Luminescence quenching in liquid argon under charged-particle impact: Relative scintillation yield at different linear energy transfers

Hitachi, A.; Doke, T.; Mozumder, A.

doi:10.1103/physrevb.46.11463

Cited by 65 publications

(70 citation statements)

References 33 publications

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“…In this paper, we assume this anti-correlation to strictly hold (which implies no bi-excitonic quenching as suggested for very dense alpha-tracks by Hitachi [10]), and find a number of interesting consequences, not yet discussed in the literature. The first is an absolute calibration of the number of of scintillation (S1) photons emitted (n γ ), given the absolute number of electrons measured with S2 (n e ), by setting ∆n e = ∆n γ for a peak where the mean recombination is shifted by varying the drift field.…”

Section: Recombination and A Better Methods Of Determining Energymentioning

confidence: 99%

Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector

Dahl

Kwong

Bolozdynya

et al. 2007

Nuclear Physics B - Proceedings Supplements

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Section: Recombination and A Better Methods Of Determining Energymentioning

confidence: 99%

Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector

Dahl

Kwong

Bolozdynya

et al. 2007

Nuclear Physics B - Proceedings Supplements

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“…A value for A 2 in liquid Xe can be obtained from literature but the outcome of the calculations are not very dependent on the value of A 2 [21]. On the other hand, the important factors, D 1 , k 1 , and τ 1 , are difficult to obtain.…”

Section: Electronic Quenchingmentioning

confidence: 99%

“…given as an integral form [21]. A value for A 2 in liquid Xe can be obtained from literature but the outcome of the calculations are not very dependent on the value of A 2 [21].…”

Section: Electronic Quenchingmentioning

confidence: 99%

“…The penumbra is a zone of low excitation density, surrounding the core, formed by δ-rays produced in head-on collisions. The quenching model [21] assumes that quenching takes place exclusively in the high excitation density core. The total (electronic) energy T given to the liquid is divided into the core T c and into the penumbra T p .…”

Section: Electronic Quenchingmentioning

confidence: 99%

“…This paper proposes an "electronic" quenching mechanism based on a diffusion-reaction model of free excitons with a specific reaction rate. The model was originally applied to the quenching due to high excitation density in liquid Ar with success [21]. Although it is the self-trapped excitons (dimers) that the scintillate, the "free" excitons play an important role in "electronic" quenching.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Properties of liquid xenon scintillation for dark matter searches

Hitachi

2005

Astroparticle Physics

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The scintillation yields and decay shapes for recoil Xe ions produced by WIMPs in liquid xenon have been examined. A quenching model based on a biexcitonic diffusion-reaction mechanism is proposed for electronic quenching. The total predicted quenching, nuclear and electronic, is compared with experimental results reported for nuclear recoils from neutrons. Model calculations give the average energy to produce a vuv photon, W ph , to be ~75 eV for 60 keV recoil Xe ions. Some aspects of ionization relating to liquid xenon WIMP detectors are also discussed.

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Ultra‐high dose rate dosimetry: Challenges and opportunities for FLASH radiation therapy

et al. 2022

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The clinical translation of FLASH radiotherapy (RT) requires challenges related to dosimetry and beam monitoring of ultra‐high dose rate (UHDR) beams to be addressed. Detectors currently in use suffer from saturation effects under UHDR regimes, requiring the introduction of correction factors. There is significant interest from the scientific community to identify the most reliable solutions and suitable experimental approaches for UHDR dosimetry. This interest is manifested through the increasing number of national and international projects recently proposed concerning UHDR dosimetry. Attaining the desired solutions and approaches requires further optimization of already established technologies as well as the investigation of novel radiation detection and dosimetry methods. New knowledge will also emerge to fill the gap in terms of validated protocols, assessing new dosimetric procedures and standardized methods. In this paper, we discuss the main challenges coming from the peculiar beam parameters characterizing UHDR beams for FLASH RT. These challenges vary considerably depending on the accelerator type and technique used to produce the relevant UHDR radiation environment. We also introduce some general considerations on how the different time structure in the production of the radiation beams, as well as the dose and dose‐rate per pulse, can affect the detector response. Finally, we discuss the requirements that must characterize any proposed dosimeters for use in UDHR radiation environments. A detailed status of the current technology is provided, with the aim of discussing the detector features and their performance characteristics and/or limitations in UHDR regimes. We report on further developments for established detectors and novel approaches currently under investigation with a view to predict future directions in terms of dosimetry approaches, practical procedures, and protocols. Due to several on‐going detector and dosimetry developments associated with UHDR radiation environment for FLASH RT it is not possible to provide a simple list of recommendations for the most suitable detectors for FLASH RT dosimetry. However, this article does provide the reader with a detailed description of the most up‐to‐date dosimetric approaches, and describes the behavior of the detectors operated under UHDR irradiation conditions and offers expert discussion on the current challenges which we believe are important and still need to be addressed in the clinical translation of FLASH RT.

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Luminescence quenching in liquid argon under charged-particle impact: Relative scintillation yield at different linear energy transfers

Cited by 65 publications

References 33 publications

Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector

Performance and Fundamental Processes at Low Energy in a Two-Phase Liquid Xenon Dark Matter Detector

Properties of liquid xenon scintillation for dark matter searches

Ultra‐high dose rate dosimetry: Challenges and opportunities for FLASH radiation therapy

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