7-reaction longitudinal cross-section

To conclude we have examined the applicability of the continuum-distorted-wave theory to experiments carried out using the reaction microscopy technique for both doubly differential cross sections for longitudinal electron velocities and fully differential cross sections applied to the single ionization of 3.6 MeV amu on neutral target atoms. For the case of the... 

It may seem that even after 6 hours of reaction, WPG is insufficiently low to impart decay resistance to wood. The rate of vapor phase reactions is determined by the rate of permeation of reagent vapors into the wood. It has been observed that even longitudinal permeability of wood decreased by 2-10 times during acetylation (38). This probably is the reason for slow increase in WPG. In chir also a WPG of 7 percent and 10.9 percent was observed in four and eight hours acetylation respectively. In an earlier study using only 0.25 cm thick samples a WPG of 16.67% was obtained in four hours (35). Similar limitations were observed by Tarkow et al (37), who concluded that 3 mm thickness was the most optimum to obtain uniform acetylation. The effect of cross-section on acetylation is quite clear in Table II. 

Maier [170] and Lindemann et al. [171] have carried out cross-section measurements of reaction (107) as a function of ion kinetic energy. Maier used a longitudinal tandem mass spectrometer and Lindemann et al. a perpendicular tandem mass spectrometer. Thus the ion kinetic energies were rather well defined in both of the studies. C ions were produced by electron bombardment of CO under such conditions that all projectiles were in the ground state. Their results are summarized in Fig. 19 in which cross-sections are plotted versus barycentric energy. 

Fig. 18. Compilation of cross-section data for the reaction He (N2,He + N)N as a function of the He" ion energy, made by Maier, to which reference should be made for the sources of the data. The long-dashed line is beam data the short-dash/long-dashed line is obtained from stationary afterglow data the solid line refers to longitudinal tandem data and the short-dashed line is the Langevin cross section.

The reaction force arising in the specimen due to an external load F is also longitudinally constant due to the uniform cross-section Aq and therefore only a function of time. If specimens with altered cross-section or length are used, the measured load F and elongation AL have to be normalized in order to evaluate material properties. To do so, the acting load is related to the initial cross-section area Aq, whereby normal or engineering stress a is calculated as follows ... 

Experiment 5. Over and above longitudinal influences on the form of the limit cycle, cross-sectional influences can occur, such as an influence on the frequency of one nation s cycle by the business activities in other nations (locomotion theory). The resulting strategic reactions of this one nation s investors may further distort the limit cycle, so that a modified strongly non-sinusoi-dal reaction pattern emerges this then favours or disfavours a rush into certain types of investment see Figs. 5.8 a, b. 

In the jet method, for mixed reactants the concentration of active species R- due to reaction 6 decreases along the jet. This decrease, which is experimentally detected by spectrometiic methods, allows to be detmmined. Difficulties iqjpeared in this method are associated widi the decay of active species in collisions with the reactor surface, necessity to take into account longitudinal and transversal difiusion, and nonuniformity of die distribution of the flow velocity over the tube cross section. Expoimoits are usually performed under conditions where the distribution of the concentration of active species and the nonuniformity related to Poiseuille s flow can be neglected. 

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