scholarly journals Erratum: Corrigendum: Novel concept for neutron detection: proportional counter filled with 10B nanoparticle aerosol

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
F. D. Amaro ◽  
C. M. B. Monteiro ◽  
J. M. F. dos Santos ◽  
A. Antognini
Keyword(s):  
Proportional Counter ◽  
Neutron Detection ◽  
Novel Concept

scholarly journals Novel concept for neutron detection: proportional counter filled with 10B nanoparticle aerosol

2017 ◽  
Vol 7 (1) ◽  
Author(s):  
F. D. Amaro ◽  
C. M. B. Monteiro ◽  
J. M. F. dos Santos ◽  
A. Antognini
Keyword(s):  
Proportional Counter ◽  
Gamma Ray ◽  
Detection Efficiency ◽  
Radiation Detection ◽  
Neutron Detection ◽  
Nuclear Material ◽  
Sensitive Material ◽  
Proportional Counters ◽  
Thermal Neutron Beam ◽  
Novel Concept

Abstract The high neutron detection efficiency, good gamma-ray discrimination and non-toxicity of 3He made of proportional counters filled with this gas the obvious choice for neutron detection, particularly in radiation portal monitors (RPM), used to control the illicit transport of nuclear material, of which neutron detectors are key components. 3He is very rare and during the last decade this gas has become increasingly difficult to acquire. With the exception of BF3, which is toxic, no other gas can be used for neutron detection in proportional counters. We present an alternative where the 3He atoms are replaced by nanoparticles made of another neutron sensitive material, 10B. The particles are dispersed in a gaseous volume, forming an aerosol with neutron sensitive properties. A proportional counter filled with such aerosol was exposed to a thermal neutron beam and the recorded response indicates that the neutrons have interacted with the particles in the aerosol. This original technique, which transforms a standard proportional gas mixture into a neutron sensitive aerosol, is a breakthrough in the field of radiation detection and has the potential to become an alternative to the use of 3He in proportional counters.

scholarly journals Hydrogen Recoil Proportional Counter for Neutron Detection

1947 ◽  
Vol 18 (1) ◽  
pp. 44-47 ◽  
Author(s):  
J. H. Coon ◽  
R. A. Nobles
Keyword(s):  
Proportional Counter ◽  
Neutron Detection

scholarly journals Study and detection of relativistic Solar Neutrons at ground level with the Spherical Proportional Counter

2019 ◽  
Vol 26 ◽  
pp. 75
Author(s):  
D. Kyratzis ◽  
I. Savvidis
Keyword(s):  
Cross Section ◽  
Proportional Counter ◽  
Fission Fragment ◽  
Neutron Detection ◽  
Ground Level ◽  
High Energy ◽  
Energy Interval ◽  
Projected Range ◽  
Detailed Simulation ◽  
Thin Spherical Shell

A novel method of high energy solar neutron detection is proposed with the Spherical Proportional Counter (SPC), taking advantage of the 209Bi(n,f) reaction. This reaction, is considered as a standard for high energy neutron detection, due to large cross section values in the 100 MeV – 1 GeV energy interval, obtained in the n_TOF facility at CERN. A thin spherical shell of Bismuth will be situated in the large volume of the SPC, serving as target for high energy neutrons bombarding the detector, thus resulting in fission fragment emission. Detailed simulation of the 209Bi(n,f) reaction with the INCL++ model, coupled with the ABLA07 de–excitation code is performed (cross section, mass & atomic number distribution, kinetic energy per fragment) in the 100 MeV – 10 GeV energy interval, together with SRIM for the fragments’ projected range in 209Bi. Experimental data from a 252Cf source are obtained, in order to validate the SPC’s efficiency in fission fragment detection. Calculations for the expected reactions in the 209Bi shell have been performed in different atmospheric depths (700 & 1000 g/cm2), and various spherical detector radii.

Dysprosium-Containing Nanocrystals for Thermal Neutron Detection

2011 ◽  
Vol 1341 ◽  
Author(s):  
Antonio C. Rivera ◽  
Natasha N. Glazener ◽  
Nathaniel C. Cook ◽  
Nathan J. Withers ◽  
John B. Plumley ◽  
...  
Keyword(s):  
Optical Properties ◽  
Thermal Neutron ◽  
Neutron Detection ◽  
Colloidal Synthesis ◽  
Attractive Alternative ◽  
False Alarms ◽  
Thermal Neutrons ◽  
Naturally Occurring ◽  
Optical And Mechanical Properties ◽  
Novel Concept

