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Figure 4
Wavelength dependence of beam size Rf (half width at half height), focused by a compound MgF2 lens (filled squares) and by a sextupole permanent magnetic lens (open circles). |
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Figure 4
Wavelength dependence of beam size Rf (half width at half height), focused by a compound MgF2 lens (filled squares) and by a sextupole permanent magnetic lens (open circles). |