TH-C-BRB-02: Determination of Average LET of Therapeutic Proton Beams Using A12O3:C Optically Stimulated Luminescence (OSL) Detectors

2010 ◽  
Vol 37 (6Part28) ◽  
pp. 3453-3453
Author(s):  
G Sawakuchi ◽  
N Sahoo ◽  
P Gasparian ◽  
M Rodriguez ◽  
L Archambault ◽  
...  
Keyword(s):  
Optically Stimulated Luminescence ◽  
Proton Beams

Corrigendum: Determination of average LET of therapeutic proton beams using Al2O3:C optically stimulated luminescence (OSL) detectors (2010 Phys. Med. Biol. 55 4963)

2014 ◽  
Vol 59 (12) ◽  
pp. 3239-3240
Author(s):  
Gabriel O Sawakuchi ◽  
Narayan Sahoo ◽  
Patricia B R Gasparian ◽  
Mathew G Rodriguez ◽  
Louis Archambault ◽  
...  
Keyword(s):  
Optically Stimulated Luminescence ◽  
Proton Beams

Determination of average LET of therapeutic proton beams using Al2O3:C optically stimulated luminescence (OSL) detectors

2010 ◽  
Vol 55 (17) ◽  
pp. 4963-4976 ◽  
Author(s):  
Gabriel O Sawakuchi ◽  
Narayan Sahoo ◽  
Patricia B R Gasparian ◽  
Matthew G Rodriguez ◽  
Louis Archambault ◽  
...  
Keyword(s):  
Optically Stimulated Luminescence ◽  
Proton Beams

scholarly journals Dating mortar by optically stimulated luminescence: A feasibility study

2011 ◽  
Vol 38 (1) ◽  
pp. 42-49 ◽  
Author(s):  
Christian Goedicke
Keyword(s):  
Dose Rate ◽  
Short Range ◽  
Optically Stimulated Luminescence ◽  
Radioactive Equilibrium ◽  
Lime Mortar ◽  
Modulation Techniques ◽  
Single Grain ◽  
Optical Bleaching ◽  
Number Of Publications

AbstractQuartz is the datable component in mortar. Although its luminescence properties are very well studied, the problem of mortar dating arises from a low level of optical bleaching. In order to reduce the time consuming efforts for dating lime mortar in monuments by optically stimulated luminescence, we investigated the most suitable methods of dose and dose rate determination, and we explored tests which are suitable to predict the datability of a given material. Reverting to the large number of publications on sedimentary partially bleached quartz we found linear modulation techniques especially useful, equally we also recommend the determination of the level of optical depletion before starting analyses. Single grain analysis is regarded as an ultimate but infallible tool to date very poorly bleached quartz from mortar. Dose rate measurements need to take into account the radioactive equilibrium of the uranium decay and the short range inhomogeneity of the environmental gamma radiation field: gamma spectrometry and on-site TLD measurements are best suited.

Determination of the airw-value in proton beams using ionization chambers with gas flow capability

2000 ◽  
Vol 27 (10) ◽  
pp. 2363-2368 ◽  
Author(s):  
M. F. Moyers ◽  
S. M. Vatnitsky ◽  
D. W. Miller ◽  
J. M. Slater
Keyword(s):  
Gas Flow ◽  
Ionization Chambers ◽  
Proton Beams

WE-D-17A-06: Optically Stimulated Luminescence Detectors as ‘LET-Meters’ in Proton Beams

2014 ◽  
Vol 41 (6Part29) ◽  
pp. 497-498
Author(s):  
D Granville ◽  
N Sahoo ◽  
GO Sawakuchi
Keyword(s):  
Optically Stimulated Luminescence ◽  
Proton Beams ◽  
Luminescence Detectors

A dosimetric analysis of proton beam therapy using different snouts

2018 ◽  
Vol 18 (02) ◽  
pp. 180-185
Author(s):  
Khalid Iqbal ◽  
Qurat-ul-ain Shamsi ◽  
Kent A Gifford ◽  
Sania Anum ◽  
Saeed Ahmad Buzdar
Keyword(s):  
Proton Beam ◽  
Modulation Depth ◽  
Proton Beam Therapy ◽  
Proton Beams ◽  
Mean Values ◽  
Water Phantom ◽  
Beam Output ◽  
Dosimetric Analysis ◽  
The Given

AbstractPurposeThis exploration is intended to analyse the dosimetric characteristics of proton beams of multiple energies using different snout sizes.Materials and methodsA synchrotron was used for the extraction of eight proton beam energies (100–250 MeV). Dosimetric measurements were taken in a water phantom that was irradiated with a proton beam emanating from the gantry system at angles 0, 90, 180 and 270 degree using a large and a medium snout. The range of beam energies in the phantom, their corresponding centre modulation depth (CMD) and the width of spread out Bragg peak (SOBP) were measured by Markus chamber. Double scattering technique was employed for the creation of SOBPs.ResultsThe range of proton beams varied from 4·3 cm for 100 MeV beam to 28·5 cm for 250 MeV beam with the medium snout and from 4·3 cm for 100 MeV to 25 cm for 250 MeV beam with large snout in the water phantom. SOBP width showed a variation from 4 to 10 cm with medium and large snout. While determining the output with medium snout, the discrepancy of 1·1% was observed between the maximum and minimum mean values of output for all the given set of energies and angles. There occurred a difference of 0·9% between the maximum and minimum mean values of output with the large snout. Beam output at SOBP centre was 12% higher with large snout as compared to that with medium snout for all the given beam energies. Flatness and symmetry were found within ±2·5% tolerance limits with medium and large snouts.ConclusionFlatness and symmetry were found within explicit limits with both medium and large snouts. Large snout produced higher beam output than that of medium snout at the centre of SOBP. This exploration can be extended to the determination of beam output, flatness and symmetry with a small snout.

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