background: similar to the thermoluminescence (tl) spectra, the optical parameters variations can also be used in tl crystals for dosimetry purposes. these optical parameters can include absorption, transmission and reflection coefficients. materials and methods: single crystals of kbr and kcl which have been used in this research were grown from laboratory grade extra pure precursor powders. c...

Introduction: The most common cancer in women worldwide is breast and radiotherapy the best treatment choice after mastectomy.1,2 In radiation therapy mastectomy, depending on type of tumor, area removed goes under radiotherapy. Methods: TLD (Thermoluminescence Dosimetry) chips were used this project. Typically, each patient an irradiation 200 cGy during 25 sessions received a total 5000 cGy. R...

AIMS External beam radiotherapy is being used regularly to treat the breast malignancy postoperatively. The contribution of collimator leakage and scatter radiation dose to contralateral breast is of concern because of high radio sensitivity of breast tissue for carcinogenesis. This becomes more important when the treated cancer breast patient is younger than 45 years and therefore the contrala...

In our study, we aimed to measure the dose exposed by fetus during three-dimensional conformal radiotherapy (3D-CRT) and intensity-modulated (IMRT) treatment techniques in pregnant patients who had undergo due breast cancer with thermoluminescence dosimetry (TLD) compare these measurements planning system (TPS). 2.5 mm- thick computed tomography (CT) images of Alderson Rando phantom device were...

Herbicide, Inhibition, Photosynthetic Electron Transport, Trifluralin, Thermoluminescence The effect of trifluralin on the photosynthetic electron transport has been investigated by oxygen evolution and thermoluminescence measurements. The results confirm the earlier observations that trifluralin at low concentrations blocks electron transport between the two photosystems probably at the same s...

With interest in the potential of optical fibres as the basis of next-generation thermoluminescence dosimeters (TLDs), the development of suitable forms of material and their fabrication has become a fast-growing endeavour. Present study focuses on three types of Ge-doped optical fibres with different structural arrangements and/or shapes, namely conventional cylindrical fibre, capillary fibre,...

Evaluation of genetic alterations in inhabitants of an area of Tamil Nadu, India, chronically exposed to high background radiation (HBRA), was the major purpose of the present study. A total of 216 samples (exposed inhabitants, 108; control subjects, 108) were selected based on the confirmation of radiation dose level using thermoluminescence dosimetry (TLD). After signing a consent form, volun...

We describe the effect of nanoscale spatially coupled trapping centre (TC)–luminescent centre (LC) pairs on the thermoluminescence (TL) properties of LiF : Mg,Ti. It is shown that glow peak 5a (a low-temperature satellite of the major glow peak 5) arises from localized electron–hole (e–h) recombination in a TC–LC pair believed to be based on Mg–Livac trimers (the TCs) coupled to Ti(OH)n molecul...

Luminescence occurs in almost all the materials absorbing photon energy and is a phenomenon of light emitting process. There are various types of luminescence, e.g. fluorescence, phosphorescence, delayed luminescence, chemiluminescence and thermoluminescence. In these cases, light is emitted when a photoor chomo-excited molecules is deexcited to its ground state. During this deexcitation proces...