ABSTRACTWe propose a novel concept of optical detection of thermal neutrons in a passive device that exploits transmutation of Dy-164, a dominant, naturally occurring isotope of dysprosium, into a stable isotope of either holmium Ho-165 or erbium Er-166. Combination of the high thermal neutron capture cross section of ~2,650 barns and transmutation into two other lanthanides makes Dy-164 a very attractive alternative to traditional methods of neutron detection that will be completely insensitive to gamma irradiation, thus reducing greatly the likelihood of false alarms. The optically enabled neutron detection relies on significant differences in optical properties of Dy, Ho, and Er that are not sensitive to a particular isotope, but change considerably from one element to another. While the concept applies equally well to bulk materials and to nanocrystals, nanocrystalline approach is much more attractive due to its significantly lower cost, relative ease of colloidal synthesis of high quality nanocrystals (NCs), and superior optical and mechanical properties of NCs compared to their bulk counterparts. We report on colloidal synthesis of DyF3 NCs, both doped and undoped with Ho and co-doped with Ce and Eu to enhance their optical properties. We also report on DyF3:10%Ce and DyF3:10%Eu NCs irradiated with thermal neutrons from a Cf-252 source and their optical characterization.

3He proportional counter development for thermal neutron detection

2021 ◽  
Author(s):  
Mohamed Fares ◽  
Adnane Messai ◽  
Samir Begaa ◽  
Maameri Salem ◽  
Kassida Negara ◽  
...  
Keyword(s):  
Thermal Neutron ◽  
Proportional Counter ◽  
Neutron Detection

The multicompartment SlideReactor – a novel concept for continuous monitoring of co-cultured cells

2009 ◽  
Vol 47 (01) ◽  
Author(s):  
N Billecke ◽  
S Tröller ◽  
N Raschzok ◽  
MH Morgül ◽  
NN Kammer ◽  
...  
Keyword(s):  
Continuous Monitoring ◽  
Cultured Cells ◽  
Novel Concept

Decision making based on intuitionistic fuzzy preference relations with additive approximate consistency

2020 ◽  
Vol 39 (3) ◽  
pp. 4041-4058
Author(s):  
Fang Liu ◽  
Xu Tan ◽  
Hui Yang ◽  
Hui Zhao
Keyword(s):  
Decision Making ◽  
Decision Makers ◽  
Real Interval ◽  
Preference Relations ◽  
Intuitionistic Fuzzy ◽  
Proposed Model ◽  
Fuzzy Preference Relations ◽  
Novel Concept ◽  
Fuzzy Weights ◽  
Fuzzy Preference

Intuitionistic fuzzy preference relations (IFPRs) have the natural ability to reflect the positive, the negative and the non-determinative judgements of decision makers. A decision making model is proposed by considering the inherent property of IFPRs in this study, where the main novelty comes with the introduction of the concept of additive approximate consistency. First, the consistency definitions of IFPRs are reviewed and the underlying ideas are analyzed. Second, by considering the allocation of the non-determinacy degree of decision makers’ opinions, the novel concept of approximate consistency for IFPRs is proposed. Then the additive approximate consistency of IFPRs is defined and the properties are studied. Third, the priorities of alternatives are derived from IFPRs with additive approximate consistency by considering the effects of the permutations of alternatives and the allocation of the non-determinacy degree. The rankings of alternatives based on real, interval and intuitionistic fuzzy weights are investigated, respectively. Finally, some comparisons are reported by carrying out numerical examples to show the novelty and advantage of the proposed model. It is found that the proposed model can offer various decision schemes due to the allocation of the non-determinacy degree of IFPRs.

Neuromyelitis optica spectrum: novel concept of pathogenesis, diagnosis and treatment of Devic’s disease

2009 ◽  
Vol 150 (46) ◽  
pp. 2101-2109 ◽  
Author(s):  
Péter Csécsei ◽  
Anita Trauninger ◽  
Sámuel Komoly ◽  
Zsolt Illés
Keyword(s):  
Neuromyelitis Optica ◽  
Water Channel ◽  
Diagnostic Procedures ◽  
Diagnosis And Treatment ◽  
Clinical Settings ◽  
Permanent Disability ◽  
Therapeutic Decisions ◽  
Novel Concept ◽  
The Brain

The identification of autoantibodies generated against the brain isoform water channel aquaporin4 in the sera of patients, changed the current diagnostic guidelines and concept of neuromyelitis optica (NMO). In a number of cases, clinical manifestation is spatially limited to myelitis or relapsing optic neuritis creating a diverse. NMO spectrum. Since prevention of relapses provides the only possibility to reduce permanent disability, early diagnosis and treatment is mandatory. In the present study, we discuss the potential role of neuroimaging and laboratory tests in differentiating the NMO spectrum from other diseases, as well as the diagnostic procedures and therapeutic options. We also present clinical cases, to provide examples of different clinical settings, diagnostic procedures and therapeutic decisions.

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