Deformation luminescence produced during application and release of pressure on to gamma-irradiated CaF2:RE crystals.

Abstract:

:Calcium fluoride CaF2 is an interesting host lattice for rare earth (RE) activators. CaF2 crystals doped with different concentrations of Dy, Ce, Er and Gd have been grown by the Bridgman technique and their deformation luminescence (DL) induced by room temperature gamma irradiation has been recorded. When a uniaxial pressure is applied on to gamma-irradiated CaF2:RE crystals, initially the DL intensity increases with time, attains a maximum value and then it decreases with time. Although the DL intensity produced during the release of pressure is less, its rise and decay behaviours are similar to that obtained during the application of pressure. The DL intensity depends on dopant, concentration of dopant, irradiation doses and mass of the load or applied pressure. It is suggested that the moving dislocation produced during deformation of crystals capture holes from hole trapped centres (like perturbed Vk centre) and the subsequent radiative recombination of the dislocation holes with electrons give rise to DL.

journal_name

Radiat Prot Dosimetry

authors

Kher RS,Brahme N,Banerjee M,Dhoble SJ,Khokhar MS

doi

10.1093/rpd/nci606

subject

Has Abstract

pub_date

2006-01-01 00:00:00

pages

62-5

issue

1-4

eissn

0144-8420

issn

1742-3406

pii

nci606

journal_volume

119

pub_type

杂志文章
  • Dose-image quality optimisation in digital chest radiography.

    abstract::A range of techniques has been developed in conventional radiography for the chest, because of technical difficulties in imaging the wide variation of tissue densities. These techniques can differ significantly in tube potential selection, for scatter reduction and in application of manual or automatic exposure contro...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nch546

    authors: Doyle P,Martin CJ,Gentle D

    更新日期:2005-01-01 00:00:00

  • Considerations and preliminary design of patient exposure registry.

    abstract::To aid in protecting patients from unnecessary exposures and to reduce radiation burdens to the public, a system for tracking a patient's medical exposure history and related radiation doses would be a useful tool. A patient-centred exposure registry, the Patient Exposure Registry (PER), is a mechanism that provides t...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncq280

    authors: Chen J,Moir D,Cornett J

    更新日期:2010-12-01 00:00:00

  • Migration of global radioactive fallout to the Arctic Ocean (on the example of the Ob's river drainage basin).

    abstract::This article provides an assessment of the impact of global fallout on (137)Cs contamination in the bottom sediments of Kara Sea. The erosiveness of 10th-level river basins was estimated by landscape-geochemical and geomorphological characteristics. All 10th-level basins (n=154) were separated into three groups: mount...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncs195

    authors: Miroshnikov A,Semenkov I

    更新日期:2012-11-01 00:00:00

  • EFFECT OF PATIENT SIZE, ANATOMICAL LOCATION AND MODULATION STRENGTH ON DOSE DELIVERED AND IMAGE-QUALITY ON CT EXAMINATION.

    abstract::To study the effect of patient size, anatomical location and modulation strength (MS) on image-quality and delivered dose of CT scans acquired with automatic-exposure-control system (AEC). Four anthropomorphic phantoms (three paediatric and one thin adult) were studied, and normal and obese adults were simulated by pl...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncx055

    authors: Greffier J,Larbi A,Macri F,Beregi JP,Pereira F

    更新日期:2017-12-01 00:00:00

  • Indoor radon measurements in Turkey dwellings.

    abstract::In this work, indoor radon radioactivity concentration levels have been measured in dwellings of Turkey within the frame of the National Radon Monitoring Programme. The (222)Rn concentrations were measured with time-integrating passive nuclear etched track detectors in 7293 dwellings in 153 residential units of 81 pro...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncu329

    authors: Celebi N,Ataksor B,Taskın H,Bingoldag NA

    更新日期:2015-12-01 00:00:00

  • Patient dosimetry in nuclear medicine.

    abstract::In diagnostic nuclear medicine, the biokinetics of the radiopharmaceutical (actually of the radionuclide) is determined for a number of representative patients. At therapy, it is essential to determine the patient's individual biokinetics of the radiopharmaceutical in order to calculate the absorbed doses to critical ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncv061

    authors: Mattsson S

    更新日期:2015-07-01 00:00:00

  • High patient doses in interventional cardiology due to physicians' negligence: how can they be prevented?

