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An ambitious goal of the astrophysical community is not only to constrain the equation of state (EOS) of neutron star (NS) matter by confronting it with astrophysics observations, but ultimately also to infer the NS composition.…

Nuclear Theory · Physics 2022-11-09 Tuhin Malik , B. K. Agrawal , Constança Providência

We propose the existence of a lower bound on the energy of pure neutron matter (PNM) on the basis of unitary-gas considerations. We discuss its justification from experimental studies of cold atoms as well as from theoretical studies of…

Nuclear Theory · Physics 2017-10-27 Ingo Tews , James M. Lattimer , Akira Ohnishi , Evgeni E. Kolomeitsev

In this paper we report on a high current density ion beam profile diagnostics with a slit-based system as a reliable method, capable of high thermal load applications. The task arose in frames of a point-like neutron source development for…

The Pohang Accelerator Laboratory operates an electron linac for the pulsed neutron source as one of the long-term nuclear R&D programs at the Korea Atomic Energy Research Institute. The designed beam parameters are as follows; The nominal…

Accelerator Physics · Physics 2008-11-26 G. N. Kim , H. S. Kang , Y. S. Lee , M. H. Cho , I. S. Ko , W. Namkung

Some evidence for sterile neutrinos has been found in short baseline observations where the measured neutrino flux did not agree with expectations. Systematic uncertainties from the expected values has limited the sensitivity of this…

High Energy Physics - Experiment · Physics 2015-08-26 John LoSecco

We propose a new scheme of producing intense neutron beam whose yields exceed those of existing facilities by many orders of magnitude. This scheme uses the recently proposed photon beam extracted from circulating quantum ions, which is…

Nuclear Experiment · Physics 2017-12-06 T. Masuda , A. Yoshimi , M. Yoshimura

This article presents the first search for neutrino-induced neutral current coherent single-photon production (NC coherent 1$\gamma$). The search makes use of data from the MicroBooNE 85-tonne active volume liquid argon time projection…

High Energy Physics - Experiment · Physics 2025-02-12 MicroBooNE Collaboration , P. Abratenko , D. Andrade Aldana , L. Arellano , J. Asaadi , A. Ashkenazi , S. Balasubramanian , B. Baller , A. Barnard , G. Barr , D. Barrow , J. Barrow , V. Basque , J. Bateman , O. Benevides Rodrigues , S. Berkman , A. Bhat , M. Bhattacharya , M. Bishai , A. Blake , B. Bogart , T. Bolton , M. B. Brunetti , L. Camilleri , D. Caratelli , F. Cavanna , G. Cerati , A. Chappell , Y. Chen , J. M. Conrad , M. Convery , L. Cooper-Troendle , J. I. Crespo-Anadon , R. Cross , M. Del Tutto , S. R. Dennis , P. Detje , R. Diurba , Z. Djurcic , K. Duffy , S. Dytman , B. Eberly , P. Englezos , A. Ereditato , J. J. Evans , C. Fang , B. T. Fleming , W. Foreman , D. Franco , A. P. Furmanski , F. Gao , D. Garcia-Gamez , S. Gardiner , G. Ge , S. Gollapinni , E. Gramellini , P. Green , H. Greenlee , L. Gu , W. Gu , R. Guenette , P. Guzowski , L. Hagaman , M. D. Handley , O. Hen , C. Hilgenberg , G. A. Horton-Smith , A. Hussain , B. Irwin , M. S. Ismail , C. James , X. Ji , J. H. Jo , R. A. Johnson , Y. J. Jwa , D. Kalra , G. Karagiorgi , W. Ketchum , M. Kirby , T. Kobilarcik , N. Lane , J. -Y. Li , Y. Li , K. Lin , B. R. Littlejohn , L. Liu , W. C. Louis , X. Luo , T. Mahmud , C. Mariani , D. Marsden , J. Marshall , N. Martinez , D. A. Martinez Caicedo , S. Martynenko , A. Mastbaum , I. Mawby , N. McConkey , L. Mellet , J. Mendez , J. Micallef , K. Mistry , T. Mohayai , A. Mogan , M. Mooney , A. F. Moor , C. D. Moore , L. Mora Lepin , M. M. Moudgalya , S. Mulleria Babu , D. Naples , A. Navrer-Agasson , N. Nayak , M. Nebot-Guinot , C. Nguyen , J. Nowak , N. Oza , O. Palamara , N. Pallat , V. Paolone , A. Papadopoulou , V. Papavassiliou , H. Parkinson , S. F. Pate , N. Patel , Z. Pavlovic , E. Piasetzky , K. Pletcher , I. Pophale , X. Qian , J. L. Raaf , V. Radeka , A. Rafique , M. Reggiani-Guzzo , J. Rodriguez Rondon , M. Rosenberg , M. Ross-Lonergan , I. Safa , D. W. Schmitz , A. Schukraft , W. Seligman , M. H. Shaevitz , R. Sharankova , J. Shi , E. L. Snider , M. Soderberg , S. Soldner-Rembold , J. Spitz , M. Stancari , J. St. John , T. Strauss , A. M. Szelc , N. Taniuchi , K. Terao , C. Thorpe , D. Torbunov , D. Totani , M. Toups , A. Trettin , Y. -T. Tsai , J. Tyler , M. A. Uchida , T. Usher , B. Viren , J. Wang , M. Weber , H. Wei , A. J. White , S. Wolbers , T. Wongjirad , M. Wospakrik , K. Wresilo , W. Wu , E. Yandel , T. Yang , L. E. Yates , H. W. Yu , G. P. Zeller , J. Zennamo , C. Zhang

