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EPR of atomic hydrogen 1H and 2H in α-quartz

1983; Elsevier BV; Volume: 44; Issue: 4 Linguagem: Inglês

10.1016/0022-3697(83)90102-6

1879-2553

Junichi Isoya, John A. Weil, Phillip Davis,

Spectroscopy and Quantum Chemical Studies

Detailed EPR measurements of the spin-Hamiltonian parameters for the hydrogen atom H0 in its principal low-temperature trapping site in X-irradiated α-quartz have been made at several temperatures in the range 40–100 K. Besides the Zeeman splitting matrix ḡ and the proton hyperfine matrix AH, the parameters include the super-hyperfine 29Si matrix describing interaction between these cavity wall atoms and H0. The measured spin-Hamiltonian parameters for the isotopes 1H0 and 2H0 are compared. The trapping site has been identified and is discussed. The hydrogen atom is mobile within this complex cavity comprised of various silicon and oxygen ions.