Transient absorption spectra of F' and F'A(Na) centers in KC1 at room temperature obtained by means of rapid scanning flash spectrophotometry

Тодоров, Т.; Koralov, N.; Georgiev, M.

doi:10.1016/0030-4018(75)90141-8

Cited by 3 publications

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“…With 100 Ws discharge energy this gives an electric power peak of 20 MW. The spectrophotometric equipment has already been described in detail [12]. Both kinetic and spectral measurements were made of the F' absorption induced by the spark.…”

Section: Methodsmentioning

confidence: 99%

Room temperature FF′ conversion in KCl crystals of various purity and method of coloration

Nierzewski

Тодоров²,

Georgiev

1978

Physica Status Solidi (b)

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The FF′ conversion is initiated by flash‐light excitation at room temperature with the aim of obtaining data on the electron trapping and transition characteristics in KCl crystals of various purity and coloured in different ways. The purest, γ‐irradiated sample exhibits a relatively short F' lifetime and a proportionally large F centre‐to‐anion vacancy cross‐section ratio presumably resulting from an enhanced trapping ability of the F centre. In contrast, Na‐containing irradiated samples show unusually long F' lifetimes, not correlated to the corresponding cross‐section ratios. The F' yield in the pure samples is found to drop on repeated flashing which presumably reflects the drop in F centre ionization quantum efficiency as a result of clustering processes. Electrolytically coloured samples doped with divalent cations are also investigated.

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Section: Methodsmentioning

confidence: 99%