A5006328721- Nuclear Physics and Applications
- Nuclear reactor physics and engineering
- Dark Matter and Cosmic Phenomena
- Nuclear physics research studies
- Astrophysics and Cosmic Phenomena
- Nuclear Materials and Properties
- Particle physics theoretical and experimental studies
- Neutrino Physics Research
- Particle Detector Development and Performance
- Solar and Space Plasma Dynamics
- High-Energy Particle Collisions Research
- Radiation Detection and Scintillator Technologies
- Radiation Therapy and Dosimetry
- Radiopharmaceutical Chemistry and Applications
- Quantum Chromodynamics and Particle Interactions
- Particle accelerators and beam dynamics
- X-ray Spectroscopy and Fluorescence Analysis
- Atomic and Subatomic Physics Research
- Atmospheric Ozone and Climate
- Physics of Superconductivity and Magnetism
- Superconducting Materials and Applications
- Atomic and Molecular Physics
- Algorithms and Data Compression
- Fractal and DNA sequence analysis
- Particle Accelerators and Free-Electron Lasers
Kyungpook National University
2014-2024
The University of Texas at Arlington
2021-2024
RWTH Aachen University
2017
Institute for Basic Science
2016
Korea University
2003-2005
The Alpha Magnetic Spectrometer (AMS) is a precision particle physics detector on the International Space Station (ISS) conducting unique, long-duration mission of fundamental research in space. objectives include precise studies origin dark matter, antimatter, and cosmic rays as well exploration new phenomena. Following 16-year period construction testing, precursor flight Shuttle, AMS was installed ISS May 19, 2011. In this report we present results based 120 billion charged ray events up...
Axion-like particles (ALPs) provide a promising direction in the search for new physics, while wide range of models incorporate ALPs. We point out that future neutrino experiments, such as DUNE, possess competitive sensitivity to ALP signals. The high-intensity proton beam impinging on target can not only produce copious amounts neutrinos, but also cascade photons are created from charged particle showers stopping target. Therefore, ALPs interacting with be produced (often energetically)...
Precise knowledge of the charge and rigidity dependence secondary cosmic ray fluxes secondary-to-primary flux ratios is essential in understanding propagation. We report properties heavy fluorine F R range 2.15 GV to 2.9 TV based on 0.29 million events collected by Alpha Magnetic Spectrometer experiment International Space Station. The spectrum deviates from a single power law above 200 GV. heavier F/Si ratio distinctly different lighter B/O (or B/C) dependence. In particular, 10 GV, F/SiB/O...
New gauge bosons coupled to heavy neutral leptons (HNLs) are simple and well-motivated extensions of the Standard Model. In searches for HNLs in proton fixed-target experiments, we find that a large population (<a:math xmlns:a="http://www.w3.org/1998/Math/MathML" display="inline"><a:msup><a:mi>Z</a:mi><a:mo>′</a:mo></a:msup></a:math>) produced by bremsstrahlung may decay HNLs, leading significant improvement existing bounds on (<c:math xmlns:c="http://www.w3.org/1998/Math/MathML"...
In this work we demonstrate that a future accelerator-based neutrino experiment such as DUNE can greatly increase its sensitivity to variety of new physics scenarios by operating in mode where the proton beam impinges on dump. We consider two scenarios, namely light dark matter and axionlike particles show utilizing dump at DUNE-like experiment, unexplored regions parameter space be probed with an exposure only 3 months half expected initial power. Specifically, targetless configuration high...
We report the properties of primary cosmic-ray sulfur (S) in rigidity range 2.15 GV to 3.0 TV based on 0.38×10^{6} nuclei collected by Alpha Magnetic Spectrometer experiment (AMS). observed that above 90 dependence S flux is identical Ne-Mg-Si fluxes, which different from He-C-O-Fe fluxes. found that, similar N, Na, and Al cosmic rays, over entire range, traditional rays S, Ne, Mg, C all have sizeable secondary components, Mg fluxes are well described weighted sum silicon fluorine flux,...
The cumulative and independent yields of various fission products within the mass ranges 83 to 117 123 161 have been measured in epi-cadmium neutron-induced 245Cm by using an off-line gamma-ray spectrometric technique. Charge distribution correction was applied on obtain post-neutron yield distribution. From data, full-width at tenth-maximum light heavy wings, average <AL> <AH>, neutron number <ν>, peak-to-valley ratio were obtained for first time. Comparison distributions made between...
