Luminescence studies on swift heavy ion irradiated nanocrystalline aluminum oxide

Abstract

. Two photoluminescence (PL) emissions, a prominent one with peak at $ 525 nm and a shoulder at $ 465 nm are observed in heat treated and Au 9 + ion irradiated aluminum oxide. The 525 nm emission is attributed to F 2 2 + -centers. The PL intensity at 525 nm is found to increase with increase in ion fluence up to 1 Â 10 12 ions cm À 2 and decreases beyond this fluence. Thermoluminescence (TL) of heat-treated and swift heavy ion (SHI) irradiated aluminum oxide gives a strong and broad TL glow with peak at $ 610 K along with a weak shoulder at 500 K. The TL intensity is found to increase with Au 9 + ion fluence up to 1 Â 10 13 ions cm À 2 and decreases beyond this fluence.

Controllable one-dimension nanostructures of CuTNAP for field emission properties

“…Efforts to develop new low-voltage electronic field emission materials, especially of quasi one-dimension (1D), remain motivated due to their wide application in microwave power amplification, 1 electron microscopy, 2 display devices 3 and high-efficiency lighting. 4 Several inorganic 5,6 and organic materials [7][8][9][10][11][12] show excellent field emission properties from their low-dimensional nanostructures and high aspect ratio. Intrinsically organic small molecules and organic polymers have advantageous morphological and structural properties that are critical to develop techniques for controlling size, dimensions and functions.…”

Luminescence properties of 100 MeV swift Si7+ ions irradiated nanocrystalline zirconium oxide

“…A C C E P T E D ACCEPTED MANUSCRIPT defect concentration caused by Si 7+ ion [31]. At fluence of 3×10 11 ions cm -2 saturation in the defects concentration is observed.…”

Thermoluminescence Characteristics of Aluminium Oxide Doped Carbon Exposed to Cobalt-60 Gamma Radiation

“…(TL) is an established technique for radiation dosimetry as well as retrospective dosimetry. It is a physical phenomenon in which a solid sample absorbs energy while irradiated to ionizing radiation and the energy is released in the form of light [3,4]. Among the potential TL dosimeters, lithium fluoride is one of the most popular dosimeters and is commercially available due to its human tissue equivalence (Z eff = 8.04), which is an important factor for personal dosimetry, simple glow curve, high sensitivity and limited fading over a certain period.…”

“…Among the potential TL dosimeters, lithium fluoride is one of the most popular dosimeters and is commercially available due to its human tissue equivalence (Z eff = 8.04), which is an important factor for personal dosimetry, simple glow curve, high sensitivity and limited fading over a certain period. The main characteristics of the basic TL dosimeter include the wide useful range, sensitivity to small doses, and limited fading [4]. The sensitivity of a particular thermoluminescence dosimetry (TLD) material is defined as the TL signal (peak height or TL intensity integrated over certain temperature region) per unit absorbed dose per unit mass.…”