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Field desorption images

Solid/liquid probe Field desorption (FD) Radio frequency (RF) Image currents... [Pg.352]

The frequency factor, v, should be on the order of the lattice vibrational frequency, or 1013 s-1. The extreme simplicity of the model makes it very convenient for many applications. This theoretical model is now generally referred to as the image-hump model, or the Schottky-hump model, of field desorption. The potential energy curve of this model is not defined at all distances because of the crude nature of the argument it is nevertheless shown schematically in Fig. 2.9(a).48... [Pg.34]

Fid. 66. Field desorption of nitrogen leaving tungsten lattice undisturbed, (a) Clean tungsten ion image at 16.3 kv. (b) Nitrogen adsorption at T 20°K. (c) Surface after potential has been raised to 18 kv (in the absence of He). [Pg.380]

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Field desorption

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