A5076612163- Particle physics theoretical and experimental studies
- Dark Matter and Cosmic Phenomena
- Radiation Detection and Scintillator Technologies
- Neutrino Physics Research
- Atomic and Subatomic Physics Research
- Particle Detector Development and Performance
- Astrophysics and Cosmic Phenomena
- Medical Imaging Techniques and Applications
- Nuclear Physics and Applications
- CCD and CMOS Imaging Sensors
- Cosmology and Gravitation Theories
- Radioactive Decay and Measurement Techniques
- Radiation Therapy and Dosimetry
- Mental Health and Patient Involvement
- Technology Use by Older Adults
- Persona Design and Applications
- Terahertz technology and applications
- Ethics and Social Impacts of AI
- Artificial Intelligence in Law
- Luminescence Properties of Advanced Materials
- Nuclear reactor physics and engineering
- Muon and positron interactions and applications
- Nuclear and radioactivity studies
- Mental Health and Psychiatry
- Empathy and Medical Education
Korea Advanced Institute of Science and Technology
2025
Harvard University
2024
Institute for Basic Science
2014-2024
Harvard University Press
2024
Amorepacific (South Korea)
2024
Adobe Systems (United States)
2023
University of California, Berkeley
2020-2022
Kyungpook National University
2007-2019
Korea University
2019
SLAC National Accelerator Laboratory
2019
We present the first limits on inelastic electron-scattering dark matter and photon absorption using a prototype SuperCDMS detector having charge resolution of 0.1 electron-hole pairs (CDMS HVeV, 0.93 g CDMS high-voltage device). These electron-recoil significantly improve experimental constraints particles with masses as low 1 MeV/c^{2}. demonstrate sensitivity to photons competitive other leading approaches but substantially less exposure (0.49 d). results scientific potential...
The Korea Invisible Mass Search (KIMS) experiment presents new limits on the weakly interacting massive particle (WIMP)-nucleon cross section using data from an exposure of 3409 kg·d taken with low-background CsI(Tl) crystals at Yangyang Underground Laboratory. most stringent limit spin-dependent interaction for a pure proton case is obtained. DAMA signal region both spin-independent and interactions WIMP masses greater than 20 GeV/c2 excluded by single crystal scintillators.Received 3 April...
Search for neutrino-less double beta decay of <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">100</sup> Mo is proposed using active method with Ca MoO <sub xmlns:xlink="http://www.w3.org/1999/xlink">4</sub> scintillation crystals which show the brightest light among variety inorganic materials containing Mo. Study X-ray luminescence and properties such as energy response, number photoelectrons/keV, absolute yield, time, pulse shape...
We present a search for low-mass ($\leq 20 GeV/c^{2}$) weakly interacting massive particles(WIMPs), strong candidates of dark matter particles,using the low-background CsI(Tl) detector array Korea Invisible Mass Search (KIMS) experiment. With total data exposure 24,324.3kg$\cdot$days,we WIMP interaction signals produced by nuclei recoiling from WIMP-nuclear elastic scattering with visible energies between 2 and 4keV. The observed energy distribution candidate events is consistent null...
The simultaneous measurement of heat and light signals from a <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">${}^{40}{\rm Ca} {}^{100} {\rm MoO}_4$</tex></formula> scintillating crystal was performed at temperatures tens milli-kelvin using bolometric detector. instrumented with pair low-temperature detectors, consisting metallic magnetic calorimeter for reading the phonon detector based on Ge...
A calcium molybdate ( <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex-math notation="LaTeX">$\text{CaMoO}_{4}$</tex-math></inline-formula> ) crystal scintillator, with molybdenum enriched in notation="LaTeX">$^{100}\text{Mo}$</tex-math></inline-formula> and depleted notation="LaTeX">$^{48}\text{Ca}$</tex-math></inline-formula> notation="LaTeX">$^{40}\text{Ca}{}^{100}\text{MoO}_{4}$</tex-math></inline-formula> ), was developed by...
Scintillation properties and radioactive contamination of calcium molybdate scintillating crystals depleted in <formula formulatype="inline" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"><tex Notation="TeX">$^{48}$</tex> </formula> Ca enriched Notation="TeX">$^{100}$</tex> Mo ( Notation="TeX">$^{40}$</tex> MoO Notation="TeX">$_{4}$</tex> ) have been studied to prepare a xmlns:xlink="http://www.w3.org/1999/xlink"> <tex...
The response of CsI(Tl) crystals to nuclear recoils and gammas down 3 keV has been studied, it demonstrated that the pulse shape discrimination capability for is better than NaI(Tl). Extensive study internal background CsI powder was performed a lot efforts have made reduce sources such as <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">137</sup> Cs xmlns:xlink="http://www.w3.org/1999/xlink">87</sup> Rb. concentration 2 mBq/kg achieved...
We constructed a neutron calibration facility based on 300-mCi Am-Be source in conjunction with search for weakly interacting massive particle candidates dark matter. The is used to study the response of CsI(Tl) crystals nuclear recoils induced by neutrons from and comparing them electron produced Compton scattering 662-keV $\gamma$-rays $^{137}$Cs source. measured results pulse shape discrimination (PSD) between nuclear- electron-recoil events are quantified terms quality factors. A...
The resent observations of neutrino oscillations are conclusive evidence that the has a non-zero mass, and provides motivation for neutrinoless double beta decay (0ν DBD) searches. Searches 0ν DBD challenging experimental approaches aimed at establishing neutrino's nature (Dirac or Majorana) absolute mass scale [1–3].
In order to understand the scintillation characteristics of nuclear recoil events in CsI(Tl) crystals and for application analysis Dark Matter (DM) searches, we study quenching channeling effects with simulations ion motion experiments using neutrons impinging on crystal. The electronic energy loss versus penetration depth ions a target are simulated by SRIM MARLOWE programs modified measured efficiency function. They used produce factors as function energy. code monocrystalline yields light...
The Center for Underground Physics (CUP) at the Institute Basic Science (IBS) has been conducting two major experiments, COSINE experiment dark matter search and AMoRE neutrinoless double beta decay search. is using NaI:Tl scintillation crystals studying 100Mo based such as CaMoO_{4}(CMO), Li_{2}MoO_{4}(LMO), etc. In order to develop ultra-pure we have built a clean-environment facility minimize external contamination during crystal growth. Here, report growth internal background levels of...