A. Klimenko
A5001527588- Radiation Detection and Scintillator Technologies
- Particle physics theoretical and experimental studies
- Nuclear Physics and Applications
- Particle Detector Development and Performance
- Neutrino Physics Research
- Dark Matter and Cosmic Phenomena
- Nuclear physics research studies
- Atomic and Subatomic Physics Research
- Meteorological Phenomena and Simulations
- Quantum Chromodynamics and Particle Interactions
- Quantum, superfluid, helium dynamics
- Astrophysics and Cosmic Phenomena
- Gamma-ray bursts and supernovae
- Cold Atom Physics and Bose-Einstein Condensates
- Medical Imaging Techniques and Applications
- Ionosphere and magnetosphere dynamics
- Radioactive Decay and Measurement Techniques
- Radioactive contamination and transfer
- Astro and Planetary Science
- High-Energy Particle Collisions Research
- Nuclear reactor physics and engineering
- Robotics and Sensor-Based Localization
- Wind and Air Flow Studies
- Particle Accelerators and Free-Electron Lasers
- Robotic Path Planning Algorithms
Max Planck Institute for Nuclear Physics
2017-2024
Joint Institute for Nuclear Research
2017-2024
Dubna State University
2017-2024
Los Alamos National Laboratory
2007-2023
The University of Queensland
2013
Hampton University
2012
Passport Systems (United States)
2007-2010
Pacific Northwest National Laboratory
2007
Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali del Gran Sasso
2006
Old Dominion University
2004
Highly penetrating cosmic ray muons constantly shower the earth at a rate of about 1 muon per cm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> minute. We have developed technique which exploits multiple Coulomb scattering these particles to perform nondestructive inspection without use artificial radiation. In prior work , we described heuristic methods for processing data create reconstructed images. this paper, present maximum...
The All-sky Medium Energy Gamma-ray Observatory (AMEGO) is a probe class mission concept that will provide essential contributions to multimessenger astrophysics in the late 2020s and beyond. AMEGO combines high sensitivity 200 keV 10 GeV energy range with wide field of view, good spectral resolution, polarization sensitivity. Therefore, key study astrophysical objects have unique signatures gamma-ray regime, such as neutron star mergers, supernovae, flaring active galactic nuclei....
Over 120 million vehicles enter the United States each year. Many are capable of transporting hidden nuclear weapons or material. Currently deployed X-ray radiography systems limited because they cannot be used on occupied and energy dose too low to penetrate many cargos. We present a new technique that overcomes these limitations by obtaining tomographic images using multiple scattering cosmic radiation as it transits vehicle. When coupled with passive detection, muon interrogation could...
Cs <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> LiYCl xmlns:xlink="http://www.w3.org/1999/xlink">6</sub> :Ce <sup xmlns:xlink="http://www.w3.org/1999/xlink">3+</sup> (CLYC) is a promising new inorganic scintillator for gamma-ray spectroscopy and thermal neutron detection with the capability pulse-shape discrimination (PSD). We verify scintillation mechanisms responsible optical emission under gamma- neutron-induced excitation by...
This Letter of Intent has been submitted to the Scientific Committee INFN Laboratori Nazionali del Gran Sasso (LNGS) in March 2004. It describes a novel facility at LNGS study double beta decay 76Ge using an (optionally active) cryogenic fluid shield. The setup will allow scrutinize with high significance on short time scale current evidence for neutrinoless existing diodes from previous Heidelberg-Moscow and IGEX experiments. An increase lifetime limit can be achieved by adding more...
We developed two radiation mapping algorithms that can handle different situations based on prior information of the search area. The were in framework model-driven measurement, where a world model was used to drive measurement collection, and measurements update model.We experimentally tested robotic implementation Bayesian-based strategies dimensions, using commercially available desktop mobile robot fitted with CsI sensor. Our approach for implementing Bayesian over each segment area,...
Received 30 April 2012DOI:https://doi.org/10.1103/PhysRevLett.108.199902© 2012 American Physical Society
The Experiment for Space Radiation Analysis (ESRA) is the next in series of Demonstration and Validation (DemVal) projects Los Alamos National Laboratory (LANL) program will fly. ESRA mature technologies such as novel Wide-field-of-view Plasma Spectrometer (WPS) Energetic Charged Particle (ECP) telescope, along with high voltage power supply, a 3U Eurocard single board computers, flight software architecture, analog-to-digital electronics. WPS ECP sensors are intended to actively monitor...
