Kinetics of Thermoluminescence in X‐Irradiated KCl:Ag Crystals

Takeuch, N.; Ohtaki, Hitoshi; Nakamura, S.

doi:10.1002/pssb.2221300261

Cited by 9 publications

(4 citation statements)

References 6 publications

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“…It may be pointed out that the values obtained from potential energy minima should be approximately equal to the nearest-neighbour distance even though it may be admitted that the minimum position of the potential of mean force should be the same as that obtained from the first peak position of the RDF. Further the ratio of the second nearest-neighbour distance (R2) to the first nearest-neighbour distance ( R , ) is 1.72 in the case of Cu and 1.79 for Ag, while the model calculations of Takeuchi and Kobayashi [24] give the ratio as 1.65. Thus, the large ratio reveals a high degree of imperfect arrangement in the liquid state [25].…”

Section: Resultsmentioning

confidence: 90%

Computation of Elastic and Dynamic Properties of the Liquid Phase of Noble Metals Illustrating Typically for Molten Ag and Cu

Rao

Venkatesh

1995

Physica Status Solidi (b)

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The potential function as formulated by Bretonnet and Deroache is applied to liquid Cu and Ag to derive longitudinal and transverse phonon frequencies, the power spectrum, and the velocity autocorrelation function. From these phonon frequencies the elastic constants are evaluated. They are also calculated with the help of Schofield's equations which are computed through the first and second derivatives of the potential energy. The values are found to be in satisfactory agreement with each other. The ratio of the areas in negative regions of the velocity correlation function for these f.c.c. packed liquids are found to be equal to the ratio of their atomic weights. The characteristic frequencies calculated by several methods are in satisfactory agreement with each other. The nearest-neighbour distance obtained by different methods is also given. It is observed that the w,(k) maximum occurs around kF, the Fermi wave vector. From the velocity of sound calculated from the experimental compressibility and k, the w&) maximum is computed and is found to be in reasonable agreement with other values.

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Section: Resultsmentioning

confidence: 90%

Computation of Elastic and Dynamic Properties of the Liquid Phase of Noble Metals Illustrating Typically for Molten Ag and Cu

Rao

Venkatesh

1995

Physica Status Solidi (b)

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“…Considering all these aspects of the problem and instead of finding the symmetry factor µ g , equation (19) will be used in the present work, which is easier in use for obtaining the order of kinetics b and equation (17) or (18) will be used thereafter to obtain the activation energy E. To check the present method, generated TL glow peaks are used as the experimental data. Values of b, n 0 (cm −3 ), N (cm −3 ), E (eV), S (s −1 ) and R (K s −1 ) are chosen and the corresponding TL intensities I i (in arbitrary units) are calculated using equations (3), ( 5) and (10), for the first-, second-and general-order kinetics, respectively, and the values of the peak temperatures T m (K), T 1 (K), T 2 (K) and the peak areas A m , A 1 , and A 2 (in arbitrary units) are evaluated. Then, equation ( 19) is numerically solved for these peak parameters to obtain b.…”

Section: Resultsmentioning

confidence: 99%

“…A number of research workers [6][7][8][9][10][11][12][13][14][15][16][17][18] have used the symmetry factor µ g to determine the order of kinetics of TL glow peaks in various materials. Also, the determination of the order of kinetics from the symmetry factor has been the topic of discussion in several papers [14,[19][20][21][22][23][24].…”

Section: Introductionmentioning

confidence: 99%

A new method for obtaining the order of kinetics and the activation energy of the thermoluminescence glow peak

Rasheedy

1996

J. Phys.: Condens. Matter

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The order of kinetics b of the thermoluminescence (TL) glow peak is usually determined once its symmetry factor µ g is known. In the present work, an equation is suggested to estimate directly the order of kinetics b of the glow peak. The value of b can be obtained by using the values of the temperatures T m (K), T 1 (K) and T 2 (K) at the maximum intensity and half maximum intensities of the peaks, respectively and the peak areas A m , A 1 and A 2 estimated from T m , T 1 and T 2 to the final temperature of the glow peak, respectively. Also, the activation energy E (eV) can be obtained after evaluating the order of kinetics b. The methods were checked for numerically computed TL glow peaks. The results are in good agreement with the given values of the order of kinetics b and activation energy E.

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“…However, this is inconsistent with the "Maxwell-tail'' escape of electrons in the conduction band explained for the corresponding TSEE. Takeuchi et al [7] suggest that the recombination through the conduction band would be plausible considering the frequency factor obtained for this TL peak.…”

Section: Introductionmentioning

confidence: 87%

Emission Processes in Thermally Stimulated Exoelectron Emission and Thermoluminescence of KCl:Ag Single Crystals

Tomita

Fukuda

Kutomi

et al. 1990

Physica Status Solidi (b)

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The emission processes in the TSEE and TL glow peaks of KCI : Ag single crystals are discussed from the results of simultaneous recording of TSEE and TL glow curves, the spectral measurements of the TL and the optical re-excitation study. A large fraction of the exoelectron emissions at 400 K may be considered to arise from Auger-like decays of the excited Ag+ centers induced by the recombination of electrons from Ago with Ag2+ via the conduction band. The 275 nm emission band of TL at 400 K may be due to competing radiative decays of the excited Ag' centers. The electron emissions and the 275 nm component of TL at 250 K may originate from the excited Ag' centers resulting from the recombination of F (or F) centers with Ag+ centers.Der EmissionsprozeD in den TSEE-und TL-Maxima von KCI: Ag-Einkristallen wird anhand der Ergebnisse simultaner Aufzeichnungen von TSEE-und TL-Kurven, Spektralverteilungsmessungen der TL und Untersuchungen der optischen Wiederanregung diskutiert. Ein hoher Anteil der Exoelektronenemission bei 400 K beruht vermutlich auf Auger-artigen Zerfallen des angeregten Ag+-Zentrums, ausgelost durch die Rekombination von Elektronen aus Ago-Zustanden mit Agz + iiber das Leitungsband. Das 275 nm Emissionsband der TL bei 400 K wird wahrscheinlich durch den konkurrierenden strahlenden Zerfall des angeregten Ag+-Zentrums verursacht. Die Elektronenemission und die 275 nm Komponente der TL bei 250 K stammen wahrscheinlich von angeregten Ag+-Zentren bei der Rekombination von F'oder F-Zentren mit Ag+.

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Kinetics of Thermoluminescence in X‐Irradiated KCl:Ag Crystals

Cited by 9 publications

References 6 publications

Computation of Elastic and Dynamic Properties of the Liquid Phase of Noble Metals Illustrating Typically for Molten Ag and Cu

Computation of Elastic and Dynamic Properties of the Liquid Phase of Noble Metals Illustrating Typically for Molten Ag and Cu

A new method for obtaining the order of kinetics and the activation energy of the thermoluminescence glow peak

Emission Processes in Thermally Stimulated Exoelectron Emission and Thermoluminescence of KCl:Ag Single Crystals

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