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The energy spectra of unscattered neutrons produced by deuterium-deuterium and deuterium-tritium fusion reactions are an important diagnostic in High Energy Density Physics experiments as the spectra are sensitive to the velocities of…

Plasma Physics · Physics 2023-05-05 B. D. Appelbe , W. T. Taitano , A. J. Crilly , O. M. Mannion , C. J. Forrest , J. P. Chittenden

We present an optimization of the hadron focusing system for a low-energy high-intensity conventional neutrino beam (Super-Beam) proposed on the basis of the HP-SPL at CERN with a beam power of 4 MW and an energy of 4.5 GeV. The far…

Accelerator Physics · Physics 2015-05-28 A. Longhin

We present a fast neutron spectroscopy system based on a nitrogen-filled, large volume gaseous detector, the Spherical Proportional Counter. The system has been successfully operated up to gas pressure of 1.5 bar. Neutron energy is…

High Energy Physics - Experiment · Physics 2022-11-09 I. Giomataris , I. Katsioulas , P. Knights , I. Manthos , J. Matthews , T. Neep , K. Nikolopoulos , T. Papaevangelou , B. Phoenix , R. Ward

Cosmology is poised to measure the neutrino mass sum $M_\nu$ and has identified several smaller-scale observables sensitive to neutrinos, necessitating accurate predictions of neutrino clustering over a wide range of length scales. The…

Cosmology and Nongalactic Astrophysics · Physics 2023-11-21 Amol Upadhye , Juliana Kwan , Ian G. McCarthy , Jaime Salcido , Kelly R. Moran , Earl Lawrence , Yvonne Y. Y. Wong

Activation of the soil surrounding the ESS accelerator tunnel calculated by the MARS15 code is presented. A detailed composition of the soil, that comprises about 30 different chemical elements, is considered. Spatial distributions of the…

Accelerator Physics · Physics 2018-07-04 I. L. Rakhno , N. V. Mokhov , I. S. Tropin , D. Ene

Data from the Lunar Exploration Neutron Detector (LEND) Collimated Sensors for Epithermal Neutrons (CSETN) are used in conjunction with a model based on results from the Lunar Prospector mission to quantify the extent of the background in…

Earth and Planetary Astrophysics · Physics 2012-02-10 V. R. Eke , L. F. A. Teodoro , D. J. Lawrence , R. C. Elphic , W. C. Feldman

Up-to-now known characteristics of radio pulsars, such as mass limits, magnetic field intensity, rotational period, and maximum radiation are mainly of empirical nature. Applying the Expansive Nondecelerative Universe model (ENU) into the…

Astrophysics · Physics 2007-05-23 Miroslav Sukenik , Jozef Sima

The high performance requirements at the European Spallation Source have been driving the technological advances on the neutron detector front. Now more than ever is it important to optimize the design of detectors and instruments, to fully…

Radial profiles of density fluctuations and radial electric field, $E_r$, have been measured using Doppler reflectometry during the post-pellet enhanced confinement phase achieved, under different heating power levels and magnetic…

Recent studies have highlighted the sensitivity of core-collapse supernovae (CCSNe) models to electron-capture (EC) rates on neutron-rich nuclei near the N=50 closed-shell region. In this work, we perform a large suite of one-dimensional…

High Energy Astrophysical Phenomena · Physics 2022-11-15 Zac Johnston , Sheldon Wasik , Rachel Titus , MacKenzie L. Warren , Evan P. O'Connor , Remco Zegers , Sean M. Couch

The recently developed Directional RElativistic Spectrum Simulator (DRESS) code has been validated for the first time against numerical calculations and experimental measurements performed on MAST. In this validation, the neutron…

The NUCLEON satellite experiment is designed to directly investigate the energy spectra of cosmic-ray nuclei and the chemical composition (Z=1-30) in the energy range of 2-500 TeV. The experimental results are presented, including the…

In this study, we explore the potential of machine learning for modeling molecular electronic spectral intensities as a continuous function in a given wavelength range. Since presently available chemical space datasets provide excitation…

Chemical Physics · Physics 2022-08-02 Prakriti Kayastha , Sabyasachi Chakraborty , Raghunathan Ramakrishnan

We study low energy hadronic interaction models based on BESS observed cosmic ray proton and antiproton spectra at medium high altitude. Among the three popular low energy interaction models, we find that FLUKA reproduces results of BESS…

High Energy Astrophysical Phenomena · Physics 2009-07-09 Arunava Bhadra , Sanjay K. Ghosh , Partha S. Joarder , Arindam Mukherjee , Sibaji Raha

We have developed a method to compute the possible distribution of radio emission regions in a typical pulsar magnetosphere, taking into account the viewing geometry and rotational effects of the neutron star. Our method can estimate the…

Astrophysics of Galaxies · Physics 2015-05-18 R. M. C. Thomas , Y. Gupta , R. T. Gangadhara

An extensive 3-dimensional Monte Carlo calculation of the atmospheric neutrino flux is in progress with the FLUKA Monte Carlo code. The results are compared to those obtained under the 1-dimensional approximation, where secondary particles…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. Battistoni , A. Ferrari , P. Lipari , T. Montaruli , P. R. Sala , T. Rancati

A compact neutron spectrometer based on the liquid scintillator is presented for neutron energy spectrum measurements at the HL-2A tokamak. The spectrometer was well characterized and a fast digital pulse shape discrimination software was…

Instrumentation and Detectors · Physics 2013-06-18 Yuan Xi , Zhang Xing , Xie Xufei , Chen Zhongjing , Peng Xingyu , Fan Tieshuan , Chen Jinxiang , Li Xiangqing , Yuan Guoliang , Yang Jinwei , Yang Qingwei

We simulate the acceleration processes of collisionless particles in a shock structure with magnetohydrodynamical (MHD) fluctuations. The electromagnetic field is represented as a sum of MHD shock solution ($\Mag_0, \Ele_0$) and torsional…

Astrophysics · Physics 2009-11-13 Takayuki Muranushi , Shu-ichiro Inutsuka

A vectorial analysis of magnetic resonance spectrometers, based on traveling wave resonators and including the reference arm and the automatic control of frequency, has been developed. The proposed model, valid also for stationary wave…

Instrumentation and Detectors · Physics 2015-06-26 G. Annino , M. Cassettari , M. Fittipaldi , M. Martinelli

We theoretically investigate nonresonant spontaneous bremsstrahlung in the scattering of an electron by a nucleus in the field of two linearly polarized light waves propagating in the same direction in the general relativistic case. It is…

Quantum Physics · Physics 2007-05-23 Sergey P. Roshchupkin , Oleg B. Lysenko
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