Results 51 to 60 of about 5,344 (265)

Transmuting minor actinides with thermal reactor neutrons

Nuclear Energy and Technology, 2015
The closure of uranium-based fuel cycle assumes that Uranium and Plutonium are extracted from the spent fuel. Among remaining heavy nuclides, the most radioactive are minor actinides.
Yu. A Kazansky, M.I. Romanov
doaj   +1 more source

Luminescence and Photochromism in Lanthanide‐Doped Hackmanites

Advanced Optical Materials, EarlyView.
Lanthanide‐doped lithium hackmanite derivatives are prepared utilizing a doped LiAlSiO4 precursor to modify luminescent and photochromic properties. Upon UV excitation, europium doping results in green Eu2+ persistent luminescence from shallow traps. Contrarily, samarium doping induces unusual near‐infrared photochromism.
Joshua Baggott, Minnea Tuomisto, J. A. Gareth Williams, Sari Granroth, Ermei Mäkilä, Ari Väisänen, Jani O. Moilanen, Mika Lastusaari   +7 more
wiley   +1 more source

THERMAL AND EPITHERMAL NEUTRON GENERATION FOR NUCLEAR MEDICINE USING ELECTRON LINEAR ACCELERATOR

East European Journal of Physics, 2016
In this paper, to obtain streams of thermal and epithermal neutrons are used delayed neutrons emitted from the target with a fissile material. The target preliminarily activated with help of electron beam from linear accelerator with an energy of 20 MeV ...
V. I. Kasilov, S. P. Gokov, A. N. Dovbnya, S. A. Kalenik, K. S. Kokhnyuk, S. S. Kochetov, A. A. Khomich, O. A. Shopen   +7 more
doaj  

Direct Measurement of the Singlet Lifetime and Photoexcitation Behavior of the Boron Vacancy Center in Hexagonal Boron Nitride

Advanced Optical Materials, EarlyView.
Negatively charged boron vacancy defects in hexagonal boron nitride promise near‐surface quantum sensing, but their internal spin transition rates are only partly understood. This work directly measures the defect's singlet‐state lifetime, 15(3) ns, using a nanosecond rise‐time dual‐pulse photoluminescence‐recovery method, and shows that high laser ...
Richard A. Escalante, Andrew J. Beling, Daniel G. Ang, Niko R. Reed, Justin J. Welter, John W. Blanchard, Cecilia Campos, Edwin Coronel, Klaus Krambrock, Alexandre S. Leal, Paras N. Prasad, Ronald L. Walsworth   +11 more
wiley   +1 more source

Neutrons of thermal energies [PDF]

Proceedings of the Royal Society of London. Series A - Mathematical and Physical Sciences, 1936
Abstract If fast neutrons, such as those emitted by beryllium under alpha-particle bombardment, are allowed to pass through a considerable bulk of material rich in hydrogen, they rapidly lose energy by collisions with protons, so that the neutrons present in the medium have energies which are, on the average, very much less than those
Philip Burton Moon, J. R. Tillman
openaire   +1 more source

Displacive In‐Plane Ferroelectricity with Domain‐Specific Curie Temperature in Van der Waals Semiconductors

Advanced Science, EarlyView.
Temperature‐dependent electron diffraction on tin monochalcogenides demonstrates a gradual displacive transformation between ferroelectric and paraelectric phases with significant variability in lattice constants and Curie temperature (TC). Periodic variations exist even between domains in individual crystals, implying a domain‐specific Curie ...
Peter Sutter, Eli Sutter
wiley   +1 more source

Spatial Engineering of Gas Diffusion Layers Overcomes Mass Transport Limitations in Fuel Cells

Advanced Science, EarlyView.
ABSTRACT Mass transport limitations at high current densities hinder polymer electrolyte fuel cell (PEFC) performance due to inefficient water management and reactant distribution. Gas diffusion layer (GDL) perforation offers a potential solution as an alternative to complex flow‐field modifications.
Shangwei Zhou, Wenjia Du, Jianuo Chen, Yunsong Wu, Bochen Li, Jieyang Li, Linlin Xu, Winfried Kockelmann, Meng Lin, Marc‐Olivier Coppens, Paul R Shearing, Rhodri Jervis, Thomas S. Miller   +12 more
wiley   +1 more source

Performance Characterization of a Plastic Scintillator Sensor for Fast Neutron, Thermal Neutron, and Gamma Ray Discrimination

Sensors
A compact single-PMT composite scintillation detector was developed and characterized for discrimination of γ rays, fast neutrons, and thermal neutrons in mixed radiation fields.
Yuhang Liu, Fengpeng An, Guang Luo, Wei Wang, Xuesong Zhang, Dixiao Lu, Xiaohao Yin   +6 more
doaj   +1 more source

Carboranyl‐Curcuminoids for the Neutron Capture‐Based Treatment of Amyloid Aggregates in Alzheimer's Disease

Advanced Science, EarlyView.
The 10B‐enriched monocarbonyl analog of curcumin (BMAC) 10B‐9 enables site‐specific Boron Neutron Capture Therapy (BNCT) on amyloid‐β (Aβ) fibrils. Neutron irradiation induces histidine oxidation and fibril destabilization, as revealed by 1H‐NMR and FESEM analyses.
Sebastiano Micocci, Stefano Parisotto, Diego Alberti, Alberto Lanfranco, Valeria Bitonto, Polyssena Renzi, Martina Salmi, Andrea Magnani, Federica Dal Bello, Katiuscia Pagano, Laura Ragona, Nicoletta Protti, Annamaria Deagostino, Simonetta Geninatti Crich   +13 more
wiley   +1 more source

Trapping of Thermal Neutrons, (II)

Journal of the Atomic Energy Society of Japan / Atomic Energy Society of Japan, 1962
Concerning thermal neutron trap reactors, a comparative study of trapping media is made by an analytical approach especially to derive criteria of highly trapping media. Spherical and cylindrical shapes of media are analyzed in the two-group diffusion theory.
openaire   +3 more sources