Faculty Information - Kazuhide Okei

Present specialized field

Journal

Presentation

（Last updated : 2024-05-17 16:16:44）

Kazuhide Okei
Department Kawasaki Medical School Kawasaki Medical School, Department of Natural Sciences,

Position Assistant Professor

■ Present specialized field

Theoretical studies related to particle-, nuclear-, cosmic ray and astro-physics

■ Journal

1.	2024/04/03	The Excess-Path-Length Distribution of Electrons in Electromagnetic Cascade Showers
2.	2023/07/26	Excess-path-length distribution of shower electrons at radially distant points from the shower axis
3.	2023/07/26	Formulae to predict the excess-path-length distribution of cascade-shower electrons
4.	2023/07/26	Monte Carlo analyses of the shower-disc structure for gamma-ray shower
5.	2019/03	Characteristic energy-dissipating functions of muon penetrating through matters
6.	2019/03	Multiple Linsley method for EAS energy determination in LAAS
7.	2018/08	Survival probability of charged particles dissipating their energies by radiation and ionization
8.	2018/08	Update of the observation system for the primary energy spectrum with compact EAS arrays in LAAS experiment
9.	2017/06	The primary energy spectrum with Linsley method correcting heavy primary
10.	2015/12	Simultaneous distribution between the deflection angle and the lateral displacement under the Moliere theory of multiple scattering
11.	2015/08	Cosmic ray intensity variations in the 24th solar cycle observed by LAAS experiments
12.	2015/08	Simulation of electron trajectories in nuclear emulsion and its application
13.	2015/08	The primary energy spectrum derived from Linsley method with simulations of heavy compositions in the LAAS mini array observation
14.	2014/10	The joint distribution of the angular and lateral deflections due to multiple Coulomb scattering with ionization loss
15.	2014	An exact analytical derivation of energy spectra for high-energy cascade electron and photon in strong magnetic fields
16.	2014	Asymptotic properties of energy spectra for high-energy cascade electron and photon in strong magnetic fields
17.	2014	Electromagnetic showers in strong magnetic fields derived analytically assuming simplified cross-sections
18.	2013/09	Analytical derivation of higher-order terms of Moliere's series and accuracy of Moliere's angular distribution of fast charged particles
19.	2013	Measurement of the cosmic ray spectrum above 10¹⁶ eV energy regions with compact EAS arrays at LAAS
20.	2013	Parallel and simultaneous EASs at large distances due to Gerasimova-Zatsepin effects of cosmic ray heavy nuclei
21.	2012/10	Air Shower Simulation with EGS5
22.	2012/07	Contrast-enhanced ultrasonography with Sonazoid for the evaluation of bowel ischemia
23.	2011/10	Numerical calculation of the Goudsmit-Saunderson multiple scattering angular distribution 2: Comparison with the small angle approximation
24.	2011/09	Cosmic ray composition studies through the Gerasimova-Zatsepin effects of heavy nuclei at LAAS
25.	2011/09	Linsley's EAS time structure method for the primary cosmic ray spectrum at LAAS
26.	2011/08	Analytical investigations of electromagnetic cascades in photon gas
27.	2011/08	Searching for cosmic ray nuclei above the KNEE energies through the Gerasimova-Zatsepin effect with the LAAS experiments
28.	2011/08	The Anisotropy of Cosmic Ray Pursued with Chaos Analysis
29.	2011/08	The primary energy spectrum estimation by using Linsley's EAS time structure with a compact air shower array
30.	2010/11	Numerical calculation of the Goudsmit-Saunderson multiple scattering angular distribution
31.	2010/03	Simulation studies and implementation of Linsley's EAS time stucture method for the primary cosmic ray spectrum
32.	2010/02	Simultaneous and multiple EAS Events due to the Gerasimova-Zatsepin Effect with the LAAS Experiments
33.	2010/02	The energy spectrum of primary cosmic rays estimated by using the arrival time spread of air shower particles
34.	2010	Properties of the Moliere simultaneous distribution between the deflection angle and the lateral displacement
35.	2009/11	Charged particle transport calculation with GPU 2
36.	2009/07	Parallel and Simultaneous EAS events due to Gerasimova-Zatsepin effects observed by LAAS experiments
37.	2009/07	The energy spectrum of primary cosmic rays obtained by using arrival time spread of air shower particles
38.	2008/01	Energy spectrum of muon in EAS.
39.	2008/01	Muon components detected by EAS array and Okayama muon telescope experiments.
40.	2008/01	Nuclearites search with the TLS detector.
41.	2008/01	Primary energy spectrum of cosmic rays obtained by arrival time spread of particles in EAS.
42.	2008/01	The anisotropy of cosmic ray flux in Large Area Air Shower experiments.
43.	2008/01	The atmospheric muon flux and charge ratio using a magnet spectrometer.
44.	2008	Analytical properties of the Moli`ere simultaneous distribution between the deflection angle and the lateral displacement.
45.	2008	Charged particle transport calculation with GPU.
46.	2007/03	Numerical Fourier transforms applied to Molière's series function and error analyses with the Takahashi-Mori theory of error evaluation.
47.	2007	Accuracy of numerical functional transforms applied to derive Molière series terms and comparison with analytical results.
48.	2007	Analytical solutions of the Molière series terms of higher orders for multiple Coulomb scattering.
49.	2007	Derivation of the Molière simultaneous distribution between the deflection angle and the lateral displacement.
