Interactions of neutrinos with matter

Vannucci, F.

doi:10.1016/j.ppnp.2017.03.003

Cited by 7 publications

(5 citation statements)

References 78 publications

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“…It has been realised that neutrinos at high energies leave heavy nuclei at higher excitation energies, making them vulnerable for fission decay 4,5 . Furthermore, significant research has been aimed to study neutrino interactions with matter 6 . Neutrino interactions with radionuclides have been proposed and their reaction crosssections have been theorised and studied 7,8 .…”

Section: Introductionmentioning

confidence: 99%

Significance of Neutrino Environments on Neutrino-Induced Fission and Neutron-Induced Fission Processes

Ali¹

2020

Preprint

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This paper presents Mathematical Formulation for Neutrino-Fission of a heavy nuclei in Neutrino-environments. It has been proposed that neutrino fission is a dynamic two-process reaction, where more than one neutrino can be captured by target nucleus. A quantity named Neutrino-Zeta with units of eV-1 has been defined to represent Neutrino-environments. Neutrino-zeta with assumed excited energy states for heavy nuclei A&sim;230-270 is estimated to be 0.0212 MeV-1, with the probability of fission Barrier energy state P(Ex,f)= 0.169064014 with Ex,f =6MeV. P(Ex,f)=0.222664 is highest at zeta=0.1MeV-1 . It has been shown that probabilities of certain excitation energy states and their corresponding decay reactions at those excitation energies can be equal for two neutrino-zetas. Neutron induced fission for different neutrinos hypothesize that probability of symmetric fission channels is higher at low neutrino-zetas, which can be tested experimentally.

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Section: Introductionmentioning

confidence: 99%

Significance of Neutrino Environments on Neutrino-Induced Fission and Neutron-Induced Fission Processes

Ali¹

2020

Preprint

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“…Sudbury Neutrino Observatory Collaboration has experimentally proven that distinct neutrino flavors have distinct masses. Furthermore, vast research has been aimed to study neutrino interactions with matter 5 . Neutrino interactions with the radionuclides have been proposed 6,8 and their corresponding microscopic cross-sections have been theorized and studied 7,8 .…”

Section: Introductionmentioning

confidence: 99%

On the Free Neutron Decay with Neutrino(s) Interactions

Ali¹

2019

Preprint

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This paper proposes a mechanism for the decay of free neutron with interactions with neutrino(s). A mathematical framework is developed using canonical ensemble framework for the interactions. Probability distribution of neutron discrete energy states has been derived which is a function of neutrino-zeta – a macroscopic property of neutrinos. Consequently, a relationship between neutron decay constant and probability of neutron beta decay is provided, assuming linear proportionality. Furthermore, qualitative explanation of neutron lifetime puzzle, where discrepancy in lifetime measurements based on measurement method (Bottle vs Beam), is related to neutrino microscopic cross-sections. In addition, inverse beta-decay reaction of proton and beta-negative and beta-positive reaction of radionuclides have been analyzed using the proposed mechanism. The probabilities of beta-negative and beta-positive reactions in nature are qualitatively in agreement with the proposed mechanism. Lastly, way to test the mechanism experimentally with reactor neutrinos and neutrino beams has been presented.

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“…机械工程学报第 55 卷第 12 期期 92 0 前言江门中微子试验(JUNO) [1][2] 主要对反应堆中产生的中微子进行探测。其原理为中微子通过与靶物质反应而发光，光电倍增管(Photomultiplier tube， PMT)能够收集反应得到的微弱信号，从而探测中微子各种物理性质 [3] 。本文所涉及的 508 mm(20 in)光电倍增管 [4][5][6] 长期放置在温度为 20 ℃深 40 m 的水下，因此需要对光电倍增管后端的电子学进行封装，图 1 为一种被称为 MCP-PMT 的 508 mm(20 in)光电倍增管。由于 MCP-PMT 为国内首创，和日本 hamamatsu 508 mm(20 in) PMT [7] [11][12]…”

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Analysis of Glass Shell's Thermal Stress Based on Orthogonal Experiment

Xiaohui¹,

Ma²,

Qin³

et al. 2019

Journal of Mechanical Engineering

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：In order to understand the glass shell's stress of PMT applied in the Jiangmen Underground Neutrino Observation (JUNO) under temperature load to avoid glass shell breakage, the effect of different potting adhesives on the glass's thermal stress is simulated.In the orthogonal test, the material's elastic modulus, Poisson ratio and thermal expansion coefficient are selected as the research factors. The L 25 (5 3 ) orthogonal array is established and there are total 25 sets of numerical simulation schemes. According to the results of range analysis and variance analysis, the primary factor affecting glass's thermal stress is modulus and thermal expansion coefficient. The secondary factor is the Poisson ratio. The elastic modulus has a significant effect on the thermal stress of glass shell.The thermal expansion coefficient has a certain effect on the thermal stress of glass shell. And Poisson's ratio has no significant effect on the thermal stress of glass shell. Curve fitting for the arithmetic mean of each factor level is done and a sensitivity analysis method based on the analytic solution of fitting function is proposed to obtain the sensitive of the design index to each factor. The material modification can be carried out according to the maximum sensitivity parameter. So the selection and modification of the potting material is more pertinence and directivity The research results have great guiding significance and reference value for the practical project.

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Interactions of neutrinos with matter

Cited by 7 publications

References 78 publications

Significance of Neutrino Environments on Neutrino-Induced Fission and Neutron-Induced Fission Processes

Significance of Neutrino Environments on Neutrino-Induced Fission and Neutron-Induced Fission Processes

On the Free Neutron Decay with Neutrino(s) Interactions

Analysis of Glass Shell's Thermal Stress Based on Orthogonal Experiment

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