Showing 361 - 380 results of 394 for search '"neutron"', query time: 0.04s Refine Results
  1. 361

    Observations of Microlensed Images with Dual-field Interferometry: On-sky Demonstration and Prospects by Przemek Mróz, Subo Dong, Antoine Mérand, Jinyi Shangguan, Julien Woillez, Andrew Gould, Andrzej Udalski, Frank Eisenhauer, Yoon-Hyun Ryu, Zexuan Wu, Zhuokai Liu, Hongjing Yang, , Guillaume Bourdarot, Denis Defrère, Antonia Drescher, Maximilian Fabricius, Paulo Garcia, Reinhard Genzel, Stefan Gillessen, Sebastian F. Hönig, Laura Kreidberg, Jean-Baptiste Le Bouquin, Dieter Lutz, Florentin Millour, Thomas Ott, Thibaut Paumard, Jonas Sauter, T. Taro Shimizu, Christian Straubmeier, Matthias Subroweit, Felix Widmann, (The GRAVITY+ Collaboration), Michał K. Szymański, Igor Soszyński, Paweł Pietrukowicz, Szymon Kozłowski, Radosław Poleski, Jan Skowron, Krzysztof Ulaczyk, Mariusz Gromadzki, Krzysztof Rybicki, Patryk Iwanek, Marcin Wrona, Mateusz J. Mróz, (The OGLE Collaboration), Michael D. Albrow, Sun-Ju Chung, Cheongho Han, Kyu-Ha Hwang, Youn Kil Jung, In-Gu Shin, Yossi Shvartzvald, Jennifer C. Yee, Weicheng Zang, Sang-Mok Cha, Dong-Jin Kim, Seung-Lee Kim, Chung-Uk Lee, Dong-Joo Lee, Yongseok Lee, Byeong-Gon Park, Richard W. Pogge, (KMTNet Collaboration)

    Published 2025-01-01
    “…Interferometric observations of gravitational microlensing events offer an opportunity for precise, efficient, and direct mass and distance measurements of lensing objects, especially those of isolated neutron stars and black holes. However, such observations have previously been possible for only a handful of extremely bright events. …”
    Get full text
    Article
  2. 362

    Two-Group Theory of the Feynman-Alpha Method for Reactivity Measurement in ADS by Lénárd Pál, Imre Pázsit

    Published 2012-01-01
    “…The theory of the Feynman-alpha method, which is used to determine the subcritical reactivity of systems driven by an external source such as an ADS, is extended to two energy groups with the inclusion of delayed neutrons. This paper presents a full derivation of the variance to mean formula with the inclusion of two energy groups and delayed neutrons. …”
    Get full text
    Article
  3. 363

    Analysis of the EBR-II SHRT-45R Unprotected Loss of Flow Experiment with ERANOS and RELAP by W. F. G. van Rooijen, H. Mochizuki

    Published 2015-01-01
    “…The SHRT-45R benchmark contains a neutronic and a thermal-hydraulic part and results are presented for both. …”
    Get full text
    Article
  4. 364

    TRACE assessment of density wave instability onset with void reactivity feedback under natural circulation by Paul Hurley, Yang Liu, Tomasz Kozlowski, Juliana P. Duarte

    Published 2025-02-01
    “…Experiments performed at the Karlstein Thermal Hydraulic Test Facility (KATHY) have reproduced the reactivity feedback mechanism in BWRs under ATWS conditions. Using a neutronics module simulator, the KATHY facility was able to provide data on the effect of different neutronic parameters on DWO onset. …”
    Get full text
    Article
  5. 365

    Searching for incinerating the accumulated plutonium around the world by mixing it with thorium and using this mixture as a nuclear fuel in the CANDU-6 by A. Abdelghafar Galahom, Nassar Alnassar, Amr Ibrahim

    Published 2025-01-01
    “…From the neutronic and safety point of view, thorium fuel mixed with reactor grade plutonium has proven to be the most promising candidate among the investigated fuels.…”
    Get full text
    Article
  6. 366

    Axion-like relics: new constraints from old comagnetometer data by Itay M. Bloch, Yonit Hochberg, Eric Kuflik, Tomer Volansky

    Published 2020-01-01
    “…Here we derive new constraints on relic axion-like particles interaction with neutrons and electrons from old comagnetometer data. …”
    Get full text
    Article
  7. 367

    Analysis of the model reactor dynamics by Kostas Bučys, Donatas Švitra

    Published 1999-12-01
    “… There is constructed a model of nuclear reactor dynamics with delay in feedback line "power­reactivity" including six groups of delayed neutrons. Using D-partitioning method there is analysed the characteristic quasi-polynomial disposition of roots on complex plane. …”
    Get full text
    Article
  8. 368

    Electro-gravity entanglement by Moreno Jose C.

