[en] The proceedings contain the papers presented at the seminar. They give a broad outline of the current developments in India in the field of thermoluminescence (TL), also known as thermally stimulated luminescence (TSL). Although physical understanding of TL is still phenomenological, it is used on a large scale in the fields of radiation dosimetry and archaeometry. In India there are strong centres of research in TL phenomena at Indian Institute of Technology, Kharagpur; Maharaja Sayajirao University, Baroda; Bhabha Atomic Research Centre (BARC), Bombay; Physical Research Laboratory (PRL), Ahmedabad. A broad-based research programme for developing thermoluminescent dosimetry system is continuing at BARC and an up to date facility of dating of archaeological earthen objects has been established at PRL. The papers cover a broad spectrum of different aspects of TL and allied phenomena and are arranged in two parts entitled : (1) Thermoluminescence and Luminescence Phenomena, and (2) Electroluminescence (M.G.B.)

[en] Investigations have revealed that sand has desired characteristics for its use as an accident gamma dosimeter. The present paper describes the status of typical Rajasthan sand, its energy response, thermal annealing characteristics and effect of ultraviolet radiations on TL signals induced by gamma irradiated sand samples. (authors). 14 refs., 3 figs

[en] Lyoluminescence is the emission of light during the dissolution of irradiated organic and inorganic solids in suitable solvents. This phenomenon has attracted interdisciplinary research involving radiation physics, radiation chemistry and physical chemistry. This paper presents an overall view of the various aspects of lyoluminescence studies in the field of radiation research. (author). 14 refs

[en] The various methods are applied to obtain the trapping parameters with the help of Antonov-Romanovski's equation for KCl:Tl phosphors. It is shown that the results of various methods are in good agreement. The consistent results are also obtained even for the order of kinetics close to 2. The results are analysed for the isothermal decay curves recorded at 385K (author). 11 refs., 1 tab., 4 figs

[en] Thermoluminescence (TL) and phosphorescence decay study has been made to determine the trapping parameters in ZnS:Cu and ZnS:(Cu,Dy) phosphors. An attempt has been made to identify the traps responsible for thermoluminescence. The decay constants have also been calculated from decay curves. (author). 10 refs., 5 figs., 2 tabs

[en] Thermoluminescence results of cesium halides doped with impurities, Ag⁺, Cu⁺, Co⁺+, Ca⁺+, Zn⁺+ and Mg⁺+ are discussed. (author). 14 refs., 12 figs

[en] Due to progressive expansion of commercial food irradiation in recent years, the interest in detecting whether a food has been irradiated or not is growing fast and research in several methods for identification of various irradiated food stuffs is the order of the day. TL has emerged as one of the most promising tool for distinguishing between irradiated and unirradiated food. Advantages of TL method over other physical methods, its application to various foods, limitation and present state of art are discussed.(author). 9 refs., 3 tabs

[en] A review on the status and trends of thermoluminescent dosimeters (TLD) has been made to indicate the progress made so far and the direction in which the future efforts should be concentrated in TLD research. (author). 31 refs

[en] The present paper reports the mechano and thermoluminescence of coloured sodium tetraborate glasses prepared at 900^oC by sudden cooling from the melt. When mechano luminescence (ML) is excited impulsively by dropping a load onto the sample of fixed mass, initially the ML intensity, increases with time, attains a maximum value and then it decreases. The peak of the ML intensity versus time curve shifts towards shorter time values with increasing impact velocities. The total ML intensity, that is, the area below the ML intensity versus time curve also increases with the strain rate of the glasses. The thermoluminescence (TL) glow curve was recorded for three heating rates. The main TL peak occurs at 160^oC which shifts towards higher temperature values with increasing heating rates. Both the ML and TL intensities increase with the irradiation dose of the sample. (author). 5 refs., 5 figs

[en] On high gamma ray irradiation, the transparent ruby mica was found to emit TL. The TL peaks occur at 175^oC and 275^oC. However, their TL intensity is nearly 10⁵ times weaker than that of 0.4 mm thick CaSO₄:Dy Teflon dosemeters. Therefore for personnel dosimetry applications, the radiation induced TL from mica in the new TLD card, which incorporates mica as an antibuckling device, can be totally ignored. The TL response of 275^oC peak in mica was found to increase sublinearly in the gamma dose range 10² - 10⁴ Gy. Its TL intensity did not change with post-irradiation interval when it was stored at room temperature. Therefore the TL from mica may serve as an inexpensive high level gamma ray dosemeter. (author). 1 ref