The work is devoted to development of hard electron antineutrino source with variable and regulated (controlled) spectrum. The high flux antineutrino source with hard antineutrino spectrum based on neutron activation of 7Li and subsequent…

Instrumentation and Detectors · Physics 2017-05-16 V. I. Lyashuk

Motivated by Pierre Auger Observatory results favoring a heavy nuclear composition for ultrahigh-energy (UHE) cosmic rays, we investigate implications for the cumulative neutrino background. The requirement that nuclei not be…

High Energy Astrophysical Phenomena · Physics 2016-03-14 Kohta Murase , John F. Beacom

Following significant instrument upgrades and parallel methodological developments over the past decade, the TOSCA neutron spectrometer at the ISIS Pulsed Neutron & Muon Source in the United Kingdom has developed a rich and growing…

Materials Science · Physics 2022-07-20 Jeff Armstrong , Xiao Wang , Felix Fernandez-Alonso

We study collisions between neutral, deuterated ammonia molecules (ND$_3$) stored in a 50 cm diameter synchrotron and argon atoms in co-propagating supersonic beams. The advantages of using a synchrotron in collision studies are twofold:…

Bright, coherent soft X-ray (SXR) radiation is essential to a variety of applications in fundamental research and life sciences. So far, high photon flux in this spectral region can only be delivered by synchrotrons, free electron lasers or…

We report the first experiment investigating ion acceleration and neutron generation irradiating thin plastic targets (CH2) and deuterated plastic targets (CD2) of thickness ranging from 30nm to 160nm using the 4PW (0.1 Hz) laser at CoReLS…

Betatron X-ray radiation in laser-plasma accelerators is produced when electrons are accelerated and wiggled in the laser-wakefield cavity. This femtosecond source, producing intense X-ray beams in the multi kiloelectronvolt range has been…

Neutron Resonance Transmission Analysis (NRTA) uses resonant absorption of neutrons to infer the absolute isotopic composition of a target object, enabling applications in a broad range of fields such as archaeology, materials analysis of…

Instrumentation and Detectors · Physics 2020-01-29 Ezra M. Engel , Ethan A. Klein , Areg Danagoulian

Ultra-cold neutrons (UCN), neutrons with energies low enough to be confined by the Fermi potential in material bottles, are playing an increasing role in measurements of fundamental properties of the neutron. The ability to manipulate UCN…

Synchrotron facilities like the Cornell High Energy Synchrotron Source (CHESS) generate massive data volumes from complex beamline experiments, but face challenges such as limited access time, the need for on-site experiment monitoring, and…

Hypernebulae are inflated by accretion-powered winds accompanying hyper-Eddington mass transfer from an evolved post-main sequence star onto a black hole or neutron star companion. The ions accelerated at the termination shock -- where the…

High Energy Astrophysical Phenomena · Physics 2024-01-02 Navin Sridhar , Brian D. Metzger , Ke Fang

A bright collimated neutron source is an essential tool for global security missions and fundamental scientific research. In this paper, we study a compact high-yield and high-angular-flux neutron source utilizing the break-up reaction of…