The development of a super-fine-grained nuclear emulsion

Asada, Takashi; Naka, Takashi; Kuwabara, Kei; Yoshimoto, Masahiro

doi:10.1093/ptep/ptx076

Cited by 40 publications

(31 citation statements)

References 7 publications

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“…The detector is surrounded by a shielding from environmental and cosmogenic background source suppression and it will be placed on an equatorial telescope in order to keep its orientation towards Cygnus constellation fixed, where the WIMP wind is supposed to come from. NEWSdm detector, located in the Gran Sasso Underground Laboratory, is made of a new kind of nuclear emulsions, called NIT or U-NIT (Nano Imaging Trackers or Ultra Nano Imaging Trackers) [7], with AgBr crystals of nanometric size immersed in an organic gelatine. The passage of a charged particle through the emulsion produces along its path atomic scale perturbations, called latent images.…”

Section: Newsdm Detectormentioning

confidence: 99%

SuperNova neutrino physics with nuclear emulsion detectors

Gentile¹,

Lellis²,

Crescenzo³

et al. 2018

Proceedings of XVII International Workshop on Neutrino Telescopes — PoS(NEUTEL2017)

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Supernova explosions are very powerful phenomena occurring in the space. Although the observation of these events is very rarely achieved, the new generation of ton-scale detectors for dark matter search are sensitive to neutrinos coming for supernovae which can also represent a serious and unremoveable background source. A directional detector based on nuclear emulsions provides the unique capability to observe neutral current interactions of neutrinos originated by a supernova explosion. NEWSdm is a detector based on nuclear emulsions made of nanometric size crystals which can make the reconstruction of trajectories with path lengths down to 50 nm possible if analyzed by means of microscopes with enough resolution.

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Section: Newsdm Detectormentioning

confidence: 99%

SuperNova neutrino physics with nuclear emulsion detectors

Gentile¹,

Lellis²,

Crescenzo³

et al. 2018

Proceedings of XVII International Workshop on Neutrino Telescopes — PoS(NEUTEL2017)

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“…Because the typical spatial resolution of a nuclear emulsion is related to the average distance between grains, a spatial resolution of less than 100 nm can be achieved using a fine-grained nuclear emulsion. A Silver halide with a grain size of 40 nm is used for preparing a fine-grained nuclear emulsion to search for dark matter [ 7 , 8 , 9 ]. The sensitivity of these emulsions is adjusted such that they are not sensitive to minimum ionizing particles and gamma rays.…”

Section: Introductionmentioning

confidence: 99%

“…The calculated ranges in the emulsion layer were

m for

particles and

m for Li. These values were calculated using SRIM based on the composition of the emulsion described in [ 8 ], assuming a uniform dispersion of silver halide crystals in gelatin owing to its protective colloidal properties, and averaging over the composition throughout the volume of the emulsion layer. Because the track is approximately 5

m, it is possible to use this detector for image detection with a spatial resolution of less than 5

m without track analysis.…”

Section: Introductionmentioning

confidence: 99%

Neutron Imaging Using a Fine-Grained Nuclear Emulsion

et al. 2021

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A neutron detector using a fine-grained nuclear emulsion has a sub-micron spatial resolution and thus has potential to be applied as high-resolution neutron imaging. In this paper, we present two approaches to applying the emulsion detectors for neutron imaging. One is using a track analysis to derive the reaction points for high resolution. From an image obtained with a 9 μm pitch Gd grating with cold neutrons, periodic peak with a standard deviation of 1.3 μm was observed. The other is an approach without a track analysis for high-density irradiation. An internal structure of a crystal oscillator chip, with a scale of approximately 30 μm, was able to be observed after an image analysis.

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“…Подобная проблема исследуется, например, в работе по поиску темной материи в университете Нагоя, Япония. [9,10]. Правда, там речь идет о регистрации короткопробежных частиц.…”

Section: Introductionunclassified

Разработка Высокоразрешающих Фотоматериалов НИЦ "Курчатовский Институт" Для Ядерных Исследований

Рябова¹,

Балыш²,

Пономарев³

et al. 2021

Журнал Технической Физики

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В ходе программы разработки фотографических материалов высокого разрешения для исследований по физике нейтрино показана возможность получения ядерной эмульсии с разрешающей способностью, превосходящей известные материалы в 5 раз. Чувствительность в таких материалах сохраняется на высоком уровне, достаточном для регистрации ядерного излучения. При увеличении концентрации галоидного серебра до 80 wt.% ядерные фотоматериалы можно будет использовать для решения многих физических задач. Ключевые слова: фотографические материалы, разрешающая способность, ядерная фотоэмульсия, физика нейтрино, галоидное серебро.

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The development of a super-fine-grained nuclear emulsion

Cited by 40 publications

References 7 publications

SuperNova neutrino physics with nuclear emulsion detectors

SuperNova neutrino physics with nuclear emulsion detectors

Neutron Imaging Using a Fine-Grained Nuclear Emulsion

Разработка Высокоразрешающих Фотоматериалов НИЦ "Курчатовский Институт" Для Ядерных Исследований

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