From nGy to MGy - New dosimetry with LiF:Mg,Cu,P thermoluminescence detectors

Journal Article · Mon May 06 04:00:00 EDT 2013 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4804076· OSTI ID:22111955

Obryk, Barbara ^[1]

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1. Institute of Nuclear Physics (IFJ), Polish Academy of Sciences Radzikowskiego 152, 31-342 Krakow (Poland)

One of the well known advantages of thermoluminescence (TL) detectors made of lithium fluoride doped with magnesium, copper and phosphorus (LiF:Mg,Cu,P) is their very high sensitivity to ionizing radiation. LiF:Mg,Cu,P detectors enable measurements of radiation doses from tens of nanograys up to a few kilograys, when the total saturation of the signal of the so-called main dosimetric peak occurs. Only recently, unprecedented high-temperature emission of LiF detectors heated to temperatures up to 600 Degree-Sign C, was observed after exposures to radiation doses ranging from 1 kGy to 1 MGy. For quantification of the glow-curve shape changes of LiF:Mg,Cu,P detectors in this range of doses and determination of the absorbed dose, the Ultra-High Temperature Ratio coefficient (UHTR) was defined. This newly established dosimetric method was tested in a range of radiation qualities, such as gamma radiation, electron and proton beams, thermal neutron fields and high-energy mixed fields around the SPS and PS accelerators at CERN. The new method for ultra-high dose range monitoring with a single LiF:Mg,Cu,P detector, which is capable of covering at least twelve orders of magnitude of doses, can be used for dosimetry at high energy accelerators, thermonuclear fusion technology facilities and has great potential for accident dosimetry in particular. A number of dosimetric sets with LiF:Mg,Cu,P detectors are currently installed around the LHC at CERN.

• OSTI ID: 22111955
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1529; ISSN 0094-243X; ISSN APCPCS
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
61 RADIATION PROTECTION AND DOSIMETRY
CERN LHC
COPPER
DOPED MATERIALS
GAMMA RADIATION
GLOW CURVE
LITHIUM FLUORIDES
MAGNESIUM
PROTON BEAMS
RADIATION DOSES
RADIATION MONITORING
RADIATION QUALITY
SCINTILLATION COUNTERS
SENSITIVITY
THERMAL NEUTRONS
THERMOLUMINESCENCE
THERMOLUMINESCENT DOSEMETERS
THERMOLUMINESCENT DOSIMETRY