APPLICATION OF MULTILAYERS OF (SNO2)-SN-119 (SNO2)-SN-120 TO A COHERENT NUCLEAR RESONANT MONOCHROMATOR FOR SYNCHROTRON-RADIATION - DESIGN/

We have designed multilayered nuclear monochromators of (SnO2)-Sn-119/ (SnO2)-Sn-120 with a modulation wavelength of 20-40 angstrom and 25-50 bilayers as an alternative method to a grazing-incidence antireflecti on thin film. Our goal is to fabricate a monochromator for a synchrotr on radiation source, and to achieve a nuclear reflectivity of approxim ately 0.3 at a relatively high incidence angle of approximately 7 mrad with an energy resolution of approximately 0.5 mueV (i.e. 10GAMMA, wh ere GAMMA = 5.15 x 10(-8) eV).