SuperNEMO is a double-$\beta$ decay experiment, which will employ the successful tracker-calorimeter technique used in recently completed NEMO-3 experiment. implement 100 kg of isotope, reaching sensitivity to neutrinoless ($0\nu\beta\beta$) half-life order $10^{26}$ yr, corresponding Majorana neutrino mass 50-100 meV. One main goals and challenges detector development programme has been reach calorimeter energy resolution, $\Delta$E/E, around 3%/$sqrt(E)$(MeV) $\sigma$, or 7%/$sqrt(E)$(MeV)...
The BiPo-3 detector, running at the Canfranc Underground Laboratory (Laboratorio Subterr'aneo de Canfranc, LSC, Spain) since 2013, is a low-radioactivity detector dedicated to measuring ultra low natural radionuclide contaminations of 208Tl (232Th chain) and 214Bi (238U in thin materials. total sensitive surface area 3.6 m2. has been developed measure radiopurity selenium double β-decay source foils SuperNEMO experiment. In this paper design performance results background measurements...
The Gerda [1] and Majorana [2] projects, both searching for the neutrinoless double beta-decay of 76Ge, are developing a joint Monte-Carlo simulation framework called MaGe. Such an approach has many benefits: workload development general tools is shared between more experts, code tested in detail, experimental data made available validation.
Photofission is the process in which a nucleus disintegrates into two daughter products after absorbing photon. near threshold actinides very similar to spontaneous fission terms of number emitted decay neutrons and their energy distribution. Most are ~2 MeV range, can be efficiently detected with liquid scintillator detectors. Thus, Prompt Neutrons from (PNPF) used as an excellent tool for detection actinides. Since photofission cross section most fissionable materials drops zero incident...
We have built a detector capable of locating high Z objects in the sampling (middle) region detector. As atomic number increases, radiation length rapidly decreases, yielding larger variance scattering angle. Cosmic ray muon tomography works by tracking muons above region, and them below as well. The difference between two trajectories yield information, via variance, materials contained within region[1]. One most important aspects cosmic is minimizing exposure time. flux about 1/cm\^2/min,...
We demonstrate that with statistically accurate strategies the reliability, speed, and sensitivity of nuclear search can be significantly improved. offer two efficient for quick localization a weak radioactive source in large area. The comparison our simple uniform shows improvement average time by 5-10 times. show proposed reduce while keeping number both false negatives alarms under control.
Measurements of states excited by nuclear resonance fluorescence in $^{237}\mathrm{Np}$ were performed using a bremsstrahlung beam. Fifteen new observed the region 1.7 to 2.5 MeV. They can be used detect or assay nondestructively for applications security and safeguards. The are populated with similar strength as those found previously $^{235}\mathrm{U}$ $^{239}\mathrm{Pu}$ but spread out more energy.
This paper investigates applicability of thermodynamic concepts and principles to competitive systems. We show that Tsallis entropies are suitable for characterisation systems with transitive competition when mutations deviate from Gibbs mutations. Different types equilibrium in considered analysed. As rules become more intransitive, analogies eroded the behaviour system can complex. work analyses phenomenon punctuated evolution context risk/benefit dilemma.
A search for full energy depositions from bosonic keV-scale dark matter candidates of masses between 65 and 1021 keV has been performed with data collected during Phase II the GERmanium Detector Array (Gerda) experiment. Our analysis includes direct absorption as well Compton scattering. With a total exposure 105.5 kg years, no evidence signal above background observed. The resulting exclusion limits deduced either Bayesian or Frequentist statistics are most stringent constraints in major...
In this paper we build on, and extend our previous work on automated nuclear search, by taking the principle of a bidirectional interaction between perception sensor management to implementation level. algorithm that implement in hardware, model underlying physical process is used guide measurement, which then closes loop updating model. Realization "model-driven-measurement" concept leads working robotic prototype, capable confirming presence weak radiation sources at specified statistical...