LiF films: Production and characterization

Montereali, Rosa Maria; Baldacchini, G.; Martelli, Stefano; Carmo, L. C. S. do

doi:10.1016/0040-6090(91)90175-w

Cited by 72 publications

(39 citation statements)

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“…morphology; therefore, the evaporation parameters were selected based on a previous investigation [13] of LiF thin films deposited on a glass substrate. The evaporation rate and vapour pressure in the chamber were 0.5 nm/s and 4.0 × 10 -4 Pa, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…To correct the over-response in the low-energy range, Manninen et al [23] reported that a filter composed of tin (Sn) is useful for energy compensation in the diagnostic energy range (50-125 keV), while the filter is not required in the radiation therapy energy range (6)(7)(8)(9)(10)(11)(12)(13)(14)(15) MeV) when using commercially available GD-352M and GD-302M (Asahi Techno Glass Corporation) type glasses based on the RPL phenomena.…”

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confidence: 99%

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A comparative study of optical and radiative characteristics of X-ray-induced luminescent defects in Ag-doped glass and LiF thin films and their applications in 2-D imaging

Kurobori

Miyamoto²,

Maruyama

et al. 2014

Nuclear Instruments and Methods in Physics Research Section B:

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We report novel disk-type X-ray two-dimensional (2-D) imaging detectors utilising Ag-doped phosphate glass and lithium fluoride (LiF) thin films based on the radiophotoluminescence (RPL) and photoluminescence (PL) phenomena, respectively. The accumulated X-ray doses written in the form of atomic-scale Ag-related luminescent centres in Ag-doped glass and F-aggregated centres in LiF thin films were rapidly reconstructed as a dose distribution using a homemade readout system. The 2-D images reconstructed from the RPL and PL detectors are compared with that from the optically stimulated luminescence (OSL) detector. In addition, the optical and dosimetric characteristics of LiF thin films are investigated and evaluated. The possibilities of dose distributions with a high spatial resolution on the order of microns over large areas, a wide dynamic range covering 11 orders of magnitude and a non-destructive readout are successfully demonstrated by combining the Ag-doped glass with LiF thin films. Toshio KUROBORI HIGHLIGHTSA novel disk-type Ag-doped glass and LiF thin film detectors based on the RPL and PL phenomena, respectively, were proposed.The capabilities of the 2-D dose images accumulated with a high spatial resolution and a wide dynamic range were demonstrated.The 2-D images reconstructed from the RPL and PL detectors were compared with that from the OSL detector. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 Center, Chiyoda Technol Corporation, 3681 Narita-cho, Oarai-machi, Ibaraki 311-1313, Japan c Pulstec Industrial Corporation, 7000-35 Nakagawa, Hosoe-cho, Kita-ku, Hamamatsu-shi, Shizuoka, 431-1304 Research Highlights ABSTRACTWe report novel disk-type X-ray two-dimensional (2-D) imaging detectors utilising Ag-doped phosphate glass and lithium fluoride (LiF) thin films based on the radiophotoluminescence (RPL) and photoluminescence (PL) phenomena, respectively. The accumulated X-ray doses written in the form of atomic-scale Ag-related luminescent centres in Ag-doped glass and F-aggregated centres in LiF thin films were rapidly reconstructed as a dose distribution using a homemade readout system. The 2-D images reconstructed from the RPL and PL detectors are compared with that from the optically stimulated luminescence (OSL) detector. In addition, the optical and dosimetric characteristics of LiF thin films are investigated and evaluated. The possibilities of dose distributions with a high spatial resolution on the order of microns over large areas, a wide dynamic range covering 11 orders of magnitude and a non-destructive readout are successfully demonstrated by combining the Ag-doped glass with LiF thin films.

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

A comparative study of optical and radiative characteristics of X-ray-induced luminescent defects in Ag-doped glass and LiF thin films and their applications in 2-D imaging

Kurobori

Miyamoto²,

Maruyama

et al. 2014

Nuclear Instruments and Methods in Physics Research Section B:

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“…The experimental details are described elsewhere. 9 The LiF film thickness t was measured by a Tencor Alphastep profilometer.…”

Section: Methodsmentioning

confidence: 99%

Micro and sub‐micro fabrication techniques for optically confined structures based on lithium fluoride

Montereali

Mancini

Martelli

et al. 2001

Applied Organom Chemis

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Lithium fluoride (LiF) films treated by lowenergy electrons represent a very promising candidate for the realization of miniaturized broad band optical devices like active waveguides and microcavities. The main properties, in particular the refractive index, density, structure and microstructure, of polycrystalline LiF films grown by thermal evaporation on amorphous and crystalline substrates are discussed, together with their influence on colour centres formation induced by low-energy electron beam bombardment and on the choice of the main irradiation conditions.

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“…In addition, a comparative study has been performed of the 2D dose images acquired using Ag-activated phosphate glass based on the orange radiophotoluminescence (RPL) of atomic-scale Agrelated species and those acquired using LiF thin films based on the photoluminescence (PL) of F-aggregate colour centres (CCs) (Montereali et al, 1991), and the performances of the two techniques have been evaluated (Kurobori et al, 2014a). These disk-type detectors, with a diameter of 80 mm and a thickness of 1 mm, were rotated at a rate of 2400 rpm (40 Hz).…”

Section: Introductionmentioning

confidence: 99%

A disk-type dose imaging detector based on blue and orange RPL in Ag-activated phosphate glass for 2D and 3D dose imaging applications

Kurobori

Takemura

Miyamoto³

et al. 2015

Radiation Measurements

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A disk-type two-and three-dimensional (2D, 3D) X-ray dose imaging detector was developed based on the radiation-induced silver (Ag)-related species in Ag-activated phosphate glass. This luminescent detector is based on the blue and orange radiophotoluminescence (RPL) phenomena. A comparative study of the steady-and transient-state optical properties of blue and orange RPL, such as the time-resolved luminescence spectra and the RPL decay curves, was performed. In addition, the combination of a confocal optical detection system with a transparent glass detector enables 3D reconstruction through the stacking of dose images collected at different depths within the material. The capabilities of this detector for 2D and 3D dose imaging applications are discussed. Keywords Research Highlights> A disk-type 2D and 3D dose imaging detector based on RPL was developed.> The steady-and transient-state properties of the blue and orange RPL were presented.> The RPL detector is useful for fluorescent nuclear track detection.2

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LiF films: Production and characterization

Cited by 72 publications

References 4 publications

A comparative study of optical and radiative characteristics of X-ray-induced luminescent defects in Ag-doped glass and LiF thin films and their applications in 2-D imaging

A comparative study of optical and radiative characteristics of X-ray-induced luminescent defects in Ag-doped glass and LiF thin films and their applications in 2-D imaging

Micro and sub‐micro fabrication techniques for optically confined structures based on lithium fluoride

A disk-type dose imaging detector based on blue and orange RPL in Ag-activated phosphate glass for 2D and 3D dose imaging applications

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