    abstract::Interventional cardiology procedures are usually associated with high patient doses and even deterministic radiation effects may occur. Expensive digital flat panels are preferably used to lower doses, and Athens General Hospital has recently installed one. However, this study shows that it is the cardiologists' pract...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncn005

    authors: Mavrikou I,Kottou S,Tsapaki V,Neofotistou V

    更新日期:2008-01-01 00:00:00

  • Dose assessment for ingestion of a 330 kilobecquerel 60Co hot particle.

    abstract::On leaving the irradiated fuel bay at Pickering A nuclear power station, a worker triggered a whole body monitor alarm with activity in or on his head, and despite careful decontamination techniques he subsequently swallowed a hot particle. Over the next 3 d, the radioactivity was tracked through the body. It was then...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncm256

    authors: Whillans DW,Chase WJ,Wolodarsky WH

    更新日期:2007-01-01 00:00:00

  • NATURAL RADIONUCLIDES IN AGRICULTURAL PLANTS FROM NORTHERN THAILAND.

    abstract::Thailand is predominantly an agricultural country. The Northern Region occupies the second largest cultivated land area in the country. To establish baseline data for future environmental monitoring, seventy-nine plant samples including vegetables, fruits and tobaccos and their relevant soils were collected from the m...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncz081

    authors: Kritsananuwat R,Kranrod C,Chanyotha S,Ploykrathok T,Sriploy P

    更新日期:2019-10-01 00:00:00

  • Neutron dose distribution at the GSI fragment separator.

    abstract::GSI is operating a facility for the production of rare isotopes. Nuclei are produced by fragmentation or fission of the impinging heavy ions with energies of approximately 1 GeV per nucleon. The major part of the primary beam and the produced nuclei is deposited in the components of the Fragment Separator (FRS) and ge...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nch210

    authors: Fehrenbacher G,Festag JG

    更新日期:2004-01-01 00:00:00

  • Fast neutron spectrometry and dosimetry using a spherical moderator with position-sensitive detectors.

    abstract::A neutron spectrometry and dosimetry measurement system has been developed based on a different design of the divided regions for a sphere, with three position-sensitive counters. The characteristics of the measurement system have been investigated in the reference radiation fields of Am-Be and (252)Cf sources. When r...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncl077

    authors: Li T,Yang L,Ma J,Fang D

    更新日期:2007-01-01 00:00:00

  • Measurement of the magnetic fields of high-voltage substations (230 kV) in Tehran (Iran) and comparison with the ACGIH threshold limit values.

    abstract::Measurements were made according to IEEE standard 644-1994 at a height of 1 m above floor level. It is concluded that none of the measurements exceeded the ACGIH threshold limit value. Among all control rooms the highest measured density amount is 0.69 μT in the control room of Ozgol substation and the lowest is 0.2 μ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncq445

    authors: Fard MS,Nasiri P,Monazzam MR

    更新日期:2011-06-01 00:00:00

  • PRACTICAL METHODS FOR INTERNAL DOSE ASSESSMENT FOR RADIOIODINE INTAKE AFTER THYROID BLOCKING: CLASSIFICATION OF DEGREE OF BLOCKAGE AND DETERMINATION OF INSENSITIVE MEASUREMENT POINT.

    abstract::Iodine thyroid blocking (ITB) suppresses the uptake of iodine to the thyroid and reduces internal doses after radioiodine intake; however, its disturbance of thyroid biokinetics causes considerable uncertainty in the use of dosimetric data intended for assessment of unblocked normal thyroid. To more accurately assess ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncz139

    authors: Kwon TE,Park M,Jung GH,Chung Y,Ha WH,Jin YW

    更新日期:2019-12-31 00:00:00

  • Radioactive pollution from Fukushima Daiichi nuclear power plant in the terrestrial environment.

    abstract::Major contaminants from venting and hydrogen explosions at the Fukushima Daiichi nuclear reactors between 12 and 15 March 2011 were transported northwestward and deposited on soil and plants via precipitation. Surface soils and plant leaves were sampled at 64 sites in the Fukushima Prefecture. The highest concentratio...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncs222

    authors: Tazoe H,Hosoda M,Sorimachi A,Nakata A,Yoshida MA,Tokonami S,Yamada M

    更新日期:2012-11-01 00:00:00

  • Indoor radon measurements in the dwellings of Punjab and Himachal Pradesh, India.

