Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Maximum kinetic energy

What is the maximum kinetic energy of the N—N system as defined ... [Pg.285]

In XPS the photoelectrons are retarded to a constant energy, called the pass energy, as they approach the entrance slit. If this were not done, Eq. (2.5) shows that to achieve an absolute resolution of 1 eV at the maximum kinetic energy of approximately 1500 eV (using A1 Ka radiation), and with a slit width of 2 mm, would require an analyzer with an average radius of about 300 cm, which is impracticable. Pass energies are selected in the range 20-100 eV for XPS, which enables the analyzer to be built with a radius of 10-15 cm. [Pg.14]

As was expected, the Erode equation (9.3.1) gives higher values for energy than the others [(9.3.2) with (9.3.3) and (9.3.4)]. The use of Eq. (9.3.2) with (9.3.4) is recommended. Twenty to fifty percent of this energy will be translated into the kinetic energy of the fragments, so the maximum kinetic energy will be ... [Pg.327]

The problems of distinguishing H+ produced from H2 by electron impact from the product of dissociative charge transfer reactions between He + and H2 can be studied by determining the kinetic energy distribution in the product H+ (6). The reaction He+ + H2 is exothermic by 6.5 e.v. if the products are atoms or atomic ions. If the reaction is studied with HD substituted for H2, then the maximum kinetic energy that can be deposited in the D + is approximately 2.16 e.v. On the other hand, D + can be produced by electron impact with 5.5 e.v. kinetic energy. If a retarding potential is applied at the repeller in the ion-source of a mass spectrometer, then it is possible to obtain curves related to the kinetic... [Pg.109]

Above the threshold frequency, the maximum kinetic energy of ejected electrons increases linearly with the frequency of the light, as shown in Figure 7-6. [Pg.443]

The minimum energy needed to remove an electron from a potassium metal surface is 3.7 X 10 J. Will photons of frequencies 4.3 X 10 s (red light) and of 7.5 X 10 s (blue light) trigger the photoelectric effect If so, what is the maximum kinetic energy of the ejected electrons ... [Pg.446]

C07-0105. In a photoelectric effect experiment, photons whose energy is 6.00 X 10 J are absorbed by a metal, and the maximum kinetic energy of the resulting electrons is = 2.70 X 10 J. [Pg.497]

The maximum kinetic energy flux of ions. (eTlmax (W m ), can be defined as... [Pg.118]

The conclusion that the local hardness is given entirely by the variable parts of the kinetic energy is very logical. It is the kinetic energy increase which limits the distribution of electron density in all systems with fixed nuclei. Since the equilibrium state of atoms and molecules is characterized by minimum energy, they will also be marked by maximum kinetic energy because of the virial theorem. This will put them in agreement with the principles of maximum hardness, for which much evidence exists. [Pg.161]

The energy required to extract an electron from the organic solid to a point in vacuum outside its surface, i.e., the work function

photon energy. The remarkable constancy of the work function, which is independent of the photon energy, leads to the following conclusions (1) the probability of the electron abstraction from the solid does not vary with the photon energy ... [Pg.417]

A.14 The maximum ground speed of a three-toed sloth is 0.25 km-h Calculate the maximum kinetic energy of a three-toed sloth of mass 21 kg as it traverses the forest floor. [Pg.46]

The table below shows the maximum kinetic energy (in electron volts) of electrons emitted in a photoelectric experiment, for various wavelengths of radiation. By plotting the electron energy in joules against the frequency of radiation, show that these data support Einstein s prediction (eqn 1.13), and use them to obtain a value for Planck s constant. [Pg.16]

Calculate the maximum kinetic energy of the beta particle emitted in the radioactive decay of 6He. Assume that the beta particle has maximum energy when no other emission is involved. [Pg.367]

N decays by positron emission. The maximum kinetic energy of f)+ is 1.20MeV. What is the nuclidic... [Pg.367]

FIGURE 5.4 Light will only eject electrons from a metallic surface if the frequency is higher than a specific threshold, which varies for different metals. The maximum kinetic energy of the emitted electrons will increase if the frequency of the incident light increases. Einstein interpreted these observations as evidence for photons with energy E = hv. [Pg.96]

Maximum head is attained at zero flow, when the maximum kinetic energy gained by the fluid within the impeller is converted into pressure. As the flow through the pump is increased, the fluid leaving the outlet takes with it kinetic energy. Therefore, less of the kinetic energy gained... [Pg.78]

The maximum kinetic energy transferred to the daughter atom in the jS-decay, expressed in eV, and assuming no angular correlation between the emitted j3-particle and the antineutrino, is given by the expression (Wu, 1965) ... [Pg.85]

This is the maximum kinetic energy accessible to the van der Waals bond when motion is limited to the interior of the dividing surface that just contains the con torus. [Pg.47]

It takes 208.4 kj of energy to remove one mol of electrons from the atoms on the surface of rubidium metal. If rubidium metal is irradiated with 254-nm light, what is the maximum kinetic energy the released electrons can have ... [Pg.574]

FIGURE 4.16 (a) Two key aspects of the photoelectric effect. Blue light is effective in ejecting electrons from the surface of this metal, but red light is not. (b) The maximum kinetic energy of the ejected electrons varies linearly with the frequency of light used. [Pg.133]


See other pages where Maximum kinetic energy is mentioned: [Pg.1893]    [Pg.72]    [Pg.448]    [Pg.491]    [Pg.497]    [Pg.30]    [Pg.348]    [Pg.349]    [Pg.8]    [Pg.208]    [Pg.75]    [Pg.53]    [Pg.150]    [Pg.404]    [Pg.1287]    [Pg.210]    [Pg.407]    [Pg.408]    [Pg.367]    [Pg.291]    [Pg.440]    [Pg.85]    [Pg.47]    [Pg.49]    [Pg.71]    [Pg.19]    [Pg.133]    [Pg.134]    [Pg.134]   
See also in sourсe #XX -- [ Pg.553 ]




SEARCH



Energy maxima

© 2024 chempedia.info