2020
DOI: 10.1002/mp.14600
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Imaging of polarized components of Cerenkov light and luminescence of water during carbon‐ion irradiation

Abstract: Purpose The luminescence image of water during the irradiation of carbon ions showed higher intensity at shallow depths than dose distribution due to the contamination of Cerenkov light from secondary electrons. Since Cerenkov light is coherent and polarized for the light produced during the irradiation of carbon ions to water, the reduction of Cerenkov light may be possible with a polarizer. In addition, there is no information on the polarization of the luminescence of water. To clarify these points, we meas… Show more

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Cited by 4 publications
(9 citation statements)
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References 16 publications
(35 reference statements)
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“…Similarly, Yamamoto and al. pursued promising Cherenkov signal removal using a set of two perpendicular polarizers for carbon-ion irradiation 17 . Given the results obtained from our AoLP analysis, that approach method should work on the beam central axis where Cherenkov radiation is mostly emitted at 0 .…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…Similarly, Yamamoto and al. pursued promising Cherenkov signal removal using a set of two perpendicular polarizers for carbon-ion irradiation 17 . Given the results obtained from our AoLP analysis, that approach method should work on the beam central axis where Cherenkov radiation is mostly emitted at 0 .…”
Section: Discussionmentioning
confidence: 99%
“…While Cherenkov spectra and intensity are well known, fewer work have looked into characterizing and using the Cherenkov radiation polarization state despite the anticipated benefits in using additional information. For example, the use of a set of two perpendicular polarizers enabled Cherenkov signal subtraction from fluorescence for carbon ion irradiation 17 .…”
Section: Introductionmentioning
confidence: 99%
“…These procedures were basically identical to those previously used for the luminescence imaging of water. 9,[12][13][14][15][16] The actual physical size in the images was 1.0 mm/pixel. The width of the profiles in the measured images was 20 mm.…”
Section: Image Processingmentioning
confidence: 99%
“…A recent work has investigated Cherenkov signal subtraction from fluorescence using a set of two perpendicular polarizers, in the context of carbon ion irradiation. 13 As Cherenkov radiation polarization vector is related to the Cherenkov emission cone and thus its direction, 14 our work explores the underlying potential of polarization imaging to resolve the Cherenkov signal anisotropy and achieve direct inwater dose measurements. This letter presents a novel and innovative approach that measures polarization state and angle in order to accurately measure dose based on the Cherenkov signal at any depth or position in a water tank.…”
Section: Introductionmentioning
confidence: 99%
“…Cherenkov emission spectra and intensity are currently well characterized in the context of dose measurements, but little work has been done regarding using its polarization state. A recent work has investigated Cherenkov signal subtraction from fluorescence using a set of two perpendicular polarizers, in the context of carbon ion irradiation 13 . As Cherenkov radiation polarization vector is related to the Cherenkov emission cone and thus its direction, 14 our work explores the underlying potential of polarization imaging to resolve the Cherenkov signal anisotropy and achieve direct in‐water dose measurements.…”
Section: Introductionmentioning
confidence: 99%