Isothermal decay of colour centres in microcrystalline powders of KBr:KI

Moharil, S. V.; Wakde, D. G.; Deshmukh, B. T.

doi:10.1088/0022-3719/12/2/011

Cited by 9 publications

(6 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our earlier work (Wakde et all979, Moharil and Deshmukh 1979b), the results on doping helped to distinguish between deformation effects and surface effects, e.g. the impurities hamper dislocation motions and the effects which arise owing to mobile dislocations thus become less prominent after doping.…”

Section: Resultsmentioning

confidence: 96%

“…By studying the colour centres in microcrystalline powders, and comparing the results with the corresponding results for single crystals, useful information about the interaction between colour centres and the other grosser imperfections such as grain boundaries, dislocations and surface defects can be obtained. In fact, during the past decade, we have observed several interesting differences in the properties of colour centres in microcrystalline powders compared with those in single crystals (Moharil andDeshmukh 1977, 1979a, b). We have found that the F centres in microcrystalline powders are less stable than those in single crystals (Deshmukh et a1 1983(Deshmukh et a1 , 1984.…”

Section: Introductionmentioning

confidence: 96%

“…F to colloid conversion was found to occur at lower temperatures in the powders (Deshmukh et aZl985). The shapes of F aggregate bands were found to be distorted (Moharil and Deshmukh 1977) in powders. These differences could be attributed to the interaction between colour centres and dislocations.…”

Section: Introductionmentioning

confidence: 96%

See 2 more Smart Citations

Thermoluminescence of microcrystalline powders of alkali halides

Patey

Moharil

Deshmukh

1989

J. Phys.: Condens. Matter

Self Cite

View full text Add to dashboard Cite

A comparative study of thermoluminescence of single crystals and powders of KCI and KBr is reported. It is found that the intensity is less for fine powders and the difference continues to increase with decreasing particle size. If the crushing-irradiation sequence is reversed, different results are obtained. The effect of doping on the phenomenon is also studied. The results are discussed in the light of the basic differences between the powders and the single crystals.

show abstract

Section: Resultsmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 96%

See 1 more Smart Citation

Thermoluminescence of microcrystalline powders of alkali halides

Patey

Moharil

Deshmukh

1989

J. Phys.: Condens. Matter

Self Cite

View full text Add to dashboard Cite

show abstract

“…Colour centres in alkali halides have been studied for many years. It is known that the electrolytic colouration produced in potassium halides is lost within a day . Colour centres have mostly been studied in single crystals, whereas applications such as dosimetry of ionizing radiation using TL more often involve measurements on powders.…”

Section: Introductionmentioning

confidence: 99%

KCl:Dy phosphor for thermoluminescence dosimetry of ionizing radiation

Bhujbal¹,

Dhoble

2012

Luminescence

View full text Add to dashboard Cite

The thermoluminescence (TL) characterizations of γ-irradiated KCl:Dy phosphor for radiation dosimetry are reported. All phosphors were synthesized via a wet chemical route. Minimum fading of TL intensity is recorded in the prepared material. TL in samples containing different concentrations of Dy impurity was studied at different γ-irradiation doses. Peak TL intensities varied sublinearly with γ-ray dose in all samples, but were linear between 0.08 to 0.75 kGy for the KCl:Dy (0.1 mol%) sample. This material may be useful for dosimetry within this range of γ-ray dose. TL peak height was found to be dependant on the concentration (0.05-0.5 mol%) of added Dy in the host.

show abstract

“…Colour centres in alkali halides have been studied for many years. It is known that the coloration produced in potassium halides is lost within a day . The colour centres have mostly been studied in single crystals, while applications such as dosimetry of the ionizing radiation using TL and LL techniques more often involve measurements on powders.…”

Section: Introductionmentioning

confidence: 99%

Lyoluminescence, thermoluminescence and mechanoluminescence studies in γ‐ray irradiated Dy³⁺ activated potassium chloride phosphor for accidental radiation dosimetry

Bhujbal¹,

Dhoble

2011

Luminescence

View full text Add to dashboard Cite

The lyoluminescence (LL), thermoluminescence (TL) and mechanoluminescence (ML) of γ-ray-irradiated coloured powder of KCl:Dy (0.05-0.5 mol%) phosphors are reported in this paper. To understand the mechanism of LL and ML, the LL and ML spectra are compared with TL studies. The variation of intensity of respective luminescence with different γ-ray doses and with different concentrations of Dy3+ ion doped in KCl is found to be similar in nature. The intensities differ from each other, but their nature is found to be similar with γ-ray exposures. The ML glow peak intensity is linear up to high 1 kGy exposure as compared to LL (up to 0.5 kGy) and TL (up to 0.75 kGy) techniques. Therefore, according to our results, the recommendation is that KCl:Dy (0.1 mol%) phosphor prepared by wet chemical technique is useful for high-dose measurements using the ML technique for accidental radiation dosimetry.

show abstract

Isothermal decay of colour centres in microcrystalline powders of KBr:KI

Cited by 9 publications

References 6 publications

Thermoluminescence of microcrystalline powders of alkali halides

Thermoluminescence of microcrystalline powders of alkali halides

KCl:Dy phosphor for thermoluminescence dosimetry of ionizing radiation

Lyoluminescence, thermoluminescence and mechanoluminescence studies in γ‐ray irradiated Dy³⁺ activated potassium chloride phosphor for accidental radiation dosimetry

Contact Info

Product

Resources

About

Isothermal decay of colour centres in microcrystalline powders of KBr:KI

Cited by 9 publications

References 6 publications

Thermoluminescence of microcrystalline powders of alkali halides

Thermoluminescence of microcrystalline powders of alkali halides

KCl:Dy phosphor for thermoluminescence dosimetry of ionizing radiation

Lyoluminescence, thermoluminescence and mechanoluminescence studies in γ‐ray irradiated Dy3+ activated potassium chloride phosphor for accidental radiation dosimetry

Contact Info

Product

Resources

About

Lyoluminescence, thermoluminescence and mechanoluminescence studies in γ‐ray irradiated Dy³⁺ activated potassium chloride phosphor for accidental radiation dosimetry