文献