    abstract::The measurement of indoor radon concentrations were performed in the dwellings of the Punjab and Himachal Pradesh, India by using LR-115 type II Solid-State Nuclear Track Detectors in the bare mode. The annual average indoor radon concentrations in the dwellings are found to vary from 114 to 400 Bq m(-3) with an avera...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nct041

    authors: Rani A,Singh S,Duggal V

    更新日期:2013-01-01 00:00:00

  • HOW DO HOSPITAL STERILISATION PROCEDURES AFFECT THE RESPONSE OF PERSONAL EXTREMITY RINGS AND OF EYE LENS TL DOSEMETERS?

    abstract::Stringent standards of hygiene must be applied in medical institutions, especially at operating blocks or during interventional radiology procedures. Medical equipment, including personal dosemeters that have to be worn by medical staff during such procedures, needs therefore to be sterilised. In this study, the effec...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncv539

    authors: Kopeć R,Bubak A,Budzanowski M,Sas-Bieniarz A,Szumska A

    更新日期:2016-09-01 00:00:00

  • Dose imaging with gel-dosemeter layers: optical analysis and dedicated software.

    abstract::In radiotherapy involving thermal and epithermal neutrons, the knowledge of dose distributions, with separation of the contribution of each secondary radiation component, is of utmost importance. Layers of Fricke-Xylenol-Orange-infused gel dosemeters give the possibility of achieving such requirements because, owing t...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nci625

    authors: Gambarini G,Carrara M,Gay S,Tomatis S

    更新日期:2006-01-01 00:00:00

  • 1st International comparison measurement on assessing the diffusion coefficient of radon.

    abstract::Radon diffusion coefficient is a material parameter which is usually used in the radon mitigation measures design. There are different approaches used for radon diffusion coefficient measurement and assessment. The International comparison measurement which was jointly organised by National Radiation Protection Instit...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncr079

    authors: Rovenska K,Jiránek M

    更新日期:2011-05-01 00:00:00

  • SAR distribution in human beings when using body-worn RF transmitters.

    abstract::This study analyzes the exposure of the human torso to electromagnetic fields caused by wireless body-mounted or handheld devices. Because of the frequency and distance ranges from 30-5800 MHz and 10 to 200 mm, respectively, both near-field and far-field effects are considered. A generic body model and simulations of ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncm377

    authors: Christ A,Samaras T,Neufeld E,Klingenböck A,Kuster N

    更新日期:2007-01-01 00:00:00

  • Characterization Of A Lanthanum Bromide Detector For Eye Lens Dosimetry At The Candu Nuclear Power Plants Based On Direct Measurements Of The Gamma-Ray Spectra.

    abstract::Gamma-ray spectra were measured using a LaBr$_{3}$(Ce) spectrometer during the outage periods, aiming at quantifying the gamma source term of radiation workers' exposure, at the CANDU nuclear power reactors, for the purposes of eye lens dosimetry. The spectra were measured inside the boiler rooms, of the Bruce Power a...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncaa186

    authors: Laranjeiro AS,Bohra F,Byun SH,Atanackovic J,Hanu AR

    更新日期:2020-12-15 00:00:00

  • Microdosimetric modelling of the response of thermoluminescence detectors to low- and high-LET ionising radiation.

    abstract::The microdosimetric one hit detector model was applied to calculate the dose response, energy response and relative thermoluminescence (TL) efficiency, eta, of high sensitive LiF:Mg,Cu,P and Al(2)O(3):C detectors after their irradiations by X rays, gamma rays, beta electrons and heavy charged particles (HCP). Microdos...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncl467

    authors: Olko P,Bilski P,Budzanowski M,Czopyk L,Swakon J,Waligorski MP

    更新日期:2006-01-01 00:00:00

  • A survey on uncertainty in bioassay measurements carried out within the OMINEX project.