Beam dumps and fixed-target experiments have been very sensitive probes of such particles other physics beyond the Standard Model by considering production new states from primary interaction in beam dump. In a proton dump, there are many secondary interactions taking place electromagnetic showers which may be additional channels for pseudoscalar bosons or axionlike (ALPs). The targetless configuration MiniBooNE experiment, collected data $1.86\ifmmode\times\else\texttimes\fi{}{10}^{20}$...
The cumulative and independent yields of various fission products within the mass range 83 to 117 123 157 have been measured in epi-cadmium neutron–induced 241Pu using an off-line γ-ray spectrometric technique. From yields, post-neutron were obtained charge distribution correction. full-width at tenth maximum light heavy wings average <AL> <AH>, as well number neutrons <ν>, obtained. epi-cadmium– thermal compared examine role excitation energy on nuclear structure effect.
In the epi-cadmium neutron-induced fission of 229Th, cumulative yields relatively long-lived products within mass range 77 to 151 were measured by using an off-line gamma-ray spectrometric technique. The obtained from product charge distribution correction. peak-to-valley (P/V) ratio, full-width at tenth-maximum light and heavy wings, average <AL> <AH>, neutron number <ν> obtained. P/V ratio was for first time found be about three times lower in than thermal which shows role excitation...
We review the electro-magnetic energy at axion haloscopes and find that electric corresponding magnetic stored in cavity modes or, equivalently, mode dependent form factors are same regardless of position inside solenoid. Furthermore, we extend our argument to cases satisfying $\stackrel{\ensuremath{\rightarrow}}{\ensuremath{\nabla}}\ifmmode\times\else\texttimes\fi{}{\stackrel{\ensuremath{\rightarrow}}{B}}_{\text{external}}=0$, where...
Mass yield distribution has been carried out in the epi-cadmium neutron-induced fission of 241Am by measuring cumulative yields products within mass ranges 80 to 119 and 123 161. An off-line gamma-ray spectrometric technique was used for measurement. From products, chain were obtained applying charge correction. distribution, full-width at tenth-maximum light heavy wings, peak-to-valley (P/V) ratio, average <AL> <AH>, number neutrons <ν> obtained. The data neutron compared with similar...
In the epi-cadmium neutron-induced fission of 239Pu, cumulative and independent yields various products within mass ranges 83 to 117 123 156 have been measured by using an off-line gamma-ray spectrometric technique. The spectrum average neutron energy is 1.9 MeV. Charge distribution correction on was applied obtain their post-neutron yields. Mass yield parameters such as peak-to-valley (P/V) ratio, full-width at tenth-maximum light heavy wings, <AL> <AH>, number <ν> were obtained. in thermal...
The cumulative yields of fission products within the mass range 83 to 119 and 123 158 have been measured in epi-cadmium neutron-induced 243Am by using an off-line gamma-ray spectrometric technique. Mass chain were obtained from applying charge distribution correction. From yield data, full-width at tenth-maximum light heavy wing, peak-to-valley (P/V) ratio, average <AL> <AH>, number neutrons <ν> obtained. data 243Am(n,f) reaction compared with similar 243Am(nth,f) 243Am(n16.5 MeV,f)...
Abstract Independent isomeric yield ratios (IR) of 130,132 Sb, 131,133 Te, 134,136 I, 135 Xe and 138 Cs have been measured in the epi-cadmium neutron induced fission 241 Pu by using an off-line gamma-ray spectrometric technique. The average energy (< E n >) reactor spectrum is 1.9 MeV. From IR values, root mean square fragment angular momenta ( J RMS ) were deduced spin dependent statistical model analysis. Effect nuclear structure on values was examined. present data compared with...
New gauge bosons coupling to leptons are simple and well-motivated extensions of the Standard Model. We study sensitivity gauged $L_{\mu} -L_{e}$, $L_e-L_\tau$ -L_{\tau}$ both with existing beam dump mode data MiniBooNE DUNE near detector. find that including bremsstrahlung resonant production $Z'$ which decays $e^{\pm}$ $\mu^{\pm}$ final states leads a significant improvement in bounds, especially for $L_\mu-L_e$ while competitive constraints can be achieved from MiniBooNE's run.