Symmetry of the Green Phosphorescence of Heat Pretreated Colored KCl Crystals

Halperin, A.; Lewis, Noga

doi:10.1103/physrev.119.510

Cited by 6 publications

(1 citation statement)

References 11 publications

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“…14 изображены кривые фосфоресценции кристалла КС1, предварительно облученного светом с Ε || (011), снятые в поляризован-ном свете на разных стадиях затухания. Авторы 48 связывают АЦ зеленой фосфоресценции с внедренным в решетку кислородом, Рис. 14.…”

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Latent optical anisotropy of cubic crystals containing local centers, and methods of its study

Feofilov¹,

Kaplyanskiǐ²

1962

Usp. Fiz. Nauk

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Latent optical anisotropy of cubic crystals containing local centers, and methods of its study

Feofilov¹,

Kaplyanskiǐ²

1962

Usp. Fiz. Nauk

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Birefringence Induced by Light in Potassium Chloride Crystals Coloured by Ionizing Radiation

Damm

Słukaszewicz

1963

Physica Status Solidi (b)

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A new anisotropic effect is oberserved in some potassium chloride crystals coloured by ionizing radiation. The coloured samples exhibit birefringence after illumination with ordinary or polarized light. By using suitable illumination conditions it is possible to obtain both uni‐ and biaxial crystals with optical directions parallel to the cube edges, and possessing either negative or positive optical signs. It is found that only light of wavelength between 625 and 750 nm is effective in producing the optical anisotropy and that the light undergoing double refraction lies in the same range of wavelengths. Some properties of the defects responsible for the birefringence and a possible mechanism of the effect are discussed.

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On glow curves obtained by ionizing and non‐ionizing radiation

Kristianpoller

Israeli

1971

Physica Status Solidi (b)

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Two distinct groups of glow peaks have recently been observed in nominally pure, uv excited alkali helides. These glow peaks are investigated in comparison with those obtained by X-irradiation. Different processes are assumed tobe responsible for the excitationofthe thermoluminescence (TL) emitted a t the various peaks. One process, which is connected with the creation of Frenkel pairs, causes the excitation of TL by uv light in the region of the first exciton band. This processappears also to be dominant in the excitation of "virgin", pure samples by X-rays. Another process is involved in the excitation of TL by ionizing uv light. This excitation, which is restricted in this case to a thin surface layer, is attributed to the presence of oxygen impurities and the generation of V, centres.Zwei verschiedene Gruppen von Glowmaxima wurden in nominell reinen, UV-bestrahlten Alkalihalogeniden beobachtet. Diese Maxima wurden untersucht und mit den Glowmaxima von rontgenbestrahlten Kristallen verglichen. Die Anregung der bei den verschiedenen Glowmaxima ausgestrahlten Thermolumineszenz (TL) wird verschiedenen Prozessen zugeschrieben. Es wird angenommen, daB ein ProzeB, welcher mit Erzeugung von Frenkel-Paaren verbunden ist, zur Anregung der TL mit UV-Licht im Bereiche der ersten Exzitonenbande fiihrt. Der gleiche ProzeB scheint auch bei der Anregung der TL bei Rontgenbestrahlung von reinen, ,,jungfriiulichen" Kristallen vorzuherrschen. Ein anderer ProzeB ist dagegen mit der Anregung der TL durch ionisierende UV-Strahlung verbunden. I n diesem Falle ist die Anregung der TL auf eine diinne Oberfliichenschicht beschriinkt und wird Sauerstoffverunreinigungen und der Erzeugung von VK-Zentren zugeschrieben.

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Symmetry of the Green Phosphorescence of Heat Pretreated Colored KCl Crystals

Cited by 6 publications

References 11 publications

Latent optical anisotropy of cubic crystals containing local centers, and methods of its study

Latent optical anisotropy of cubic crystals containing local centers, and methods of its study

Birefringence Induced by Light in Potassium Chloride Crystals Coloured by Ionizing Radiation

On glow curves obtained by ionizing and non‐ionizing radiation

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