    abstract::One of the topics covered by the OMINEX (Optimisation of Monitoring for Internal Exposure) project was to look at the bioassay measurements performed in the European laboratories. Questionnaires on bioassay measurements by alpha spectrometry or inductively coupled plasma-mass spectrometry (ICP-MS) were sent to Europea...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/oxfordjournals.rpd.a006261

    authors: Hurtgen C,Cossonnet C

    更新日期:2003-01-01 00:00:00

  • Assessment of gamma dose rates in air in Adana/Turkey.

    abstract::This study assesses the outdoor gamma absorbed dose levels in air of the Adana's region. The measurements were taken from 130 different sample points in this area by Eberline Smart Portable (ESP-2) with SPA-6 plastic scintillation detector. The outdoor gamma absorbed dose rates order from 40 to 145 nGy h(-1). Average ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncn295

    authors: Degerlier M,Ozger G

    更新日期:2008-01-01 00:00:00

  • Determinants of exposure to electromagnetic fields from mobile phones.

    abstract::In actual conditions of use, the power radiated from cellular phones changes during conversation depending on several factors. Upon request from the radio base station (RBS), the phone in fact, reduces, its power to a level that is deemed optimum for the quality of conversation. In this study, special phones, which ha...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nch062

    authors: Ardoino L,Barbieri E,Vecchia P

    更新日期:2004-01-01 00:00:00

  • Natural radioactivity measurements in building materials used in Samsun, Turkey.

    abstract::In this study, radioactivity levels of 35 different samples of 11 commonly used building materials in Samsun were measured by using a gamma spectrometry system. The analysis carried out with the high purity Germanium gamma spectrometry system. Radioactivity concentrations of (226)Ra, (232)Th and (40)K range from 6 to ...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nct047

    authors: Tufan MÇ,Disci T

    更新日期:2013-01-01 00:00:00

  • A DISCUSSION ON ISSUES WITH RADON IN DRINKING WATER.

    abstract::The majority of the world's population relies on surface water or large public supply systems of groundwater, where radon is low and a guidance value for radon in drinking water is not necessary. However, the International Commission on Radiological Protection (ICRP) recently issued a dose coefficient for radon ingest...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncz035

    authors: Chen J

    更新日期:2019-12-31 00:00:00

  • INTERCAL: long-term inter-comparison experiment for dose rate and spectrometric probes.

    abstract::The Schauinsland inter-calibration facility (INTERCAL) has been designed to enable long-term comparison experiments for 20 different dose rate probes from different networks. Two reference probes characterised by the European Radiation Dosimetry WG3 inter-calibration experiments in 2008 and 2009 have been installed at...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncu039

    authors: Bleher M,Doll H,Harms W,Stöhlker U

    更新日期:2014-08-01 00:00:00

  • Survey of patient dose in computed tomography in Syria 2009.

    abstract::The radiation doses to patient in computed tomography (CT) in Syria have been investigated and compared with similar studies in different countries. This work surveyed 30 CT scanners from six different manufacturers distributed all over Syria. Some of the results in this paper were part of a project launched by the In...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncq155

    authors: Kharita MH,Khazzam S

    更新日期:2010-09-01 00:00:00

  • Patient dose in digital projection radiography.

    abstract::In projection radiography, two types of digital imaging systems are currently available, computed radiography (CR) and direct radiography (DR): a difference between them can be stated in terms of dose and image quality. In the Radiology Emergency Department of our hospital, a flat-panel DR equipment (Siemens Axiom Ari...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/ncn013

    authors: Compagnone G,Pagan L,Baleni MC,Calzolaio FL,Barozzi L,Bergamini C

    更新日期:2008-01-01 00:00:00

  • Reconstruction of cluster distributions at 100% detection efficiency for a track-nanodosimetric counter through a Bayesian analysis.

    abstract::A Bayesian unfolding has been applied to ionisation distributions due to 5.4 MeV alpha particles in a 20-nm site obtained using Monte Carlo simulations, taking into account different detection efficiency conditions. The ideal case of a target volume with uniform efficiency has been investigated to study the dependence...

    journal_title:Radiation protection dosimetry

    pub_type: 杂志文章

    doi:10.1093/rpd/nch143

    authors: De Nardo L,Lesimple M,Canella S,Grosswendt B

    更新日期:2004-01-01 00:00:00