50.	2007	General solutions of Goldstein expansion and the Molière series function of higher orders.
51.	2007	Molière angular distribution expressed by Goldstein series and its applications.
52.	2007	Molière simultaneous distribution between the deflection angle and the spatial displacement.
53.	2007	Observation of cosmic ray anisotropy with Large Area Air Shower Experiments.
54.	2007	The chemical composition of primary cosmic raysin the energy range ～10¹⁵ eV from muon energy spectrum with the Okayama muon telescope.
55.	2007	The joint distribution of the angular and lateral deflections due to multiple Coulomb scattering.
56.	2007	Zenith angle distribution and atmospheric effect for EAS with LAAS experiments.
57.	2006/01	Analysis of Cosmic Ray Anisotropy around 10¹⁵ eV using Network Observation data of Air Showers.
58.	2006/01	Atmospheric Muon Measurements using the OKAYAMA Telescope.
59.	2006/01	Coincidence Observation between EAS array and Muon spectrometer.
60.	2006/01	Energy Spectrum of Cosmic Ray as derived from GPS-synchronized EAS array experiments.
61.	2006/01	Search for Nuclearites using TLS Detector at Sea Level.
62.	2006/01	Search for Simultaneous Parallel EAS Events in Long Baseline EAS Arrays with LAAS.
63.	2006	Comparison of multiple Coulomb scattering distributions: numerical calculation, Molière's theory and Monte Carlo sampling..
64.	2006	Molière's distributions derived from numerical functional transforms and the simultaneous distribution between the deflection angle and the spatial displacement.
65.	2005/06	The cross-section dividing method and the simultaneous distribution between the deflection angle and the spatial displacement for charged particles penetrating through matters.
66.	2005/06	Track tracing of charged particles with simultaneous distribution between the deflection angle and the spatial displacement.
67.	2005	1992-2004:search for neutrino burst from collapsing objects with LVD.
68.	2005	A Monte Carlo simulation of underground muon transport.
69.	2005	Estimation of EAS parameters from synchronized compact arrays within 1km baseline.
70.	2005	Goudsmit-Saunderson distribution with ionization described with Molière parameters.
71.	2005	Measurement of two-dimensional dose distribution by TL sheets for the clinical radiotherapy.
72.	2005	Molière angular and lateral distributions with ionization.
73.	2005	Molière lateral distribution with ionization for fast charged particles.
74.	2005	Momentum Spectrum of Muons Associated with Cosmic-Ray Air Shower at Sea Level.
75.	2005	Performance of GPS-synchronized EAS arrays in LAAS experiments.
76.	2005	Search for 10-1000 km range correlations of air showers in LAAS experiment.
77.	2005	Study of the muon-induced neutron background with the LVD detector
78.	2005	The Cosmic Ray Anisotropy Observed by the Large Area Air Shower Experiments.
79.	2005	The EAS time profile measurements in the Large Area Air Shower experiments.
80.	2005	The Observation System of EAS Muon Component with the EAS Array and the Muon Spectrometer.
81.	2004/02	A fast and accurate sampling of Molière distribution by dividing the scattering cross section.
82.	2004/02	The cross-section dividing method and a stchastic interpretation of the Molière expansion.
83.	2003	10 years search for neutrino bursts with LVD.
84.	2003	A high-accurate and high-efficient Monte Carlo code by improved Molière functions with ionization.
85.	2003	Analysis of the events recorded by the LVD neutrino detector from large solar flares during high solar activity.
86.	2003	Atmospheric muon measurements at sea level I: The detector.
87.	2003	Atmospheric muon measurements at sea level II: A maximum likelihood analysis.
88.	2003	Atmospheric muon measurements at sea level III: Muon flux.
89.	2003	Atmospheric muon measurements at sea level IV: Muon charge ratio.
90.	2003	Identification problems of muon and electron events in the Super-Kamiokande detector.
91.	2003	Measurement of Energy and Arrival Direction of Air Showers by Synchronized Compact Arrays.
92.	2003	Mechanism of Molière expansion for the angular distribution and improved Molière functions evaluated from the single-scattering splitting model.
93.	2003	Network observation of air showers as cosmic ray interferometer.
94.	2003	Nuclearite Search with the TL Stack Detector at Ground Level.
95.	2003	Observation of coincident air showers over a very large area.
96.	2003	Search for large-scale coincidences in network observation of cosmic ray air showers.
97.	2003	Search for large-scale coincidences of EAS in LAAS experiment.
98.	2003	The Cosmic Ray Intensity Correlation with the Sunspot Number in LAAS Experiments.
99.	2003	The meteorological effects of cosmic ray intensity at sea level observed at multiple EAS arrays in LAAS experiments.
100.	2003	The status and future prospect of the LAAS project.
101.	2001	Atmospheric muon measurements I:Vertical measurements
102.	2001	Atmospheric muon measurements II: Zenith angular dependence
103.	2001	Atmospheric muon measurements III:Azimuthal angular dependence
104.	1998	An altazimuthal countertelescope with a magnet spectrometer II : Measurements of muons at Sea level
105.	1998	Measurements of muons at sea level
106.	1997	Analyses of Muons from the Direction of Cygnus X-3 at Large Zenith Angles : 1992-1996
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■ Presentation

2022/03/16

Arrival time distribution of electron components in the gamma-induced shower predicted by the cascade shower theory （Speech，General）