    Published 2024-01-01
    “…We present a thought experiment where neutrons are displaced by electric fields above the Schwinger limit, predicting their maximum possible corresponding displacement magnitudes and diminishments in their gravitational masses (with increments elsewhere), estimating an upper bound for the gravitational mass of each of those entangled wave packets allegedly constituting those neutrons. …”
    Get full text
    Article
  9. 369

    Best-Estimate Plus Uncertainty Framework for Multiscale, Multiphysics Light Water Reactor Core Analysis by Jason Hou, Maria Avramova, Kostadin Ivanov

    Published 2020-01-01
    “…In this phase, the other physics (fuel and moderator), providing feedback to neutronics M&S in a LWR core, and time-dependent phenomena are considered. …”
    Get full text
    Article
  10. 370

    Assessing the Static and Dynamic Sensitivity of a Commercial Off-the-Shelf Multicore Processor for Noncritical Avionic Applications by Pablo F. Ramos, Vanessa C. Vargas, Nacer-Eddine Zergainoh, Raoul Velazco

    Published 2018-01-01
    “…The evaluation of the device is done using quantitative theory by means of radiation experiments with 14 MeV neutrons to emulate the effects of high-energy neutrons present at avionic altitudes. …”
    Get full text
    Article
  11. 371

    Study of Fast Transient Pressure Drop in VVER-1000 Nuclear Reactor Using Acoustic Phenomenon by Soroush Heidari Sangestani, Mohammad Rahgoshay, Naser Vosoughi, Mitra Athari Allaf

    Published 2018-01-01
    “…It is used to acquire a more accurate method in order to simulate the various accidents of reactor core. Neutronic equations should be solved concurrently by means of DRAGON 4 and DONJON 4 coupling codes. …”
    Get full text
    Article
  12. 372

    Tests of Lorentz Symmetry in Single Beta Decay by Jorge S. Díaz

    Published 2014-01-01
    “…Experimental signatures of a dimension-three operator for Lorentz violation which are unobservable in neutrino oscillations are described for the decay of polarized and unpolarized neutrons as well as for measurements of the spectral endpoint in beta decay.…”
    Get full text
    Article
  13. 373

    Searching for an optimal fuel for a supercritical water reactor (SCWR) to dispose of minor actinides resulting from the nuclear waste by Nassar Alnassar, Maha Algarawi, Sitah Alanazi, Muneerah Al-Aqeel, Ahmed Salah Khaliil, A. Abdelghafar Galahom

    Published 2025-02-01
    “…A three-dimensional model of a supercritical water reactor (SCWR) has been designed using MCNPX to make a comprehensive neutronic analysis. MAs with a concentration of 1 % have been added to UO2, (Th, U)O2, (Th, 233U)O2 and (Th, rgPu)O2. …”
    Get full text
    Article
  14. 374

    Status of the GRANIT Facility by Damien Roulier, Francis Vezzu, Stefan Baeßler, Benoît Clément, Daniel Morton, Valery V. Nesvizhevsky, Guillaume Pignol, Dominique Rebreyend

    Published 2015-01-01
    “…The GRANIT facility is a follow-up project, which is motivated by the recent discovery of gravitational quantum states of ultracold neutrons. The goal of the project is to approach the ultimate accuracy in measuring parameters of such quantum states and also to apply this phenomenon and related experimental techniques to a broad range of applications in particle physics as well as in surface and nanoscience studies. …”
    Get full text
    Article
  15. 375

    Calculation of Involved and Noninvolved Organs Doses in Carbon Therapy of Brain Tumor Using GEANT4 Simulation Toolkit by Maria Ahmadi, Seyed Mohammad Motevalli, Payvand Taherparvar, Vahid zanganeh

    Published 2024-10-01
    “…Beam parameters were also evaluated per ICRU guidelines.Results: This study estimated the flux and dose distributions of secondary particles—protons, electrons, neutrons, alpha particles, and photons—in the brain tumor and surrounding tissues. …”
    Get full text
    Article
  16. 376

    EFFECTS OF COMPONENT AND THICKNESS OF METAL LAYER ON RESPONSE FUNCTIONS OF BONNER SPHERE EXTENDED SPECTROMETER USING MCNP CALCULATION by Mai Nguyễn Trọng Nhân, Trịnh Thị Tú Anh

    Published 2017-09-01
    “…The response functions of the Bonner Sphere Extended spectrometer were calculated using the MCNP program. For incident neutrons above 10MeV, Tungsten was an excellent heavy material layer as it yielded the highest response among tested materials. …”
    Get full text
    Article
  17. 377

    Review of JAEA’s Monte Carlo codes for nuclear reactor core analysis by Nagaya Yasunobu

    Published 2025-01-01
    “…Recently improvements to MVP have been focused on the development of an advanced neutronics/thermal-hydraulics coupling code. JAEA has also developed a new Monte Carlo solver Solomon for criticality safety analysis. …”
    Get full text
    Article
  18. 378

    Gravitational Resonance Spectroscopy with an Oscillating Magnetic Field Gradient in the GRANIT Flow through Arrangement by G. Pignol, S. Baeßler, V. V. Nesvizhevsky, K. Protasov, D. Rebreyend, A. Voronin

    Published 2014-01-01
    “…Gravitational resonance spectroscopy consists in measuring the energy spectrum of bouncing ultracold neutrons above a mirror by inducing resonant transitions between different discrete quantum levels. …”
    Get full text
    Article
  19. 379

    Code Development in Coupled PARCS/RELAP5 for Supercritical Water Reactor by Po Hu, Paul Wilson

    Published 2014-01-01
    “…In PARCS, modification is focused on extending the water property tables to supercritical pressure, modifying the variable mapping input file and related code module for processing thermal-hydraulic information from separated coolant/moderator channels, and modifying neutronics feedback module to deal with the separated coolant/moderator channels. …”
    Get full text
    Article
  20. 380

    Can We Observe the Gravitational Quantum States of Positronium? by P. Crivelli, V. V. Nesvizhevsky, A. Yu. Voronin

    Published 2015-01-01
    “…The proposed scheme employs the flow-throw technique used for the first observation of this effect with neutrons. Collimation and Stark deceleration of Rydberg positronium atoms allow selecting the required velocity class. …”
    Get full text
    Article