A low-field part of the EPR spectrum of system irradiated with fast electrons at directly after irradiation and after annealing for at given temperatures. All the spectra were measured at . The arrows indicate the positions of lines from metastable trapping sites appearing under annealing.
A low-field part of the ESR spectrum of H atoms produced from irradiation of containing 4.3% of and the powder simulation of anisotropic signal from (see text for details). Irradiation and spectra measurements were performed at .
A low-field part of the ESR spectrum of H atoms produced from irradiation of acetylene in a matrix containing 86.2% of at and powder simulation of the spectrum expected for the trapping site (see text for details). The bottom spectrum shows effect of annealing ( at ). The spectra were measured at .
Schematic representation of different magnetic configurations of octahedral traps, which were considered for the matrix containing 86.2% of isotope. The black balls depict the H atoms, gray balls the magnetic atoms, and white balls the nonmagnetic xenon atoms (, see text for further explanation)
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